KR101738551B1 - 반도체 나노 결정 - Google Patents
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Abstract
Description
도 2는 반도체 나노 결정을 포함하는 전류구동형 발광 소자를 나타내는 단면도이다.
도 3은 반도체 나노 결정을 포함하는 광 전환형 발광 소자를 나타내는 단면도이다.
도 4는 본 발명의 일 구현예에 따른 반도체 나노 결정의 XRD (X-ray diffraction) 그래프이다.
도 5A 내지 도 5C는 본 발명의 일 구현예에 따른 반도체 나노 결정의 전자현미경 (TEM) 사진이다.
도 6은 본 발명의 일 구현예에 따른 반도체 나노 결정의 120도 공기 중에서의 열적 안정성을 나타내는 그래프이다.
도 7A 및 도 7C는 본 발명의 일 구현예에 따른 반도체 나노 결정의 발광 스펙트럼이다.
도 8은 비교예에 따른 반도체 나노 결정의 발광 스펙트럼이다.
도 9A 및 도 9B는 비교예에 따른 반도체 나노 결정의 TEM 사진이다.
도 9C는 비교예에 따른 반도체 나노 결정의 발광 스펙트럼이다.
S | Zn | Se | P | In | ||
실시예 1 (ZnSe/InP) |
(mmol) | 0 | 6.591 | 3.622 | 7.522 | 6.294 |
(mol%) | 0 | 27.43 | 15.07 | 31.30 | 26.20 | |
실시예 2 (ZnSe/InP/ZnS) |
(mmol) | 19.616 | 5.307 | 2.153 | 4.746 | 3.743 |
(mol%) | 55.13 | 14.91 | 6.15 | 13.30 | 10.51 |
발광효율(%) | 최대 피크 ( nm ) | 반치폭 ( nm ) | |
실시예
1-1
( Initial ZnSe ) |
43 | 404 | 29 |
실시예
2
( ZnSe / InP / ZnS ) |
46 | 543 | 35 |
실시예
3
( ZnSe / InP / ZnS ) |
58 | 613 | 34 |
3: 발광 다이오드 칩 4: 기판
10: 기판 20: 양극 (anode)
30: 정공 전달층(HTL) 40: 발광층(EL)
50: 전자 전달층(ETL) 60: 음극 (cathode)
Claims (20)
- ZnSe, ZnTe, ZnS, ZnO 또는 이들의 혼합물을 포함하고 직경이 2 nm 내지 5 nm 이며 발광 파장이 405 nm 내지 530 nm 인 코어, 그리고 상기 코어를 둘러싸고 있으며 III-V족 반도체를 포함하는 제1층을 포함하는 반도체 나노결정으로서,
상기 제1층의 두께는 0.3 nm 내지 2 nm 이고,
상기 코어에 포함되어 있는 물질은 상기 제1층에 포함되어 있는 물질보다 에너지 밴드갭이 더 크고,
상기 반도체 나노결정은 카드뮴을 포함하지 않으며,
상기 반도체 나노결정은 발광 파장의 반치폭(full width of half maximum)이 50 nm 이하이고 트랩 발광이 억제되어 있는 반도체 나노 결정. - 제1항에서,
상기 코어의 발광 파장의 반치폭이 10-30 nm인 반도체 나노 결정. - 제1항에서,
상기 코어는 발광 효율이 20 % 이상인 반도체 나노 결정. - 제3항에서,
상기 코어는 밴드 에지 발광(band edge emission)만 나타내는 반도체 나노 결정. - 제1항에서,
상기 반도체 나노결정은, 상기 제1층을 둘러싸고 있으며, II-VI족 반도체 또는 III-V족 반도체를 포함하는 제2층을 더 포함하고,
상기 제2층에 포함되어 있는 물질은 상기 제1층에 포함되어 있는 물질보다 에너지 밴드 갭(energy band gap)이 큰 반도체 나노 결정. - 제1항에서,
상기 제1층은, AlP, AlAs, AlSb, GaN, Gap, GaAs, GaSb, InN, InP, InAs, InSb, 또는 이들의 혼합물을 포함하는 반도체 나노 결정. - 제1항에서,
상기 반도체 나노결정의 발광 파장은 가시광 또는 적외선 영역에 위치하고,
상기 가시광 영역 및 상기 적외선 영역은 410-1200 nm인 반도체 나노 결정. - 제1항에서,
상기 반도체 나노결정은 발광 파장의 반치폭이 35 nm 이하인 반도체 나노 결정. - 제1항에서,
상기 제1 층은 AlN, AlP, AlAs, AlSb, GaN, Gap, GaAs, GaSb, InN, InP, InAs, InSb 또는 이들의 혼합물을 포함하는 반도체 나노 결정. - 삭제
- 삭제
- 제5항에서,
상기 제2층은 ZnTe, ZnSe, ZnS, ZnO, AlN, AlP, AlAs, AlSb, GaN, Gap, GaAs, GaSb, InN, InP, InAs, InSb 또는 이들의 혼합물을 포함하는 반도체 나노 결정. - 제6항에서,
상기 코어의 발광 파장의 반치폭이 10-30 nm인 반도체 나노 결정. - 제6항에서,
상기 코어는 발광 효율이 20 % 이상인 반도체 나노 결정. - 제14항에서,
상기 코어는 밴드 에지 발광(band edge emission)만 나타내는 반도체 나노 결정. - 제1항 내지 제9항 및 제12항 내지 제15항 중 어느 한 항의 반도체 나노 결정이 매트릭스 내에 위치하는 반도체 나노 결정 복합체(semiconductor nanocrystal composite).
- 제16항에서,
상기 매트릭스는 폴리비닐알코올(poly(vinyl alcohol)), 폴리비닐카바졸(poly(vinyl carbazol)), 폴리비닐플루오라이드(poly(vinyl fluoride)), 폴리메틸비닐에테르(poly methyl vinyl ether), 폴리에틸렌(polyethylene), 폴리프로필렌(polypropylene), 폴리스티렌(polystyrene), 폴리비닐피리딘(poly(vinyl pyridine)), 폴리에틸옥사이드(poly(ethylene oxide)), 폴리알킬아크릴레이트(poly alkylacrylate), 폴리실란(poly(silane)), 폴리카르보네이트(polycarbonate), 폴리실록산, 아크릴레이트, 실리콘, 에폭시, 타이타니아, 실리카, 알루미나, 지르코니아(zirconia), 인듐 틴 옥사이드(indium tin oxide)로 이루어진 군에서 선택되는 것인 반도체 나노 결정 복합체. - 제1항 내지 제9항 및 제12항 내지 제15항 중 어느 한 항의 반도체 나노 결정을 포함하는 발광 소자(luminescence device).
- 제18항에서,
상기 발광 소자는 두 개의 전극을 포함하고, 상기 두 전극 사이에 반도체 나노 결정을 포함하는 것인 발광 소자. - 제18항에서,
상기 발광 소자는 광원 및 상기 광원 위에 반도체 나노 결정을 포함하는 것인 발광 소자.
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Application Number | Priority Date | Filing Date | Title |
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KR1020100060233A KR101738551B1 (ko) | 2010-06-24 | 2010-06-24 | 반도체 나노 결정 |
US13/041,157 US8963119B2 (en) | 2010-06-24 | 2011-03-04 | Semiconductor nanocrystal, method of manufacture thereof and articles including the same |
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KR1020100060233A KR101738551B1 (ko) | 2010-06-24 | 2010-06-24 | 반도체 나노 결정 |
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KR101738551B1 true KR101738551B1 (ko) | 2017-05-23 |
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Cited By (2)
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US12031070B2 (en) | 2020-03-13 | 2024-07-09 | Samsung Display Co., Ltd. | Quantum well nanocrystals with quaternary alloy structure for improved light absorption |
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US20130112942A1 (en) | 2011-11-09 | 2013-05-09 | Juanita Kurtin | Composite having semiconductor structures embedded in a matrix |
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