KR102003989B1 - 양자점 패시베이션 방법 및 이를 이용한 양자점-산화물 복합체 제조 방법 - Google Patents
양자점 패시베이션 방법 및 이를 이용한 양자점-산화물 복합체 제조 방법 Download PDFInfo
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
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- C—CHEMISTRY; METALLURGY
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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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
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
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- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
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Abstract
Description
도 2의 (a)는 InP, InP/ZnSeS, InP/ZnSeS/ZnS QD, 그리고 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 XRD 패턴을 비교한 것이고, (b)는 순수 InP/ZnSeS/ZnS QD(비교예 1)의 TEM 이미지이며, (c)는 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD(실험예 1)의 TEM 이미지이다.
도 3은 고배율 XPS(X-ray photoelectron spectroscopic) 스캔결과이다. 도 3의 (a)는 Ti 2p, (b)는 Ti 3s 및 Se 3d5 / 2,(c)는 Zn 2p,(d)는 S 2p3 /2, 그리고 (e)는 O 1s 광전자 피크(InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD를 각각 보여줌)이며, (f)는 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD 스캔의 O 1s 피크 분해를 도시한다.
도 4는 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 FT-IR((Fourier transform infrared) 스펙트럼을 비교한 그래프이다.
도 5는 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 (a) UV-가시광 흡수 및 (b) 광(光) 루미네선스(Photo-Luminescence, PL) 스펙트럼을 도시한다. (a)안의 삽입그림은 클로로폼 안의 Ti(i-PrO)4 용액의 흡수 스펙트럼을 나타낸다.
도 6의 (a)는 UV 조사 시간에 따른 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 상대 QD 방출 면적의 변화를 도시한 그래프이다. 에러바(error bar)는 각 샘플에 대해 세 번 반복된 측정을 나타낸다. (b)와 (c)는 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 PL 스펙트럼 변화를 보여준다.
도 7의 (a)는 150℃에서의 열적 에이징 시간에 따른 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 상대 QD 방출 면적의 변화를 도시한 그래프이다. 에러바는 각 샘플에 대해 세 번 반복된 측정을 나타낸다. (b)와 (c)는 순수 InP/ZnSeS/ZnS QD와 Ti(i-PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD의 PL 스펙트럼 변화를 보여준다.
도 8은 UV 조사 시간에 따른 순수 InP/ZnSeS/ZnS QD(비교예 2)와 Zr(PrO)4-컴플렉싱된 InP/ZnSeS/ZnS QD(실험예 2)의 상대 QD 방출 면적의 변화를 도시한 그래프이다.
10’ : 1차 패시베이션된 양자점
20 : 산화물 기지
30 : 복합체
Claims (10)
- 삭제
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- 삭제
- 삭제
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- 삭제
- 전구체들을 포함하는 용액으로부터 코어 양자점을 형성하는 단계;
상기 코어 양자점이 형성된 용액에 쉘 스톡 용액을 적용하여 상기 코어 양자점 상에 쉘을 형성함으로써 코어/쉘 구조의 양자점을 성장시키는 단계;
상기 양자점이 성장되어 있는 용액에 금속 알콕사이드를 첨가하여 상기 양자점 표면의 유기 리간드와 금속 알콕사이드가 인시튜 컴플렉싱되도록 하는 1차 패시베이션 단계; 및
상기 1차 패시베이션된 양자점을 금속 산화물 형성 졸-겔 반응에 투입하여 2차 패시베이션하는 단계를 포함하는 양자점-산화물 복합체 제조 방법. - 제9항에 있어서, 상기 2차 패시베이션하는 단계 동안에 상기 1차 패시베이션된 양자점의 유기 리간드 탈락이 방지되는 것을 특징으로 하는 양자점-산화물 복합체 제조 방법.
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