KR100985680B1 - 형광체 및 그 제조방법, 및 발광 장치 - Google Patents
형광체 및 그 제조방법, 및 발광 장치 Download PDFInfo
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Abstract
Description
스핀 밀도 (spins/g) |
XRD 측정 | Eu 함유량 (중량%) |
평균 입자 지름(㎛) | |||
정성* | 격자 정수 a(nm) | 격자 정수 c(nm) | ||||
비교예 1 | 3.0×1017 | β, AlN 폴리타입 (<1%) |
0.7612 | 0.2912 | 0.60 | 19 |
실시예 1 | 1.4×1017 | β, AlN 폴리타입 (<1%) |
0.7611 | 0.2913 | 0.60 | 19 |
비교예 2 | 3.2×1017 | β, AlN 폴리타입 (<1%) |
0.7610 | 0.2912 | 0.58 | 26 |
비교예 3 | 8.8×1017 | β, AlN 폴리타입 (<1%), Si(6.5%) |
0.7611 | 0.2912 | 0.65 | 18 |
실시예 2 | 8.7×1016 | β 단상 | 0.7612 | 0.2912 | 0.58 | 18 |
실시예 3 | 7.9×1016 | β 단상 | 0.7612 | 0.2912 | 0.52 | 18 |
비교예 4 | 6.5×1016 | β, AlN 폴리타입 (<1%) |
0.7609 | 0.2910 | N.D. | 10 |
비교예 5 | 1.2×1016 | β 단상 | 0.7609 | 0.2909 | N.D. | 11 |
상대 피크 강도(%) |
피크 파장(nm) | 반값 폭 (nm) |
CIE1931 색도 x |
CIE1931 색도 y |
|
비교예 1 | 100 | 540 | 54 | 0.337 | 0.635 |
실시예 1 | 130 | 541 | 54 | 0.341 | 0.631 |
비교예 2 | 90 | 541 | 54 | 0.344 | 0.629 |
비교예 3 | 10 | 537 | 57 | 0.302 | 0.582 |
실시예 2 | 150 | 542 | 55 | 0.347 | 0.628 |
실시예 3 | 160 | 543 | 54 | 0.350 | 0.625 |
비교예 4 | 형광 발광 없음 | ||||
비교예 5 | 형광 발광 없음 |
405nm 여기 | 450nm 여기 | |||||
광 흡수율 (%) |
내부 양자 효율(%) | 발광 효율 (%) |
광 흡수율 (%) |
내부 양자 효율(%) | 발광 효율(%) | |
비교예 1 | 84 | 42 | 34 | 72 | 39 | 28 |
실시예 1 | 83 | 59 | 49 | 73 | 57 | 42 |
비교예 2 | 84 | 37 | 31 | 72 | 36 | 26 |
비교예 3 | 91 | 3 | 3 | 90 | 2 | 2 |
실시예 2 | 84 | 71 | 60 | 73 | 69 | 50 |
실시예 3 | 85 | 77 | 65 | 75 | 70 | 53 |
분쇄 조건 | 입도 분포(㎛) | ||||
시료 공급 속도 (g/h) |
분쇄 에어 압력 (MPa) |
D10 | D50 | D90 | |
실시예 6 | 3000 | 0.2 | 4.9 | 11.2 | 23.2 |
실시예 7 | 480 | 0.5 | 4.3 | 8.0 | 12.2 |
실시예 8 | 250 | 0.6 | 2.8 | 5.1 | 9.8 |
비표면적 (m2/g) |
입도 분포(㎛) | |||
D10 | D50 | D90 | ||
실시예 6 | 0.28 | 5.2 | 11.7 | 24.0 |
실시예 7 | 0.45 | 4.6 | 8.2 | 12.8 |
실시예 8 | 0.76 | 3.0 | 5.2 | 10.0 |
상대 피크 강도(%) | 반값 폭 (nm) |
CIE1931 색도 | 광 흡수율 (%) |
내부 양자 효율(% |
발광 효과 (%) |
||
x | y | ||||||
실시예 6 | 167 | 55 | 0.352 | 0.625 | 69 | 77 | 53 |
실시예 7 | 150 | 55 | 0.345 | 0.628 | 65 | 78 | 51 |
실시예 8 | 126 | 55 | 0.338 | 0.630 | 49 | 80 | 39 |
비표면적 (m2/g) |
입도 분포(㎛) | |||
D10 | D50 | D90 | ||
실시예 9 | 0.24 | 8.4 | 15.0 | 26.4 |
실시예 10 | 0.40 | 4.4 | 7.2 | 11.8 |
상대 피크 강도(%) | 반값 폭 (nm) |
CIE1931 색도 | 광 흡수율 (%) |
내부 양자 효율(%) | 발광 효율 (%) |
||
x | y | ||||||
실시예 9 | 190 | 55 | 0.357 | 0.623 | 72 | 80 | 58 |
실시예 10 | 154 | 55 | 0.348 | 0.626 | 60 | 82 | 49 |
Claims (11)
- 일반식: Si6-ZAlZOZN8-Z로 표시되고 Eu를 함유하는 β형 사이알론을 포함하는 형광체로서, z은 0~4.2이고, 전자 스핀 공명 스펙트럼에 의한 계측에서 25℃에서의 g=2.00±0.02인 흡수에 대응하는 스핀 밀도가 2.0×1017개/g 이하이고 상기 β형 사이알론의 격자 정수 a가 0.7608nm 이상 0.7620nm 이하, 격자 정수 c가 0.2908nm 이상 0.2920nm 이하인 범위에 있는 형광체.
- 청구항 1에 있어서,Eu 함유량이 0.1 중량% 이상 3 중량% 이하인 형광체.
- 청구항 1에 있어서,분말 X선 회절법으로 평가했을 때에 실리콘의 (111) 면의 회절선 강도가 상기 β형 사이알론의 (101) 면의 회절선 강도에 대해서 1% 이하인 형광체.
- 청구항 1에 있어서,분말 X선 회절법으로 평가했을 때에 상기 β형 사이알론 및 실리콘 이외의 회절선 강도가 상기 β형 사이알론의 (101) 면의 회절선 강도에 대해서 모두 10% 이하인 형광체.
- 청구항 1에 있어서,레이저 회절 산란법에 따라 측정한 입자 지름 분포에서, 적산분율에서의 50% 지름(D50)이 6㎛ 이상 30㎛ 이하이고, 또한 10% 지름(D10)이 4㎛ 이상이고, 또한 비표면적이 0.5 m2/g 이하인 형광체.
- 청구항 1 기재의 형광체와 발광 광원을 갖춘 발광 장치.
- 청구항 6에 있어서,상기 형광체에 더하여 발광 파장의 피크가 600nm 이상 700nm 이하인 별도의 형광체를 추가로 포함하는 발광 장치.
- 청구항 6에 있어서,상기 발광 광원으로서 자외선 또는 가시광을 방사할 수 있는 발광 광원을 이용하는 발광 장치.
- 삭제
- Eu를 함유하는 β형 사이알론을 생성시키는 제1 공정과, 진공 중 1200℃ 이상 1550℃ 이하인 온도 범위에서 열처리하고 추가로 불화수소산과 질산의 혼합물로 산 처리함으로써 결정 결함 밀도를 저감하는 제2 공정을 포함하는 형광체의 제조방법.
- Eu를 함유하는 β형 사이알론을 생성시키는 제1 공정과, 질소 분압이 10 kPa 이하인 질소 이외의 가스로 이루어지는 불활성 분위기 중 1300℃ 이상 1600℃ 이하인 온도 범위에서 열처리하고 추가로 불화수소산과 질산의 혼합물로 산 처리함으로써 결정 결함 밀도를 저감하는 제2 공정을 포함하는 형광체의 제조방법.
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EP (1) | EP2093272B1 (ko) |
JP (2) | JP4891336B2 (ko) |
KR (1) | KR100985680B1 (ko) |
CN (1) | CN101600778B (ko) |
TW (1) | TWI357927B (ko) |
WO (1) | WO2008062781A1 (ko) |
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