JP5208537B2 - 不揮発性記憶素子 - Google Patents
不揮発性記憶素子 Download PDFInfo
- Publication number
- JP5208537B2 JP5208537B2 JP2008037893A JP2008037893A JP5208537B2 JP 5208537 B2 JP5208537 B2 JP 5208537B2 JP 2008037893 A JP2008037893 A JP 2008037893A JP 2008037893 A JP2008037893 A JP 2008037893A JP 5208537 B2 JP5208537 B2 JP 5208537B2
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- JP
- Japan
- Prior art keywords
- insulating film
- charge storage
- storage layer
- layer
- memory cell
- Prior art date
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/013—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator
- H10D64/01302—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon
- H10D64/01304—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H10D64/01306—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon
- H10D64/01308—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon the conductor further comprising a non-elemental silicon additional conductive layer, e.g. a metal silicide layer formed by the reaction of silicon with an implanted metal
- H10D64/0131—Manufacture or treatment of electrodes having a conductor capacitively coupled to a semiconductor by an insulator the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon the conductor further comprising a non-elemental silicon additional conductive layer, e.g. a metal silicide layer formed by the reaction of silicon with an implanted metal the additional conductive layer comprising a silicide layer formed by the silicidation reaction between the layer of silicon with a metal layer which is not formed by metal implantation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/0413—Manufacture or treatment of FETs having insulated gates [IGFET] of FETs having charge-trapping gate insulators, e.g. MNOS transistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/69—IGFETs having charge trapping gate insulators, e.g. MNOS transistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/69—IGFETs having charge trapping gate insulators, e.g. MNOS transistors
- H10D30/694—IGFETs having charge trapping gate insulators, e.g. MNOS transistors characterised by the shapes, relative sizes or dispositions of the gate electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/031—Manufacture or treatment of data-storage electrodes
- H10D64/037—Manufacture or treatment of data-storage electrodes comprising charge-trapping insulators
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/68—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator
- H10D64/681—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator having a compositional variation, e.g. multilayered
- H10D64/685—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator having a compositional variation, e.g. multilayered being perpendicular to the channel plane
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/68—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator
- H10D64/691—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator comprising metallic compounds, e.g. metal oxides or metal silicates
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- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
Description
図2は、本発明の第1の実施形態に係るメモリセルトランジスタ(不揮発性記憶素子)の構成を示す断面図である。
トンネル絶縁膜14としては、酸化シリコン(SiO2)、窒化シリコン(SiN)、酸窒化シリコン(SiON)、或いはそれらの積層膜を用いることができる。
第2の実施形態は、トンネル絶縁膜と結晶化した電荷蓄積層との界面に、非晶質の絶縁層を設けるようにしている。これにより、トンネル絶縁膜14へのダメージを低減することができるため、トンネル絶縁膜14の特性劣化を低減することができる。ひいては、メモリセルトランジスタの特性を向上させることができる。
第3の実施形態は、非晶質の絶縁層内に結晶化した粒状の高誘電率絶縁層を含むようにして電荷蓄積層を構成している。そして、結晶化した粒状の高誘電率絶縁層をブロック絶縁膜との界面に配置することで、電荷蓄積層とブロック絶縁膜との相互反応を抑制するようにしている。
Claims (3)
- 半導体領域と、
前記半導体領域内に互いに離間して設けられたソース領域及びドレイン領域と、
前記ソース領域及び前記ドレイン領域間の前記半導体領域上に設けられたトンネル絶縁膜と、
前記トンネル絶縁膜上に設けられ、かつ非晶質である第1の絶縁層と、前記第1の絶縁層内に粒状に形成されかつ結晶化した第2の絶縁層とを含む電荷蓄積層と、
前記電荷蓄積層上に設けられたブロック絶縁膜と、
前記ブロック絶縁膜上に設けられた制御ゲート電極と、
を具備し、
前記第2の絶縁層は、Hf、Al、Zr、Ti、及び希土類金属のうち少なくとも1つを含む、全部又は一部が結晶化した酸化物、窒化物、或いは酸窒化物を含み、
前記ブロック絶縁膜は、希土類金属のうち少なくとも1つを含む酸化物、酸窒化物、シリケート、或いはアルミネートを含むことを特徴とする不揮発性記憶素子。 - 前記第2の絶縁層は、前記ブロック絶縁膜との界面に設けられることを特徴とする請求項1に記載の不揮発性記憶素子。
- 前記第1の絶縁層は、窒化シリコンからなることを特徴とする請求項1又は2に記載の不揮発性記憶素子。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008037893A JP5208537B2 (ja) | 2008-02-19 | 2008-02-19 | 不揮発性記憶素子 |
| KR1020090013285A KR101150565B1 (ko) | 2008-02-19 | 2009-02-18 | 불휘발성 기억 소자 및 그 제조 방법 |
| US12/388,040 US20090206393A1 (en) | 2008-02-19 | 2009-02-18 | Nonvolatile memory element and method of manufacturing the same |
| CN2009100082265A CN101515600B (zh) | 2008-02-19 | 2009-02-19 | 非易失性存储元件及其制造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008037893A JP5208537B2 (ja) | 2008-02-19 | 2008-02-19 | 不揮発性記憶素子 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009200121A JP2009200121A (ja) | 2009-09-03 |
| JP5208537B2 true JP5208537B2 (ja) | 2013-06-12 |
Family
ID=40954295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008037893A Expired - Fee Related JP5208537B2 (ja) | 2008-02-19 | 2008-02-19 | 不揮発性記憶素子 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090206393A1 (ja) |
| JP (1) | JP5208537B2 (ja) |
| KR (1) | KR101150565B1 (ja) |
| CN (1) | CN101515600B (ja) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5279312B2 (ja) * | 2008-03-28 | 2013-09-04 | 株式会社東芝 | 半導体装置、及び半導体装置の製造方法 |
| JP4917085B2 (ja) * | 2008-12-15 | 2012-04-18 | 東京エレクトロン株式会社 | 半導体装置 |
| JP5336872B2 (ja) | 2009-02-06 | 2013-11-06 | 株式会社東芝 | 不揮発性半導体記憶装置及びその製造方法 |
| US8263458B2 (en) * | 2010-12-20 | 2012-09-11 | Spansion Llc | Process margin engineering in charge trapping field effect transistors |
| JP2012146750A (ja) * | 2011-01-07 | 2012-08-02 | Toshiba Corp | 半導体記憶装置およびその製造方法 |
| JP5462897B2 (ja) * | 2012-01-24 | 2014-04-02 | 東京エレクトロン株式会社 | 半導体装置の製造方法 |
| DE102012211460A1 (de) * | 2012-07-03 | 2014-01-09 | Robert Bosch Gmbh | Gassensor und Verfahren zum Herstellen eines solchen |
| US10344398B2 (en) * | 2015-01-08 | 2019-07-09 | Micron Technology, Inc. | Source material for electronic device applications |
| CN108257968A (zh) * | 2016-12-28 | 2018-07-06 | 上海新昇半导体科技有限公司 | 一种无结半导体沟道栅阵列存储器结构及其制备方法 |
| CN115632103A (zh) * | 2022-10-20 | 2023-01-20 | 珠海冠宇电池股份有限公司 | 正极片、电芯和电池 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001234468A1 (en) * | 2000-01-19 | 2001-07-31 | North Carolina State University | Lanthanum oxide-based gate dielectrics for integrated circuit field effect transistors and methods of fabricating same |
| US6984591B1 (en) * | 2000-04-20 | 2006-01-10 | International Business Machines Corporation | Precursor source mixtures |
| KR100597642B1 (ko) * | 2004-07-30 | 2006-07-05 | 삼성전자주식회사 | 비휘발성 메모리 소자 및 그 제조방법 |
| US7564108B2 (en) * | 2004-12-20 | 2009-07-21 | Taiwan Semiconductor Manufacturing Company, Ltd. | Nitrogen treatment to improve high-k gate dielectrics |
| KR100690911B1 (ko) * | 2005-07-18 | 2007-03-09 | 삼성전자주식회사 | 2비트 메모리 셀을 포함하는 비휘발성 반도체 집적 회로장치 및 그 제조 방법 |
| US7482651B2 (en) * | 2005-12-09 | 2009-01-27 | Micron Technology, Inc. | Enhanced multi-bit non-volatile memory device with resonant tunnel barrier |
| JP4719035B2 (ja) * | 2006-03-13 | 2011-07-06 | 株式会社東芝 | 不揮発性半導体メモリ装置及びその製造方法 |
| JP4866652B2 (ja) * | 2006-05-10 | 2012-02-01 | ルネサスエレクトロニクス株式会社 | 半導体記憶装置 |
| KR20080031594A (ko) * | 2006-10-04 | 2008-04-10 | 삼성전자주식회사 | 전하 트랩형 메모리 소자 |
| JP5060110B2 (ja) * | 2006-11-27 | 2012-10-31 | 株式会社東芝 | 不揮発性半導体メモリ装置及びその製造方法 |
| KR100786707B1 (ko) | 2006-12-21 | 2007-12-18 | 삼성전자주식회사 | 불휘발성 메모리 장치 및 이의 제조 방법 |
| KR100843229B1 (ko) * | 2007-01-11 | 2008-07-02 | 삼성전자주식회사 | 하이브리드 구조의 전하 트랩막을 포함하는 플래쉬 메모리소자 및 그 제조 방법 |
| KR20080082844A (ko) * | 2007-03-09 | 2008-09-12 | 삼성전자주식회사 | 전하 트랩형 메모리 소자 |
| KR20090041196A (ko) * | 2007-10-23 | 2009-04-28 | 삼성전자주식회사 | 비휘발성 메모리 소자, 그 제조 방법 및 시스템 |
| JP2009194311A (ja) * | 2008-02-18 | 2009-08-27 | Toshiba Corp | 不揮発性半導体メモリ装置およびその製造方法 |
-
2008
- 2008-02-19 JP JP2008037893A patent/JP5208537B2/ja not_active Expired - Fee Related
-
2009
- 2009-02-18 KR KR1020090013285A patent/KR101150565B1/ko not_active Expired - Fee Related
- 2009-02-18 US US12/388,040 patent/US20090206393A1/en not_active Abandoned
- 2009-02-19 CN CN2009100082265A patent/CN101515600B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009200121A (ja) | 2009-09-03 |
| KR101150565B1 (ko) | 2012-06-11 |
| US20090206393A1 (en) | 2009-08-20 |
| KR20090089803A (ko) | 2009-08-24 |
| CN101515600B (zh) | 2012-05-09 |
| CN101515600A (zh) | 2009-08-26 |
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