KR101876103B1 - 산질화물 형광체 분말, 산질화물 형광체 분말 제조용 질화규소 분말 및 산질화물 형광체 분말의 제조 방법 - Google Patents
산질화물 형광체 분말, 산질화물 형광체 분말 제조용 질화규소 분말 및 산질화물 형광체 분말의 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 실시예 8의 분말 X선 회절 패턴을 도시하는 도면이다.
도 3은 비교예 5의 분말 X선 회절 패턴을 도시하는 도면이다.
도 4는 실시예 21의 산질화물 형광체 분말 제조용 질화규소 분말을 도시하는 주사형 전자선 현미경 사진이다.
도 5는 실시예 21의 산질화물 형광체 분말 제조용 질화규소 분말을 이용하여 제작한 산질화물 형광체 분말을 도시하는 주사형 전자선 현미경 사진이다.
도 6은 실시예 21의 산질화물 형광체 분말 제조용 질화규소 분말을 이용하여 제작한 산질화물 형광체 분말의 입자 단면의 주사형 투과 전자 현미경 사진이다.
도 7은 도 6에 도시하는 산질화물 형광체 분말의 입자 단면의 표면 근방의 시야 a의 주사형 투과 전자 현미경 사진이다.
Claims (13)
- 조성식:
Cax1Eux2Si12-(y+z)Al(y+z)OzN16-z
(단, 식중, x1, x2, y, z는,
0<x1≤3.40,
0.05≤x2≤0.20,
4.5≤y≤7.0,
0≤z≤1)
로 표시되는 조성이 되도록, 규소원이 되는 물질과, 알루미늄원이 되는 물질과, 칼슘원이 되는 물질과, 유로퓸원이 되는 물질을 혼합하고, 소성하여 얻어지며, α형 사이알론과 질화알루미늄을 포함하고, 질화 알루미늄의 함유량이 4 질량% 이상이고, 450 nm의 파장의 광에 의해 여기되어 피크 파장이 595 ㎚ 내지 605 ㎚의 파장역에 있는 형광을 발하고, 그 때의 외부 양자 효율이 60% 이상인 것을 특징으로 하는 산질화물 형광체 분말. - 제1항에 있어서,
상기 x1, x2, y, z는,
0<x1≤3.40,
0.05≤x2≤0.20,
4.5≤y≤5.5,
0≤z≤1
인 것을 특징으로 하는 산질화물 형광체 분말. - 제2항에 있어서,
상기 x1, x2, y, z가,
1.37≤x1≤2.60,
0.16≤x2≤0.20,
4.50≤y≤5.50,
0≤z≤0.30
인 것을 특징으로 하는 산질화물 형광체 분말. - 제3항에 있어서,
상기 x1, x2, y 및 z가,
1.70≤x1≤2.60,
0.16≤x2≤0.20,
4.50≤y≤5.05,
0≤z≤0.10
인 것을 특징으로 하는 산질화물 형광체 분말. - 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 조성식에서, 질화알루미늄의 함유량이, 4 질량% 이상이고 32 질량%보다 작은 것을 특징으로 하는 산질화물 형광체 분말.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 광 반사율이 80% 이상인 것을 특징으로 하는 산질화물 형광체 분말.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 산질화물 형광체 분말을 구성하는 α형 사이알론 결정상의 격자 상수가 7.93Å≤a=b≤7.99Å, 5.75Å≤c≤5.80Å의 범위인 것을 특징으로 하는 산질화물 형광체 분말.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 레이저 회절/산란식 입도 분포 측정 장치로 측정한 입도 분포 곡선에서의 50% 직경(D50)이 10.0 ㎛ 내지 20.0 ㎛이고, 비표면적이 0.2 ㎡/g 내지 0.6 ㎡/g인 것을 특징으로 하는 산질화물 형광체 분말.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 입자 표면의 비정질층이 2 ㎚ 미만인 것을 특징으로 하는 산질화물 형광체 분말.
- 제1항에 있어서,
상기 x1, x2, y, z가,
1.37≤x1≤2.60,
0.16≤x2≤0.20,
4.50≤y≤5.50,
0≤z≤0.30
이며, 피크 파장이 602 ㎚ 내지 605 ㎚의 파장역에 있는 형광을 발하는 것을 특징으로 하는 산질화물 형광체 분말. - 조성식:
Cax1Eux2Si12-(y+z)Al(y+z)OzN16-z
(단, 식중, x1, x2, y, z는,
0<x1≤3.40,
0.05≤x2≤0.20,
4.5≤y≤7.0,
0≤z≤1)
로 표시되는 조성이 되도록, 규소원이 되는 물질과, 알루미늄원이 되는 물질과, 칼슘원이 되는 물질과, 유로퓸원이 되는 물질을 혼합하고, 불활성 가스 분위기중, 1500℃ 내지 2000℃의 온도 범위에서 소성함으로써, 상기 조성식으로 표시되는 산질화물 소성물을 얻는 제1 공정과,
상기 산질화물 소성물을, 불활성 가스 분위기중, 1100℃ 내지 1600℃의 온도 범위에서 열처리하는 제2 공정
을 갖는 것을 특징으로 하는 제1항 내지 제4항 중 어느 한 항에 기재된 산질화물 형광체 분말의 제조 방법. - 제11항에 있어서, 상기 규소원이 되는 물질이 질화규소 분말이고, 상기 질화규소 분말의 산소 함유량이 0.2 질량% 내지 0.9 질량%이며, 평균 입자 직경이 1.0 ㎛ 내지 12.0 ㎛이며, 비표면적이 0.2 ㎡/g 내지 3.0 ㎡/g인 것을 특징으로 하는 산질화물 형광체 분말의 제조 방법.
- 제11항에 있어서,
상기 x1, x2, y, z가,
1.37≤x1≤2.60,
0.16≤x2≤0.20,
4.50≤y≤5.50,
0≤z≤0.30
인 산질화물 형광체 분말의 제조 방법인 것을 특징으로 하는 산질화물 형광체 분말의 제조 방법.
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PCT/JP2012/076485 WO2013054901A1 (ja) | 2011-10-12 | 2012-10-12 | 酸窒化物蛍光体粉末、酸窒化物蛍光体粉末製造用窒化ケイ素粉末及び酸窒化物蛍光体粉末の製造方法 |
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EP2767572A1 (en) | 2014-08-20 |
JP5854051B2 (ja) | 2016-02-09 |
JPWO2013054901A1 (ja) | 2015-03-30 |
US9758720B2 (en) | 2017-09-12 |
WO2013054901A1 (ja) | 2013-04-18 |
TWI555824B (zh) | 2016-11-01 |
US20140264170A1 (en) | 2014-09-18 |
CN103842473B (zh) | 2016-02-10 |
KR20140054306A (ko) | 2014-05-08 |
TW201335337A (zh) | 2013-09-01 |
EP2767572A4 (en) | 2015-09-30 |
KR20160055951A (ko) | 2016-05-18 |
CN103842473A (zh) | 2014-06-04 |
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