JPH0629418B2 - Fluorescent body - Google Patents
Fluorescent bodyInfo
- Publication number
- JPH0629418B2 JPH0629418B2 JP9724385A JP9724385A JPH0629418B2 JP H0629418 B2 JPH0629418 B2 JP H0629418B2 JP 9724385 A JP9724385 A JP 9724385A JP 9724385 A JP9724385 A JP 9724385A JP H0629418 B2 JPH0629418 B2 JP H0629418B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- mol
- oxide
- europium
- gadolinium oxide
- 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 - Lifetime
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 43
- 229910052693 Europium Inorganic materials 0.000 claims description 14
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- DXNVUKXMTZHOTP-UHFFFAOYSA-N dialuminum;dimagnesium;barium(2+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Mg+2].[Mg+2].[Al+3].[Al+3].[Ba+2].[Ba+2] DXNVUKXMTZHOTP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 229910052788 barium Inorganic materials 0.000 claims description 3
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 16
- 229910001938 gadolinium oxide Inorganic materials 0.000 description 15
- 229940075613 gadolinium oxide Drugs 0.000 description 15
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 12
- 239000000395 magnesium oxide Substances 0.000 description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 229910001940 europium oxide Inorganic materials 0.000 description 5
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 150000004820 halides Chemical class 0.000 description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 3
- 229910016569 AlF 3 Inorganic materials 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- -1 europium-activated barium magnesium aluminate Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000004645 aluminates Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は螢光体、詳しくは２価のユーロピウムで付活さ
れたアルミン酸塩螢光体の改良に関する。FIELD OF THE INVENTION This invention relates to phosphors, and more particularly to improvements in divalent europium-activated aluminate phosphors.
従来の技術 従来、２価のユーロピウムで付活されたアルミン酸塩螢
光体としては、特公昭５２−２２８３６号公報に記載さ
れているように、例えばＢａ０．９Ｅｕ０．１Ｍｇ２Ａ
ｌ１６Ｏ２７なる化学組成で表わされる２価のユーロピ
ウムで付活された一連のバリウム・マグネシウムアルミ
ネート螢光体が知られている。2. Description of the Related Art Conventionally, as an aluminate phosphor activated with divalent europium, for example, Ba 0.9 Eu 0.1 Mg 2 A as described in Japanese Patent Publication No. 52-22836.
A series of divalent europium-activated barium magnesium aluminate phosphors having the chemical composition l 16 O 27 are known.
発明が解決しようとする問題点 このような従来の２価のユーロピウムで付活されたバリ
ウムマグネシウムアルミネート螢光体は、紫外線励起に
対して高効率の青色発光を示す螢光体であり、近年商品
化されたいわゆる３波長形螢光ランプの青色成分として
多用されている。しかしながら、この３波長形螢光ラン
プに使用する場合、同時に用いられる緑色螢光体例えば
セリウムテルビウム付活アルミン酸マグネシウムや、赤
色螢光体例えば３価のユーロピウム付活酸化イットリウ
ムに比べて上記２価のユーロピウムで付活されたバリウ
ムマグネシウムアルミネート螢光体の螢光ランプ寿命中
における劣化が大きいために、この螢光体を青色成分と
して用いた３波長形螢光ランプでは寿命中のランプ光色
の変化が大きいという問題があった。Problems to be Solved by the Invention Such conventional barium magnesium aluminate phosphors activated with divalent europium are phosphors that exhibit highly efficient blue light emission upon excitation with ultraviolet rays, and have recently been developed. It is often used as a blue component in so-called three-wavelength fluorescent lamps that have been commercialized. However, when used in this three-wavelength type fluorescent lamp, the above-mentioned divalent divalent oxide is used in comparison with the green fluorescent substance such as cerium terbium activated magnesium aluminate and the red fluorescent substance such as trivalent europium activated yttrium oxide which are simultaneously used. Since the deterioration of the europium-activated barium magnesium aluminate phosphor during the life of the fluorescent lamp is large, the three-wavelength fluorescent lamp using this phosphor as the blue component causes the lamp color to change during the life of the lamp. There was a problem that there was a big change.
本発明はこのような問題点を解決するもので、従来知ら
れている２価のユーロピウムで付活されたバリウムマグ
ネシウムアルミネート螢光体の螢光ランプ製造工程にお
ける熱処理に対する安定化をはかるとともに螢光ランプ
等に他の螢光体とともに用いられた場合においても劣化
の小さい螢光体を提供することを目的とするものであ
る。The present invention solves such a problem, and aims to stabilize the conventionally known divalent europium-activated barium magnesium aluminate phosphor against heat treatment in the fluorescent lamp manufacturing process, and to improve the stability. It is an object of the present invention to provide a phosphor that is less deteriorated even when it is used together with another phosphor in a light lamp or the like.
問題点を解決するための手段 この問題点を解決するために発明者らは、２価のユーロ
ピウムで付活されたバリウムマグネシウムアルミネート
螢光体について詳細な実験を行った結果、この螢光体に
さらに少量の酸化ガドリニウムを固溶させることによっ
て、発光強度の低下を伴うことなく熱劣化を改良するこ
とができることを見出した。Means for Solving the Problems In order to solve this problem, the inventors conducted detailed experiments on a barium magnesium aluminate phosphor activated with divalent europium, and as a result, the phosphor was found. It has been found that by further dissolving a small amount of gadolinium oxide as a solid solution, it is possible to improve thermal deterioration without lowering the emission intensity.
すなわち、発明者らの実験によれば、２価のユーロピウ
ムで付活されたバリウムマグネシウムアルミネート螢光
体において、その化学組成が一般式 （Ｂａ，Ｅｕ）Ｏ・ｘＭｇＯ・ｙＧｄ２Ｏ３・ｚＡｌ２
Ｏ３ で表わされるものとし、上記組成式のｘ，ｙおよびｚの
範囲がそれぞれ ０．８≦ｘ≦３．０ ０＜ｙ≦０．０５ ４≦ｚ≦８ の場合に、紫外線励起による高効率の発光を維持しなが
ら改良された熱劣化特性が得られることが認められたも
のである。That is, according to our experiments, a divalent europium in activated barium magnesium aluminate phosphor, its chemical composition formula (Ba, Eu) O · xMgO · yGd 2 O 3 · zAl Two
O 3 and the ranges of x, y and z in the above composition formula are 0.8 ≦ x ≦ 3.0 0 <y ≦ 0.05 4 ≦ z ≦ 8, respectively. It has been found that improved thermal degradation properties are obtained while maintaining efficient emission.
作用 この構成により、酸化ガドリニウムが螢光体中に少量固
溶することとなり、螢光体結晶の安定化がはかられるた
めに、発光強度の低下を伴うこともなく、かつ螢光ラン
プ等に使用した場合にも劣化の小さい特性が得られるこ
ととなる。Action With this configuration, a small amount of gadolinium oxide is solid-solved in the phosphor, and the phosphor crystal is stabilized, so that there is no reduction in emission intensity and it is used in fluorescent lamps. Even when it is used, it is possible to obtain a characteristic with little deterioration.
実施例 本発明の螢光体において、酸化ガドリニウム添加による
螢光体の熱劣化の改良は、その添加量(y)が特許請求の
範囲に示した０．０５を越えた領域についても認められ
たが、螢光体の紫外線励起による発光強度の低下を伴う
ため実用上の制限となった。すなわち、第１図は本発明
の螢光体における酸化ガドリニウム添加量(y)の変化に
対する相対輝度の変化を示したものであり、０＜ｙ≦
０．０５の範囲で良好な結果が得られることを示してい
る。また、第２図は酸化ガドリニウムの添加によるこの
螢光体の温度特性の改良効果を示す図である。第２図中
の曲線１は本発明の実施例１に示した螢光体である（Ｂ
ａ０．９，Ｅｕ０．１）Ｏ・２ＭｇＯ・０．０３Ｇｄ２
Ｏ３・７Ａｌ２Ｏ３の２５４ｎｍ紫外線励起による温度
特性曲線であり、曲線２は酸化ガドリニウムを添加して
いない従来の螢光体である（Ｂａ０．９，Ｅｕ０．１）
Ｏ・２ＭｇＯ・７Ａｌ２Ｏ３の２５４ｎｍ紫外線励起に
よる温度特性曲線である。In the phosphor of the present invention, the improvement of the thermal deterioration of the phosphor due to the addition of gadolinium oxide was also observed in the region where the addition amount (y) exceeded 0.05 shown in the claims. However, this is a practical limitation because it is accompanied by a decrease in emission intensity due to the excitation of the phosphor by ultraviolet light. That is, FIG. 1 shows changes in relative luminance with respect to changes in the amount of gadolinium oxide added (y) in the phosphor of the present invention, where 0 <y ≦
It is shown that good results are obtained in the range of 0.05. FIG. 2 is a graph showing the effect of improving the temperature characteristics of this phosphor by adding gadolinium oxide. Curve 1 in FIG. 2 is the phosphor shown in Example 1 of the present invention (B
a 0.9 , Eu 0.1 ) O.2MgO.0.03Gd 2
FIG. 3 is a temperature characteristic curve of O 3.7 Al 2 O 3 excited by 254 nm ultraviolet light, and a curve 2 is a conventional phosphor to which gadolinium oxide is not added (Ba 0.9 , Eu 0.1 ).
3 is a temperature characteristic curve of O · 2MgO · 7Al 2 O 3 excited by 254 nm ultraviolet light.
第２図から明らかなように、本発明の螢光体は従来のも
のに比べて温度特性が改良されており、螢光ランプに使
用する場合、その製造工程中における熱処理に対して安
定であるとともに、螢光ランプ寿命中における劣化に対
しても小さくすることが出来たものである。さらに、本
発明にかかる螢光体の場合、そのＡｌ２Ｏ３量ｚが４＞
ｚまたは８＜ｚの領域においては従来と同様に発光強度
の著しい低下があり実用的ではないことが認められた。
また、ＭｇＯ量ｘについても同様な理由により０．８＞
ｘまたは３＜ｘの領域において良好な螢光体は得られな
かった。As is clear from FIG. 2, the fluorescent substance of the present invention has improved temperature characteristics as compared with the conventional one, and when used in a fluorescent lamp, it is stable against heat treatment during its manufacturing process. At the same time, it was possible to reduce the deterioration during the life of the fluorescent lamp. Further, in the case of the phosphor according to the present invention, the Al 2 O 3 amount z is 4>
It was confirmed that in the region of z or 8 <z, the emission intensity was remarkably reduced as in the conventional case and it was not practical.
Further, the MgO amount x is 0.8> for the same reason.
No good phosphors were obtained in the region of x or 3 <x.
本発明にかかる螢光体は次に述べる製造方法によって得
られる。The phosphor according to the present invention is obtained by the manufacturing method described below.
まず、螢光体原料としては (1) 酸化ガドリニウム（Ｇｄ２Ｏ３）または硝酸塩，
炭酸塩，ハロゲン化物等の高温で容易にＧｄ２Ｏ３に変
化し得る化合物。First, as the fluorescent material, (1) gadolinium oxide (Gd 2 O 3 ) or nitrate,
Compounds such as carbonates and halides that can be easily converted to Gd 2 O 3 at high temperature.
(2) 酸化バリウム（ＢａＯ）または硝酸塩，炭酸塩，
ハロゲン化物等の高温で容易にＢａＯに変化し得る化合
物。(2) Barium oxide (BaO) or nitrate, carbonate,
Compounds such as halides that can easily be converted to BaO at high temperatures.
(3) 酸化マグネシウム（ＭｇＯ）または硝酸塩，炭酸
塩，ハロゲン化物等の高温で容易にＭｇＯに変化し得る
化合物。(3) Compounds such as magnesium oxide (MgO) or nitrates, carbonates, halides, etc. that can be easily converted to MgO at high temperature.
(4) 酸化アルミニウム（Ａｌ２Ｏ３）または硝酸塩，
水酸化物，ハロゲン化物等の高温で容易にＡｌ２Ｏ３に
変化し得る化合物。(4) Aluminum oxide (Al 2 O 3 ) or nitrate,
Compounds such as hydroxides and halides that can easily be converted to Al 2 O 3 at high temperatures.
(5) 酸化ユーロピウム（Ｅｕ２Ｏ３）または硝酸塩，
炭酸塩，ハロゲン化物等の高温で容易にＥｕ２Ｏ３に変
化し得る化合物。(5) Europium oxide (Eu 2 O 3 ) or nitrate,
Compounds such as carbonates and halides that can be easily converted to Eu 2 O 3 at high temperature.
が用いられる。上記原料を秤量し、ボールミルにて十分
に粉砕混合する。これをアルミナ坩堝等に充填し、還元
性気流中において１１００℃〜１６００℃の温度で数時
間焼成することによって螢光体を得る。Is used. The above raw materials are weighed and sufficiently crushed and mixed by a ball mill. This is filled in an alumina crucible or the like and baked in a reducing gas stream at a temperature of 1100 ° C. to 1600 ° C. for several hours to obtain a phosphor.
以下、本発明の実施例について述べる。Examples of the present invention will be described below.
実施例１ Ｇｄ２Ｏ３（酸化ガドリニウム） ０．０３モル ＢａＣＯ３（炭酸バリウム） ０．９０モル ＭｇＯ（酸化マグネシウム） ２．００モル Ａｌ２Ｏ３（酸化アルミニウム） ６．７２モル Ｅｕ２Ｏ３（酸化ユーロピウム） ０．０５モル ＡｌＦ３（フッ化アルミニウム） ０．５６モル 上記原料をボールミルにて十分に粉砕混合し、還元気流
中において１１００℃〜１６００℃の温度で数時間焼成
し螢光体を得た。Example 1 Gd 2 O 3 (gadolinium oxide) 0.03 mol BaCO 3 (barium carbonate) 0.90 mol MgO (magnesium oxide) 2.00 mol Al 2 O 3 (aluminum oxide) 6.72 mol Eu 2 O 3 (Europium oxide) 0.05 mol AlF 3 (aluminum fluoride) 0.56 mol The above raw materials were sufficiently pulverized and mixed in a ball mill, and calcined at a temperature of 1100 ° C. to 1600 ° C. for several hours in a reducing gas stream to give a phosphor. Got
得られた螢光体の組成式は次のとおりである。The composition formula of the obtained phosphor is as follows.
（Ｂａ０．９，Ｅｕ０．１）Ｏ・２ＭｇＯ・０．０３Ｇｄ２Ｏ３・７Ａｌ２Ｏ３ この螢光体の紫外線励起による相対輝度は酸化ガドリニ
ウムを含まない従来の螢光体 （Ｂａ０．９，Ｅｕ０．１）Ｏ・２ＭｇＯ・７Ａｌ２Ｏ
３に比べて１０２％と向上が認められるとともに、先に
も第２図で示したように温度特性も改良されていた。 (Ba 0.9, Eu 0.1) O · 2MgO · 0.03Gd 2 O 3 · 7Al 2 O 3 relative luminance by ultraviolet excitation of the phosphors conventional phosphor not containing gadolinium oxide (Ba 0 .9 , Eu 0.1 ) O · 2MgO · 7Al 2 O
An improvement of 102% was observed in comparison with that of No. 3, and the temperature characteristics were also improved as previously shown in FIG.
実施例２ Ｇｄ２Ｏ３（酸化ガドリニウム） ０．０１モル ＢａＣＯ３（炭酸バリウム） ０．９７モル ＭｇＯ（酸化マグネシウム） ０．９０モル ＭｇＦ２（フッ化マグネシウム） ０．１０モル Ａｌ２Ｏ３（酸化アルミニウム） ７．８４モル Ｅｕ２Ｏ３（酸化ユーロピウム） ０．０１５モル ＡｌＦ３（フッ化アルミニウム） ０．３２モル 上記原料を用い、実施例１と同様にして螢光体を得た。
得られた螢光体の組成式は次のとおりである。Example 2 Gd 2 O 3 (gadolinium oxide) 0.01 mol BaCO 3 (barium carbonate) 0.97 mol MgO (magnesium oxide) 0.90 mol MgF 2 (magnesium fluoride) 0.10 mol Al 2 O 3 ( Aluminum oxide) 7.84 mol Eu 2 O 3 (europium oxide) 0.015 mol AlF 3 (aluminum fluoride) 0.32 mol Using the above raw materials, a phosphor was obtained in the same manner as in Example 1.
The composition formula of the obtained phosphor is as follows.
（Ｂａ０．９７，Ｅｕ０．０３）Ｏ・ＭｇＯ・０．０１Ｇｄ２Ｏ３・８Ａｌ２Ｏ
３ この螢光体の紫外線励起による相対輝度は酸化ガドリニ
ウムを含まない従来の螢光体 （Ｂａ０．９７，Ｅｕ０．０３）Ｏ・ＭｇＯ・８Ａｌ２
Ｏ３ に比べて１０１％とわずかな向上が認められるとともに
温度特性の改良が得られた。(Ba 0.97 , Eu 0.03 ) O.MgO.0.01Gd 2 O 3 .8Al 2 O
3 The relative brightness of this phosphor due to the excitation of ultraviolet light is the conventional phosphor (Ba 0.97 , Eu 0.03 ) O.MgO.8Al 2 containing no gadolinium oxide.
A slight improvement of 101% was observed as compared with O 3 , and the temperature characteristics were improved.
実施例３ Ｇｄ２Ｏ３（酸化ガドリニウム） ０．０５モル ＢａＣＯ３（炭酸バリウム） ０．８０モル ＭｇＦ２（フッ化マグネシウム） ２．５０モル Ａｌ２Ｏ３（酸化アルミニウム） ３．９２モル Ｅｕ２Ｏ３（酸化ユーロピウム） ０．１０モル ＡｌＦ３（フッ化アルミニウム） ０．１６モル 上記原料を用い、実施例１と同様にして螢光体を得た。
得られた螢光体の組成式は次のとおりである。Example 3 Gd 2 O 3 (gadolinium oxide) 0.05 mol BaCO 3 (barium carbonate) 0.80 mol MgF 2 (magnesium fluoride) 2.50 mol Al 2 O 3 (aluminum oxide) 3.92 mol Eu 2 O 3 (europium oxide) 0.10 mol AlF 3 (aluminum fluoride) 0.16 mol Using the above raw materials, a phosphor was obtained in the same manner as in Example 1.
The composition formula of the obtained phosphor is as follows.
（Ｂａ０．８，Ｅｕ０．２）Ｏ・２．５ＭｇＯ・０．０５Ｇｄ２Ｏ３・４Ａｌ２
Ｏ３ この螢光体の紫外線励起による相対輝度は酸化ガドリニ
ウムを含まない従来の螢光体 （Ｂａ０．８，Ｅｕ０．２）Ｏ・２．５ＭｇＯ・４Ａｌ
２Ｏ３に比べて１０４％と向上が認められるとともに温
度特性の改良が得られた。(Ba 0.8 , Eu 0.2 ) O · 2.5MgO · 0.05Gd 2 O 3 / 4Al 2
O 3 The relative brightness of this phosphor due to UV excitation is that of a conventional phosphor containing no gadolinium oxide (Ba 0.8 , Eu 0.2 ) O · 2.5MgO · 4Al.
An improvement of 104% was observed as compared with 2 O 3 , and an improvement in temperature characteristics was obtained.
実施例４ Ｇｄ２Ｏ３（酸化ガドリニウム） ０．００２５モル ＢａＣＯ３（炭酸バリウム） ０．７２モル ＭｇＯ（酸化マグネシウム） １．４０モル Ａｌ２Ｏ３（酸化アルミニウム） ５．５０モル Ｅｕ２Ｏ３（酸化ユーロピウム） ０．０５モル ＢａＣｌ２（塩化バリウム） ０．１８モル Ｈ３ＢＯ３（ホウ酸） ０．０１モル 上記原料を用い、実施例１と同様にして螢光体を得た。
得られた螢光体の組成式は次のとおりである。Example 4 Gd 2 O 3 (gadolinium oxide) 0.0025 mol BaCO 3 (barium carbonate) 0.72 mol MgO (magnesium oxide) 1.40 mol Al 2 O 3 (aluminum oxide) 5.50 mol Eu 2 O 3 (Europium oxide) 0.05 mol BaCl 2 (barium chloride) 0.18 mol H 3 BO 3 (boric acid) 0.01 mol Using the above raw materials, a phosphor was obtained in the same manner as in Example 1.
The composition formula of the obtained phosphor is as follows.
（Ｂａ０．９，Ｅｕ０．１）Ｏ・１．４ＭｇＯ・０．００２５Ｇｄ２Ｏ３・５．
５Ａｌ２Ｏ３ この螢光体の紫外線励起による相対輝度は酸化ガドリニ
ウムを含まない従来の螢光体 （Ｂａ０．９，Ｅｕ０．１）Ｏ・１．４ＭｇＯ・５．５Ａｌ２Ｏ３ に比べて１０５％と明らかな向上が認められるとともに
温度特性の改良が得られた。 (Ba 0.9, Eu 0.1) O · 1.4MgO · 0.0025Gd 2 O 3 · 5.
5Al 2 O 3 The relative brightness of this phosphor excited by ultraviolet light is higher than that of the conventional phosphor (Ba 0.9 , Eu 0.1 ) O · 1.4MgO · 5.5Al 2 O 3 containing no gadolinium oxide. Of 105%, and an improvement in temperature characteristics was obtained.
発明の効果 以上説明したように、本発明によれば、２価のユーロピ
ウムで付活されたバリウムマグネシウムアルミネート螢
光体において、その化学組成を一般式 （Ｂａ，Ｅｕ）Ｏ・ｘＭｇＯ・ｙＧｄ２Ｏ３・ｚＡｌ２
Ｏ３ （ただし、０．８≦ｘ≦３．０，０＜ｙ≦０．０５，４
≦ｚ≦８）で表わされる螢光体としたので、その発光強
度の低下を伴うことなく温度特性を改良することができ
るため、熱劣化が小さく熱的に安定な螢光体を提供する
ことができるという効果を有する螢光体が得られる。As described above, according to the present invention, in the barium magnesium aluminate phosphor activated with divalent europium, its chemical composition is represented by the general formula (Ba, Eu) O.xMgO.yGd 2 O 3 · zAl 2
O 3 (however, 0.8 ≦ x ≦ 3.0, 0 <y ≦ 0.05, 4
Since the phosphor represented by ≦ z ≦ 8) can be improved in temperature characteristics without lowering the emission intensity, a phosphor that is less thermally deteriorated and is thermally stable is provided. It is possible to obtain a phosphor having an effect of being able to perform.
第１図は本発明の一実施例による酸化ガドリニウムの最
適添加量に関する実験データを示す図、第２図は従来の
螢光体との温度特性の比較を示す図である。FIG. 1 is a diagram showing experimental data relating to the optimum addition amount of gadolinium oxide according to an embodiment of the present invention, and FIG. 2 is a diagram showing a comparison of temperature characteristics with a conventional phosphor.
Claims (1)
マグネシウムアルミネート螢光体において、その化学組
成が一般式 （Ｂａ，Ｅｕ）Ｏ・ｘＭｇＯ・ｙＧｄ２Ｏ３・ＺＡｌ２
Ｏ３ （ただし、０．８≦ｘ≦３．０，０＜ｙ≦０．０５，４
≦ｚ≦８）で表わされることを特徴とする螢光体。1. A divalent europium activated barium magnesium aluminate phosphor, the chemical composition formula (Ba, Eu) O · xMgO · yGd 2 O 3 · ZAl 2
O 3 (however, 0.8 ≦ x ≦ 3.0, 0 <y ≦ 0.05, 4
A phosphor characterized by being represented by ≦ z ≦ 8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9724385A JPH0629418B2 (en) | 1985-05-08 | 1985-05-08 | Fluorescent body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9724385A JPH0629418B2 (en) | 1985-05-08 | 1985-05-08 | Fluorescent body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61254689A JPS61254689A (en) | 1986-11-12 |
| JPH0629418B2 true JPH0629418B2 (en) | 1994-04-20 |
Family
ID=14187155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9724385A Expired - Lifetime JPH0629418B2 (en) | 1985-05-08 | 1985-05-08 | Fluorescent body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629418B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8040063B2 (en) | 2007-04-18 | 2011-10-18 | Panasonic Corporation | Blue phosphor, light-emitting device, and plasma display panel |
| US8361347B2 (en) | 2008-07-03 | 2013-01-29 | Panasonic Corporation | Blue phosphor, and light-emitting device using the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2543825B2 (en) * | 1993-04-28 | 1996-10-16 | 根本特殊化学株式会社 | Luminescent phosphor |
| JP3456553B2 (en) * | 1994-11-01 | 2003-10-14 | 根本特殊化学株式会社 | Phosphorescent phosphor |
| US7291290B2 (en) | 2003-09-02 | 2007-11-06 | Matsushita Electric Industrial Co., Ltd. | Phosphor, method of manufacturing same, and plasma display panel using same |
| CN104277830A (en) * | 2014-09-28 | 2015-01-14 | 彩虹集团电子股份有限公司 | Preparation method of blue phosphor for three-basic-color energy-saving lamps |
-
1985
- 1985-05-08 JP JP9724385A patent/JPH0629418B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8040063B2 (en) | 2007-04-18 | 2011-10-18 | Panasonic Corporation | Blue phosphor, light-emitting device, and plasma display panel |
| US8366965B2 (en) | 2007-04-18 | 2013-02-05 | Panasonic Corporation | Blue phosphor, light-emitting device, and plasma display panel |
| US8361347B2 (en) | 2008-07-03 | 2013-01-29 | Panasonic Corporation | Blue phosphor, and light-emitting device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61254689A (en) | 1986-11-12 |
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