양이온 교환에 의한 CuInS²/ZnS 코어-쉘 양자점의 합성과 형광에 대한 연구
CuInS²/ZnS Core-Shell Quantum Dots by Cation Exchange and Their Blue-Shift of Photoluminescence
- 주제(키워드) CuInS²/ZnS 코어-쉘 양자점
- 발행기관 아주대학교 대학원
- 지도교수 김상욱
- 발행년도 2011
- 학위수여년월 2011. 2
- 학위명 석사
- 학과 및 전공 일반대학원 분자과학기술학과
- 실제URI http://www.dcollection.net/handler/ajou/000000011408
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Highly luminescent CuInS²/ZnS (CIS/ZnS) core/shell quantum dots which have quantum yield of 65 % were synthesized by cation exchange reaction. Similar sized CIS core and CIS/ZnS core/shell which were confirmed by the TEM images revealed that cation exchange occurred inside core, as a result, reduced core size and large blue-shifted emission. Elemental analysis by the ICP revealed the CIS cores have gradient composition that is richer in indium close to the surface of the core, which could explain broad emission spectrum. Cation exchange reaction could be applied to AgInS² (AIS) QDs, which showed blue-shift of 70 ㎚ in the emission spectrum. PXRD pattern also showed peak shift as an evidence of core/shell structure.
more목차
Cover page 1
Approval page 3
Acknowledgements 4
Abstract 5
Table of Contents 6
List of Figures 7
List of Scheme 9
Introduction 10
Experimental Section 12
Results and Discussion 14
Conclusions 33
References 34
