JP4338495B2 - シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 - Google Patents
シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 Download PDFInfo
- Publication number
- JP4338495B2 JP4338495B2 JP2003360192A JP2003360192A JP4338495B2 JP 4338495 B2 JP4338495 B2 JP 4338495B2 JP 2003360192 A JP2003360192 A JP 2003360192A JP 2003360192 A JP2003360192 A JP 2003360192A JP 4338495 B2 JP4338495 B2 JP 4338495B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- wiring
- dielectric constant
- sioc
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/074—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H10W20/077—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers on sidewalls or on top surfaces of conductors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/65—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials
- H10P14/6502—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials
- H10P14/6506—Formation of intermediate materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/65—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials
- H10P14/6502—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials
- H10P14/6512—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials by exposure to a gas or vapour
- H10P14/6514—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials by exposure to a gas or vapour by exposure to a plasma
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/65—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials
- H10P14/6516—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed after formation of the materials
- H10P14/6529—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed after formation of the materials by exposure to a gas or vapour
- H10P14/6532—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed after formation of the materials by exposure to a gas or vapour by exposure to a plasma
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/074—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H10W20/075—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers of multilayered thin functional dielectric layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/081—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts
- H10W20/084—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts for dual-damascene structures
- H10W20/085—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts for dual-damascene structures involving intermediate temporary filling with material
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/093—Manufacture or treatment of dielectric parts thereof by modifying materials of the dielectric parts
- H10W20/096—Manufacture or treatment of dielectric parts thereof by modifying materials of the dielectric parts by contacting with gases, liquids or plasmas
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/40—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes
- H10W20/45—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes characterised by their insulating parts
- H10W20/47—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes characterised by their insulating parts comprising two or more dielectric layers having different properties, e.g. different dielectric constants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/40—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes
- H10W20/495—Capacitive arrangements or effects of, or between wiring layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6328—Deposition from the gas or vapour phase
- H10P14/6334—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H10P14/6336—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/66—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials
- H10P14/668—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials
- H10P14/6681—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si
- H10P14/6682—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/66—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials
- H10P14/668—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials
- H10P14/6681—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si
- H10P14/6684—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound comprising silicon and oxygen
- H10P14/6686—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound comprising silicon and oxygen the compound being a molecule comprising at least one silicon-oxygen bond and the compound having hydrogen or an organic group attached to the silicon or oxygen, e.g. a siloxane
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/69—Inorganic materials
- H10P14/692—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
- H10P14/6921—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon
- H10P14/6922—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon the material containing Si, O and at least one of H, N, C, F or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/40—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes
- H10W20/41—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes characterised by their conductive parts
- H10W20/44—Conductive materials thereof
- H10W20/4403—Conductive materials thereof based on metals, e.g. alloys, metal silicides
- H10W20/4421—Conductive materials thereof based on metals, e.g. alloys, metal silicides the principal metal being copper
Landscapes
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Formation Of Insulating Films (AREA)
- Chemical Vapour Deposition (AREA)
Description
配線の低抵抗化のため、Al配線に代え、Cu配線が用いられるようになった。しかし、Cuより低い抵抗率を持つ配線材料を用いることは困難である。配線の低抵抗化が限界に近づくと、高速動作化のためには配線の寄生容量を減少させることが必要となる。なお、Cu配線を用いた場合、Cuの酸化防止、拡散防止等のため、Cu配線を覆って、SiNや、SiC等の拡散防止膜が用いられる。
低比誘電率材料は、一般的に、たとえばCuの拡散防止膜として形成された下地との密着性が低い。密着性が低い層間絶縁膜を用い、配線層数を増加すると、下地層との界面で膜剥がれが生じる。
本発明の他の目的は、半導体装置の多層配線に用いるのに適した誘電率の低い絶縁材料を提供することである。
本発明のさらに他の目的は、低誘電率の絶縁材料を用いた多層配線を有し、信頼性の高い半導体装置およびその製造方法を提供することである。
本発明の他の観点によれば、水素を含有するシリコンオキシカーバイドであって、水素含有量が30at%以下11at%以上、炭素含有量が15at%以上21at%以下であるシリコンオキシカーバイドが提供される。
ノベラス(Novellus)社より入手可能である気相成長のシリコンオキシカーバイド(登録商標CORAL)膜は、比誘電率が約2.9と低いが、SiC層等との密着性が弱く、硬度、弾性定数等の物理的強度が不足する傾向がある。
図1(B)は、酸素流量に対する硬度(hardness)及び弾性定数(modulus)の変化を示すグラフである。図中横軸が酸素流量を単位sccmで示し、縦軸が硬度を単位GPaで、弾性定数を単位GPaで示す。実線で結んだ測定点が硬度のデータであり、破線で結んだ測定点が弾性定数のデータである。なお、白丸は比較のためのCORALの硬度及び弾性定数を示す。CORALに対しては、横軸は意味を有さない(酸素流量は250sccmで固定)。
図1(C)は、酸素流量の変化に対する比誘電率の変化を示すグラフである。横軸が酸素流量をsccmで示し、縦軸が比誘電率を示す。図から明らかなように、酸素流量を減少させるに従って、比誘電率は減少している。酸素流量100sccmより上で、特に150sccmより上で、比誘電率の増加が著しい。比誘電率を低く抑えるためには酸素流量は150sccm(CO2ガスの流量の3%)以下、特に100sccm(CO2ガスの流量の2%)以下とするのが好ましい。
TORAL成膜時の酸素流量を、0〜50sccmと少量にした時、チャンバ内ソースガスは、O2組成が減少して、相対的にCO2組成が増大している。ソースガスのプラズマがCO2プラズマに近づくとも考えられる。TORAL膜がSiC膜と高い密着性を示すことは、CO2プラズマ処理したSiC層とその上に成膜したCORAL膜とが高い密着性を示すことと、符合するとも考えられる。酸素を含まず、CO2を含むガスのプラズマ、またはCO2流量に対し、酸素流量を低く制限したガスのプラズマが良好な結果を生じている。
図10は、使用したプラズマCVD装置の構成を概略的に示す。下電極50は、8インチウエハを6枚載置するサセプタを兼ねる。サセプタは、各ウエハを搬送する搬送機構を備えている。下電極50に対向するように、6つの上電極51a、51b、51c、51d、51e、51fが配置され、6組の平行平板電極を構成している。これらがステージS0−S5を構成する。
サンプル23、24は、チャンバ内圧力をさらに5.0torrと増加させ、下電極に与えるLF電力を200Wとした場合を示す。上電極に与えるHF電力は、1100W、1200Wとした。HF電力の増加と共に堆積速度は増加し、膜厚の不均一も増加するが、屈折率は徐々に低下している。
変形例として、シリコンオキシカーバイド層15、25として、厚さ350nmのSiOC−A層を用い、シリコンオキシカーバード層18、28として、厚さ550nmのSiOC−A層を用いた。SiOC−Aの成膜条件は、TMCTS流量1ml/min、CO2流量5000sccm、圧力3.5toor、HF電力300W,LF電力200Wである。この構成においても、400℃、30分間の熱処理を5回繰り返した結果、膜剥れは全くみられなかった。2層目配線層の容量は約180fF/mmであった。シリコンオキシカーバイド層をノベラス社のCORALで作成した場合、熱サイクル試験において下地SiC層との界面で剥れが生じた。
図6(A)に示すように、シリコン基板10の上に、上述の実施例同様PSGによる層間絶縁膜11、下層配線12を形成する。下層配線12表面を覆うように、エッチストッパ用のSiC層14を厚さ約50nm、ノベラス社の登録商標ESL3を用いて成膜する。
図6(B)に示すように、デュアルダマシン用凹部にTaN層、Cu層をスパッタリングし、その上にメッキCu層を形成し、CMPにより平坦化することにより、デュアルダマシン銅配線19を形成する。銅配線19を覆って、銅拡散防止層として、厚さ70nmのSiC層24をノベラス社のESL3を用いて成膜する。
400℃、30分間の熱処理を5回繰り返し、膜剥がれが生じるか否かを観察した。膜剥がれは全く見られなかった。
図7(A)、(B)は、本発明のさらに他の実施例による半導体集積回路装置の多層配線形成工程を示すシリコン基板の断面図である。前述の実施例同様、半導体基板10の表面上に、層間絶縁膜11、下層配線12を形成し、その表面をノベラス社の登録商標ESL3を用いた厚さ約70nmのSiC層14で覆う。このSiC層14表面をCO2プラズマで処理した。図10のCVD装置において、第1ステージS0でCO2プラズマ処理を行なった。処理条件は、CO2流量5000sccm、圧力4torr、RF電力200W、処理時間5秒であった。このCO2プラズマ処理は、SiC層14表面に親水化表面14xを形成すると考えられる。
図7(B)に示すように、デュアルダマシン用凹部表面上にTaN層、Cu層をそれぞれ約30nmスパッタリングで形成し、その表面上にCu層をメッキで成膜する。SiOC層18y表面上の不要の配線層をCMP等により除去することにより、デュアルダマシン銅配線19を完成する。銅配線19を覆って、銅拡散防止層として、厚さ70nmのSiC層24をノベラス社のESL3を用いて成膜する。
TORALに代え、他の新規SiOCを用いることもできる。1例として、上記構造においてSiOC層15,18をSiOC−Bで形成した。成膜条件は上述のものである。400℃、30分間の熱処理を5回繰り返した。膜剥がれは全く見られなかった。
図9は、多層配線構造を有する半導体集積回路装置の構成を概略的に示す。シリコン基板1の表面上には、シャロートレンチアイソレーションによる素子分離領域2が形成され、活性領域表面上にゲート電極3が形成され、MOSトランジスタ構造が作成される。ゲート電極3を埋め込むように、PSG層4が成膜され、Wプラグ5が埋め込まれる。さらにその表面に酸化シリコン層6が成膜され、ビア導電体7が埋め込まれる。
(付記2)(2) 前記炭素含有量が約25at%以下である付記1記載のシリコンオキシカーバイド。
(付記4)(3) 水素含有量が30at%以下であり、比誘電率が約3.1以下であるシリコンオキシカーバイド。
(付記6)(4) 下地を準備する工程と、
ソースガスとして、テトラメチルシクロテトラシロキサン、炭酸ガス、炭酸ガスの流量に対して3%以下の流量の酸素を用い、気相成長により、前記下地上にシリコンオキシカーバイド層を成長する工程と、
を含むシリコンオキシカーバイド層を成長する方法。
(付記8) 前記気相成長が、4toorより低い圧力で行われる付記6記載のシリコンオキシカーバイド層を成長する方法。
(付記10) 前記気相成長が、4toorより高い圧力で行われる付記6記載のシリコンオキシカーバイド層を成長する方法。
(付記12) 半導体基板と、半導体基板上方に形成された銅配線と、銅配線を覆うシリコンカーバイド層と、シリコンカーバイド層を覆い、水素を含み、炭素含有量が約18at%以上であり、比誘電率が約3.1以下である第1のシリコンオキシカーバイド層とを有する半導体装置。
(付記14) さらに、前記第1のシリコンオキシカーバイド層上に接して形成され、炭素含有量が第1のシリコンオキシカーバイド層より1at%以上低い第2のシリコンオキシカーバイド層を有する付記12記載の半導体装置。
半導体基板上方に形成された銅配線と、
銅配線を覆うシリコンカーバイド層と、シリコンカーバイド層を覆い、水素を含み、水素含有量が30at%以下であり、比誘電率が約3.1以下である第1のシリコンオキシカーバイド層と、
を有する半導体装置。
(付記18) さらに、前記第1のシリコンオキシカーバイド層上に接して形成され、水素含有量が第1のシリコンオキシカーバイド層より2at%以上高い第2のシリコンオキシカーバイド層を有する付記16記載の半導体装置。
半導体基板上方に形成された銅配線と、
銅配線を覆うシリコンカーバイド層と、シリコンカーバイド層を覆い、水素を含み、炭素含有量が17at%以上、または水素含有量が30at%以下であり、比誘電率が約3.1以下である第1のシリコンオキシカーバイド層と、
を有する半導体装置。
前記下地構造上に、ソースガスとして、テトラメチルシクロテトラシロキサン、炭酸ガス、炭酸ガスの流量に対して3%以下の流量の酸素を用い、気相成長でシリコンオキシカーバイド層を成長する工程と、
を含む半導体装置の製造方法。
N (付記24)(8) 前記酸素の流量が0%である付記23記載の半導体装置の製造方法。
N (付記25)(9) 前記シリコンオキシカーバイド層を成長する工程の後、続いてCO2プラズマで表面を軽く酸化する工程を含む付記23記載の半導体装置の製造方法。
(付記27) 半導体基板と、半導体基板上方に形成された銅配線と、銅配線を覆うシリコンカーバイド層とを有する下地構造を準備する工程と、
前記下地構造のシリコンカーバイド層表面を、O2より分子量が大きく、酸素を含む弱酸化性ガスのプラズマで親水化処理する工程と、
親水化処理したシリコンカーバイド層表面上に、酸化シリコンより比誘電率の小さい低誘電率絶縁層を形成する工程と、
を含む半導体装置の製造方法。
(付記29) 前記プラズマで処理する工程が、前記低誘電率絶縁層を形成する工程と同一チャンバ内で行われる付記27記載の半導体装置の製造方法。
12 下層配線
14、17 SiC層
15、18 SiOC(TORAL)層
ARC 反射防止膜
PR ホトレジスト
19 デュアルダマシン配線
21 SiC層
22 有機絶縁層
23 酸化シリコン層
24 SiC層
25 SiOC層
27 SiC層
28 SiOC層
29 デュアルダマシン配線
34 有機絶縁層
36 SiC層
37 有機絶縁層
38 酸化シリコン層
100 半導体基板
IL 層間絶縁膜
W 配線
HM ハードマスク(SiN層)
PD パッド
Claims (6)
- 水素を含有するシリコンオキシカーバイドであって、水素含有量が30at%以下20at%以上、炭素含有量が18at%以上21at%以下であり、比誘電率が3.1以下2.85以上であるシリコンオキシカーバイド。
- 水素を含有するシリコンオキシカーバイドであって、水素含有量が30at%以下11at%以上、炭素含有量が15at%以上21at%以下であるシリコンオキシカーバイド。
- 半導体基板と、
半導体基板上方に形成された銅配線と、
銅配線を覆うシリコンカーバイド層と、
シリコンカーバイド層を覆い、水素を含み、炭素含有量が18at%以上21at%以下、かつ水素含有量が30at%以下20at%以上であり、比誘電率が3.1以下2.85以上である第1のシリコンオキシカーバイド層と、
を有する半導体装置。 - 半導体基板と、半導体基板上方に形成された銅配線と、銅配線を覆うシリコンカーバイド層とを有する下地構造を準備する工程と、
前記下地構造上に、ソースガスとして、テトラメチルシクロテトラシロキサン、炭酸ガス、炭酸ガスの流量に対して3%以下の流量の酸素を用い、気相成長でシリコンオキシカーバイド層を成長する工程と、
を含む半導体装置の製造方法。 - 前記酸素の流量が0%である請求項4記載の半導体装置の製造方法。
- 前記シリコンオキシカーバイド層を成長する工程に続いて、CO2プラズマで表面を酸化する工程を含む請求項5記載の半導体装置の製造方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003360192A JP4338495B2 (ja) | 2002-10-30 | 2003-10-21 | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 |
| US10/694,826 US6949830B2 (en) | 2002-10-30 | 2003-10-29 | Silicon oxycarbide, growth method of silicon oxycarbide layer, semiconductor device and manufacture method for semiconductor device |
| US12/314,036 US8349722B2 (en) | 2002-10-30 | 2008-12-03 | Silicon oxycarbide, growth method of silicon oxycarbide layer, semiconductor device and manufacture method for semiconductor device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002315900 | 2002-10-30 | ||
| JP2003360192A JP4338495B2 (ja) | 2002-10-30 | 2003-10-21 | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007179347A Division JP4882893B2 (ja) | 2002-10-30 | 2007-07-09 | 半導体装置の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004172590A JP2004172590A (ja) | 2004-06-17 |
| JP4338495B2 true JP4338495B2 (ja) | 2009-10-07 |
Family
ID=32715809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003360192A Expired - Fee Related JP4338495B2 (ja) | 2002-10-30 | 2003-10-21 | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US6949830B2 (ja) |
| JP (1) | JP4338495B2 (ja) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627532B1 (en) * | 1998-02-11 | 2003-09-30 | Applied Materials, Inc. | Method of decreasing the K value in SiOC layer deposited by chemical vapor deposition |
| JP4338495B2 (ja) * | 2002-10-30 | 2009-10-07 | 富士通マイクロエレクトロニクス株式会社 | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 |
| US7485570B2 (en) * | 2002-10-30 | 2009-02-03 | Fujitsu Limited | Silicon oxycarbide, growth method of silicon oxycarbide layer, semiconductor device and manufacture method for semiconductor device |
| JP3778174B2 (ja) * | 2003-04-14 | 2006-05-24 | ソニー株式会社 | 半導体装置及びその製造方法 |
| US20050064629A1 (en) * | 2003-09-22 | 2005-03-24 | Chen-Hua Yu | Tungsten-copper interconnect and method for fabricating the same |
| US6949457B1 (en) * | 2004-01-21 | 2005-09-27 | Kla-Tencor Technologies Corporation | Barrier enhancement |
| JP4917249B2 (ja) * | 2004-02-03 | 2012-04-18 | ルネサスエレクトロニクス株式会社 | 半導体装置及び半導体装置の製造方法 |
| US7030041B2 (en) | 2004-03-15 | 2006-04-18 | Applied Materials Inc. | Adhesion improvement for low k dielectrics |
| US7112541B2 (en) * | 2004-05-06 | 2006-09-26 | Applied Materials, Inc. | In-situ oxide capping after CVD low k deposition |
| US7307346B2 (en) * | 2004-05-18 | 2007-12-11 | Infineon Technologies Ag | Final passivation scheme for integrated circuits |
| US7271093B2 (en) * | 2004-05-24 | 2007-09-18 | Asm Japan K.K. | Low-carbon-doped silicon oxide film and damascene structure using same |
| JP2006024598A (ja) * | 2004-07-06 | 2006-01-26 | Fujitsu Ltd | 半導体装置の製造方法 |
| WO2007001337A2 (en) * | 2004-08-18 | 2007-01-04 | Dow Corning Corporation | Coated substrates and methods for their preparation |
| EP1799877B2 (en) * | 2004-08-18 | 2016-04-20 | Dow Corning Corporation | Sioc:h coated substrates |
| US7166544B2 (en) * | 2004-09-01 | 2007-01-23 | Applied Materials, Inc. | Method to deposit functionally graded dielectric films via chemical vapor deposition using viscous precursors |
| US20060165913A1 (en) * | 2005-01-27 | 2006-07-27 | Bella Chen | Method of reducing number of particals on low-k material layer |
| US7851030B2 (en) * | 2005-01-27 | 2010-12-14 | United Microelectronics Corp. | Method of reducing number of particles on low-k material layer |
| CN100437934C (zh) * | 2005-02-08 | 2008-11-26 | 联华电子股份有限公司 | 减少低介电常数材料层的微粒数目的方法 |
| JP4489618B2 (ja) | 2005-03-14 | 2010-06-23 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
| US7189658B2 (en) * | 2005-05-04 | 2007-03-13 | Applied Materials, Inc. | Strengthening the interface between dielectric layers and barrier layers with an oxide layer of varying composition profile |
| KR100657166B1 (ko) * | 2005-08-30 | 2006-12-13 | 동부일렉트로닉스 주식회사 | 구리 금속 배선의 형성 방법 |
| JP4666308B2 (ja) * | 2006-02-24 | 2011-04-06 | 富士通セミコンダクター株式会社 | 半導体装置の製造方法 |
| US7847402B2 (en) * | 2007-02-20 | 2010-12-07 | International Business Machines Corporation | BEOL interconnect structures with improved resistance to stress |
| US20100116331A1 (en) * | 2007-03-29 | 2010-05-13 | Mitsubishi Heavy Industries, Ltd. | Photovoltaic device and process for producing same |
| JP4364258B2 (ja) * | 2007-05-15 | 2009-11-11 | 株式会社東芝 | 半導体装置及び半導体装置の製造方法 |
| JP5303938B2 (ja) | 2008-01-18 | 2013-10-02 | 富士通セミコンダクター株式会社 | 半導体装置とその製造方法 |
| US8178908B2 (en) * | 2008-05-07 | 2012-05-15 | International Business Machines Corporation | Electrical contact structure having multiple metal interconnect levels staggering one another |
| JP2010021388A (ja) * | 2008-07-11 | 2010-01-28 | Fujitsu Microelectronics Ltd | 半導体装置及びその製造方法 |
| JP5434127B2 (ja) | 2009-02-20 | 2014-03-05 | 富士通セミコンダクター株式会社 | 半導体装置とその製造方法 |
| JP5617219B2 (ja) * | 2009-10-29 | 2014-11-05 | 富士通セミコンダクター株式会社 | 半導体記憶装置及びその製造方法 |
| US8637123B2 (en) * | 2009-12-29 | 2014-01-28 | Lotus Applied Technology, Llc | Oxygen radical generation for radical-enhanced thin film deposition |
| US8415238B2 (en) | 2010-01-14 | 2013-04-09 | International Business Machines Corporation | Three dimensional integration and methods of through silicon via creation |
| US8399180B2 (en) * | 2010-01-14 | 2013-03-19 | International Business Machines Corporation | Three dimensional integration with through silicon vias having multiple diameters |
| US8629559B2 (en) | 2012-02-09 | 2014-01-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Stress reduction apparatus with an inverted cup-shaped layer |
| US10787591B2 (en) | 2012-04-30 | 2020-09-29 | The Boeing Company | Composites including silicon-oxy-carbide layers and methods of making the same |
| US8993446B2 (en) * | 2013-04-23 | 2015-03-31 | Globalfoundries Inc. | Method of forming a dielectric film |
| US10297442B2 (en) * | 2013-05-31 | 2019-05-21 | Lam Research Corporation | Remote plasma based deposition of graded or multi-layered silicon carbide film |
| TW201535513A (zh) * | 2014-02-18 | 2015-09-16 | 應用材料股份有限公司 | 介電常數減少且機械性質強化的低k介電層 |
| JP6711673B2 (ja) | 2016-04-06 | 2020-06-17 | キヤノン株式会社 | 光電変換装置、光電変換装置の製造方法及び撮像システム |
| US9704994B1 (en) | 2016-10-10 | 2017-07-11 | International Business Machines Corporation | Different shallow trench isolation fill in fin and non-fin regions of finFET |
| US12087692B2 (en) * | 2017-09-28 | 2024-09-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | Hardened interlayer dielectric layer |
Family Cites Families (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06103691B2 (ja) | 1989-02-20 | 1994-12-14 | 松下電器産業株式会社 | 薄膜の形成方法 |
| US6593247B1 (en) | 1998-02-11 | 2003-07-15 | Applied Materials, Inc. | Method of depositing low k films using an oxidizing plasma |
| US6660656B2 (en) * | 1998-02-11 | 2003-12-09 | Applied Materials Inc. | Plasma processes for depositing low dielectric constant films |
| US6303523B2 (en) * | 1998-02-11 | 2001-10-16 | Applied Materials, Inc. | Plasma processes for depositing low dielectric constant films |
| US6667553B2 (en) | 1998-05-29 | 2003-12-23 | Dow Corning Corporation | H:SiOC coated substrates |
| US6159871A (en) * | 1998-05-29 | 2000-12-12 | Dow Corning Corporation | Method for producing hydrogenated silicon oxycarbide films having low dielectric constant |
| US6800571B2 (en) * | 1998-09-29 | 2004-10-05 | Applied Materials Inc. | CVD plasma assisted low dielectric constant films |
| US6821571B2 (en) | 1999-06-18 | 2004-11-23 | Applied Materials Inc. | Plasma treatment to enhance adhesion and to minimize oxidation of carbon-containing layers |
| JP2001196367A (ja) | 2000-01-12 | 2001-07-19 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
| US6541367B1 (en) * | 2000-01-18 | 2003-04-01 | Applied Materials, Inc. | Very low dielectric constant plasma-enhanced CVD films |
| US6441491B1 (en) * | 2000-10-25 | 2002-08-27 | International Business Machines Corporation | Ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device and electronic device containing the same |
| US6790789B2 (en) * | 2000-10-25 | 2004-09-14 | International Business Machines Corporation | Ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device and electronic device made |
| EP1352107A2 (en) * | 2000-10-25 | 2003-10-15 | International Business Machines Corporation | An ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device, a method for fabricating the same, and an electronic device containing the same |
| US6756323B2 (en) * | 2001-01-25 | 2004-06-29 | International Business Machines Corporation | Method for fabricating an ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device |
| US6768200B2 (en) * | 2000-10-25 | 2004-07-27 | International Business Machines Corporation | Ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device |
| JP3545364B2 (ja) | 2000-12-19 | 2004-07-21 | キヤノン販売株式会社 | 半導体装置及びその製造方法 |
| JP2002203899A (ja) | 2000-12-28 | 2002-07-19 | Matsushita Electric Ind Co Ltd | 銅相互接続構造の形成方法 |
| US6583048B2 (en) * | 2001-01-17 | 2003-06-24 | Air Products And Chemicals, Inc. | Organosilicon precursors for interlayer dielectric films with low dielectric constants |
| SG98468A1 (en) | 2001-01-17 | 2003-09-19 | Air Prod & Chem | Organosilicon precursors for interlayer dielectric films with low dielectric constants |
| JP2002270689A (ja) | 2001-03-13 | 2002-09-20 | Hitachi Ltd | 半導体装置の製造方法 |
| US6777171B2 (en) * | 2001-04-20 | 2004-08-17 | Applied Materials, Inc. | Fluorine-containing layers for damascene structures |
| JP2003124307A (ja) | 2001-10-15 | 2003-04-25 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
| JP4152619B2 (ja) * | 2001-11-14 | 2008-09-17 | 株式会社ルネサステクノロジ | 半導体装置およびその製造方法 |
| US6838393B2 (en) * | 2001-12-14 | 2005-01-04 | Applied Materials, Inc. | Method for producing semiconductor including forming a layer containing at least silicon carbide and forming a second layer containing at least silicon oxygen carbide |
| US6734096B2 (en) | 2002-01-17 | 2004-05-11 | International Business Machines Corporation | Fine-pitch device lithography using a sacrificial hardmask |
| JP2003303885A (ja) * | 2002-04-08 | 2003-10-24 | Mitsubishi Electric Corp | 集積回路及びその設計方法 |
| JP3775354B2 (ja) | 2002-06-20 | 2006-05-17 | 松下電器産業株式会社 | 半導体装置およびその製造方法 |
| US6927178B2 (en) * | 2002-07-11 | 2005-08-09 | Applied Materials, Inc. | Nitrogen-free dielectric anti-reflective coating and hardmask |
| US7485570B2 (en) * | 2002-10-30 | 2009-02-03 | Fujitsu Limited | Silicon oxycarbide, growth method of silicon oxycarbide layer, semiconductor device and manufacture method for semiconductor device |
| JP4338495B2 (ja) * | 2002-10-30 | 2009-10-07 | 富士通マイクロエレクトロニクス株式会社 | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 |
| US7030468B2 (en) * | 2004-01-16 | 2006-04-18 | International Business Machines Corporation | Low k and ultra low k SiCOH dielectric films and methods to form the same |
| US7088003B2 (en) * | 2004-02-19 | 2006-08-08 | International Business Machines Corporation | Structures and methods for integration of ultralow-k dielectrics with improved reliability |
| US7049247B2 (en) * | 2004-05-03 | 2006-05-23 | International Business Machines Corporation | Method for fabricating an ultralow dielectric constant material as an intralevel or interlevel dielectric in a semiconductor device and electronic device made |
| US7223670B2 (en) * | 2004-08-20 | 2007-05-29 | International Business Machines Corporation | DUV laser annealing and stabilization of SiCOH films |
| JP4489618B2 (ja) * | 2005-03-14 | 2010-06-23 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
| US20090104541A1 (en) * | 2007-10-23 | 2009-04-23 | Eui Kyoon Kim | Plasma surface treatment to prevent pattern collapse in immersion lithography |
-
2003
- 2003-10-21 JP JP2003360192A patent/JP4338495B2/ja not_active Expired - Fee Related
- 2003-10-29 US US10/694,826 patent/US6949830B2/en not_active Expired - Lifetime
-
2008
- 2008-12-03 US US12/314,036 patent/US8349722B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004172590A (ja) | 2004-06-17 |
| US20090093130A1 (en) | 2009-04-09 |
| US6949830B2 (en) | 2005-09-27 |
| US8349722B2 (en) | 2013-01-08 |
| US20040155340A1 (en) | 2004-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4338495B2 (ja) | シリコンオキシカーバイド、半導体装置、および半導体装置の製造方法 | |
| US8778814B2 (en) | Silicon oxycarbide, growth method of silicon oxycarbide layer, semiconductor device and manufacture method for semiconductor device | |
| JP4090740B2 (ja) | 集積回路の作製方法および集積回路 | |
| CN1518075B (zh) | 有机绝缘膜、其制造方法、使用该有机绝缘膜的半导体器件及其制造方法 | |
| US7193325B2 (en) | Reliability improvement of SiOC etch with trimethylsilane gas passivation in Cu damascene interconnects | |
| TWI402887B (zh) | 用以整合具有改良可靠度之超低k介電質之結構與方法 | |
| JP5006428B2 (ja) | 窒素含有前駆物質を用いる誘電体バリアの堆積 | |
| US7960279B2 (en) | Semiconductor device and manufacturing method therefor | |
| US7888741B2 (en) | Structures with improved interfacial strength of SiCOH dielectrics and method for preparing the same | |
| JP4938222B2 (ja) | 半導体装置 | |
| JP2004235548A (ja) | 半導体装置およびその製造方法 | |
| JP4882893B2 (ja) | 半導体装置の製造方法 | |
| TWI286814B (en) | Fabrication process of a semiconductor device | |
| CN100485920C (zh) | 具有双层硅碳化合物阻挡层的集成电路 | |
| US20050287787A1 (en) | Porous ceramic materials as low-k films in semiconductor devices | |
| JP3843275B2 (ja) | 半導体装置の製造方法 | |
| US6806182B2 (en) | Method for eliminating via resistance shift in organic ILD |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050413 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20051129 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061226 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070226 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070508 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070706 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070709 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070911 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20080729 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20090630 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4338495 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120710 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120710 Year of fee payment: 3 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120710 Year of fee payment: 3 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120710 Year of fee payment: 3 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120710 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130710 Year of fee payment: 4 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |