JP2009509022A - 紫外線および長波長励起用ケイ酸塩系蛍光体とその製造方法 - Google Patents
紫外線および長波長励起用ケイ酸塩系蛍光体とその製造方法 Download PDFInfo
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- JP2009509022A JP2009509022A JP2008532157A JP2008532157A JP2009509022A JP 2009509022 A JP2009509022 A JP 2009509022A JP 2008532157 A JP2008532157 A JP 2008532157A JP 2008532157 A JP2008532157 A JP 2008532157A JP 2009509022 A JP2009509022 A JP 2009509022A
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
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- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/55—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing beryllium, magnesium, alkali metals or alkaline earth metals
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
- C09K11/71—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing alkaline earth metals
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
Description
(a)ストロンチウム前駆体、バリウム前駆体、亜鉛前駆体およびシリカ前駆体と希土類金属前駆体を化学量論的に混合する段階、
(b)前記混合物を100〜150℃で乾燥し、蛍光体前駆体を製造する段階、および
(c)前記蛍光体前駆体を、窒素と水素の体積が75〜98:2〜25の割合で混合された混合ガス雰囲気下で、800〜1500℃の温度範囲で熱処理を行う段階を有し、前記式1に表される、紫外線および長波長励起用蛍光体の製造方法を特徴とする。
炭酸ストロンチウム(2.76モル)、炭酸バリウム(0.09モル)、酸化亜鉛(0.09モル)、シリカ前駆体(1モル)、および酸化ユーロピウム(0.07モル)を化学量論的に混合し、より効果的な混合のために、アセトン溶媒10mLを使用してボールミル混合器で混合を行った。次に、前記混合物をオーブンに入れて120℃で24時間乾燥した。乾燥した混合物を高純度アルミナボートに入れて電気炉で、水素と窒素が20:80体積比である混合ガス下で24時間1200℃で熱処理を行った。このように製造された紫外線および長波長励起用蛍光体を励起させて、フォトルミネセンススペクトルを測定して、その結果を図2と図3に表し、色座標を表1に表した。
前記表1のように、バリウムと亜鉛の成分の量を変更した以外は前記実施例1と同様の方法で紫外線および長波長励起用蛍光体を製造した。前記蛍光体の色座標を表1に表す。
前記実施例1で製造した蛍光体、緑色蛍光体(Sr2SiO4:Eu)および青色蛍光体(Sr3MgSi2O8:Eu)を1:3:4の重量比で混合し、405nmの波長を有する紫外線発光ダイオードを使用して白色発光ダイオードを製造し、そのフォトルミネセンススペクトルを図7に表した(色座標:x=0.331;y=0.337、白色、CRI=90)。
バリウムを使用せずに、前記実施例1と同様の方法で蛍光体を製造した。測定したフォトルミネセンススペクトルの結果は、輝度が増加し、フォトルミネセンス帯の移動は起きず、発光効率は増加し、色座標はx=0.442、y=0.558であることを示している。
亜鉛を使用せずに、前記実施例1と同様の方法で蛍光体を製造した。測定したフォトルミネセンススペクトルの結果は、フォトルミネセンス帯は585nmに移動し、色座標はx=0.550、y=0.458であることを示している。
Sr2.93SiO5:Eu2+ 0.07蛍光体を使用して製造した発光ダイオードチップのフォトルミネセンススペクトルを測定した結果、色座標はx=0.451、y=0.552であり、演色指数は65と非常に低いことが分かる。
Claims (9)
- (a)基質成分としてストロンチウム前駆体、バリウム前駆体、亜鉛前駆体およびシリカ前駆体と、活性剤成分として希土類金属前駆体を化学量論的に混合する段階、
(b)前記混合物を100〜150℃で乾燥し、蛍光体前駆体を製造する段階、および
(c)前記蛍光体前駆体を、窒素と水素の体積が75〜98:2〜25の割合で混合された混合ガス雰囲気下で800〜1500℃で熱処理を行う段階
を有することを特徴とする、下記式1に表される紫外線および長波長励起用蛍光体の製造方法。
- 前記基質成分に、ストロンチウム1モルに対し、アルカリ土類金属前駆体0.001〜0.5モルと、亜鉛前駆体0.001〜0.5モルが更に添加されることを特徴とする、請求項2記載の紫外線および長波長励起用蛍光体の製造方法。
- 前記ストロンチウム前駆体、アルカリ土類金属前駆体、バリウム前駆体、亜鉛前駆体、シリカ前駆体、ゲルマニウム前駆体および希土類金属はそれぞれ、酸化物、炭酸塩、水酸化物、硫酸塩、フッ化物、酢酸塩、硝酸塩、セレン化物、ヒ酸塩(arsenate)またはタングステン酸塩から得られることを特徴とする、請求項2または3記載の紫外線および長波長励起用蛍光体の製造方法。
- 前記アルカリ土類金属は、カルシウムおよびマグネシウムから選択されることを特徴とする、請求項3記載の紫外線および長波長励起用蛍光体の製造方法。
- 前記希土類金属はユーロピウム、セリウム、プラセオジウム、サマリウム、ガドリニウム、ジスプロシウム、ホルミウム、エルビウム、トリウム、イッテルビウムおよびルテチウムの中から選択することを特徴とする、請求項2記載の紫外線および長波長励起用蛍光体の製造方法。
- 前記紫外線および長波長励起用蛍光体は、400〜485nmの範囲の波長で発光することを特徴とする、請求項2記載の紫外線および長波長励起用蛍光体の製造方法。
- 請求項1の紫外線および長波長励起用蛍光体を含む紫外線発光ダイオード。
- 請求項1の紫外線および長波長励起用蛍光体を含む能動型液晶表示装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2005-0088339 | 2005-09-22 | ||
KR1020050088339A KR100666211B1 (ko) | 2005-09-22 | 2005-09-22 | 자외선 및 장파장 여기용 규산염계 형광체 |
PCT/KR2006/002359 WO2007035026A1 (en) | 2005-09-22 | 2006-06-20 | Silicate phosphor for uv and long-wavelength excitation and preparation method thereof |
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JP2009509022A true JP2009509022A (ja) | 2009-03-05 |
JP5139300B2 JP5139300B2 (ja) | 2013-02-06 |
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JP2008532157A Expired - Fee Related JP5139300B2 (ja) | 2005-09-22 | 2006-06-20 | 紫外線および長波長励起用ケイ酸塩系蛍光体とその製造方法 |
Country Status (6)
Country | Link |
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US (1) | US8388863B2 (ja) |
JP (1) | JP5139300B2 (ja) |
KR (1) | KR100666211B1 (ja) |
CN (1) | CN101273108B (ja) |
DE (1) | DE112006002524T5 (ja) |
WO (1) | WO2007035026A1 (ja) |
Cited By (1)
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JP2007131843A (ja) * | 2005-10-25 | 2007-05-31 | Intematix Corp | シリケート系オレンジ色蛍光体 |
Families Citing this family (19)
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KR100655894B1 (ko) | 2004-05-06 | 2006-12-08 | 서울옵토디바이스주식회사 | 색온도 및 연색성이 우수한 파장변환 발광장치 |
KR100658700B1 (ko) | 2004-05-13 | 2006-12-15 | 서울옵토디바이스주식회사 | Rgb 발광소자와 형광체를 조합한 발광장치 |
US8318044B2 (en) | 2004-06-10 | 2012-11-27 | Seoul Semiconductor Co., Ltd. | Light emitting device |
KR100665298B1 (ko) | 2004-06-10 | 2007-01-04 | 서울반도체 주식회사 | 발광장치 |
KR100665299B1 (ko) | 2004-06-10 | 2007-01-04 | 서울반도체 주식회사 | 발광물질 |
KR101258397B1 (ko) | 2005-11-11 | 2013-04-30 | 서울반도체 주식회사 | 구리 알칼리토 실리케이트 혼성 결정 형광체 |
KR101055772B1 (ko) | 2005-12-15 | 2011-08-11 | 서울반도체 주식회사 | 발광장치 |
US20070295383A1 (en) * | 2006-03-31 | 2007-12-27 | Intematix Corporation | Wavelength-converting phosphors for enhancing the efficiency of a photovoltaic device |
KR100875443B1 (ko) | 2006-03-31 | 2008-12-23 | 서울반도체 주식회사 | 발광 장치 |
KR100785492B1 (ko) * | 2006-04-17 | 2007-12-13 | 한국과학기술원 | 새로운 조성의 황색 발광 Ce3+부활 실리케이트황색형광체, 그 제조방법 및 상기 형광체를 포함하는 백색발광 다이오드 |
US7820075B2 (en) | 2006-08-10 | 2010-10-26 | Intematix Corporation | Phosphor composition with self-adjusting chromaticity |
KR101258227B1 (ko) | 2006-08-29 | 2013-04-25 | 서울반도체 주식회사 | 발광 소자 |
RU2467051C2 (ru) | 2007-08-22 | 2012-11-20 | Сеул Семикондактор Ко., Лтд. | Люминофоры на основе нестехиометрических тетрагональных силикатов меди и щелочноземельного металла и способ их получения |
KR101055769B1 (ko) | 2007-08-28 | 2011-08-11 | 서울반도체 주식회사 | 비화학양론적 정방정계 알칼리 토류 실리케이트 형광체를채택한 발광 장치 |
JP2009064999A (ja) * | 2007-09-07 | 2009-03-26 | He Shan Lide Electronic Enterprise Co Ltd | 低色温度光を生成する方法及びその方法を用いた光放出装置 |
KR101055762B1 (ko) | 2009-09-01 | 2011-08-11 | 서울반도체 주식회사 | 옥시오소실리케이트 발광체를 갖는 발광 물질을 채택한 발광 장치 |
DE102009030205A1 (de) | 2009-06-24 | 2010-12-30 | Litec-Lp Gmbh | Leuchtstoffe mit Eu(II)-dotierten silikatischen Luminophore |
CN102660281B (zh) * | 2012-05-28 | 2014-12-31 | 北京晶创达科技有限公司 | 一种二氧化硅包覆的橙红色荧光粉及其制备方法 |
CN110229194B (zh) * | 2019-06-27 | 2021-09-07 | 河南大学 | 一种镝离子和锑离子同时桥连的锑钨酸盐材料及其制备方法与应用 |
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JP2004161982A (ja) * | 2002-09-24 | 2004-06-10 | Nichia Chem Ind Ltd | 発光装置 |
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-
2005
- 2005-09-22 KR KR1020050088339A patent/KR100666211B1/ko not_active IP Right Cessation
-
2006
- 2006-06-20 CN CN2006800351228A patent/CN101273108B/zh not_active Expired - Fee Related
- 2006-06-20 US US12/067,425 patent/US8388863B2/en not_active Expired - Fee Related
- 2006-06-20 JP JP2008532157A patent/JP5139300B2/ja not_active Expired - Fee Related
- 2006-06-20 WO PCT/KR2006/002359 patent/WO2007035026A1/en active Application Filing
- 2006-06-20 DE DE112006002524T patent/DE112006002524T5/de not_active Ceased
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Title |
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Cited By (1)
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---|---|---|---|---|
JP2007131843A (ja) * | 2005-10-25 | 2007-05-31 | Intematix Corp | シリケート系オレンジ色蛍光体 |
Also Published As
Publication number | Publication date |
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CN101273108A (zh) | 2008-09-24 |
KR100666211B1 (ko) | 2007-01-09 |
WO2007035026A1 (en) | 2007-03-29 |
US20100224830A1 (en) | 2010-09-09 |
CN101273108B (zh) | 2013-01-30 |
JP5139300B2 (ja) | 2013-02-06 |
US8388863B2 (en) | 2013-03-05 |
DE112006002524T5 (de) | 2008-08-14 |
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