Dodecanethiol을 이용하여 크기를 조절하는 InPZnS Alloy 양자점의 대량합성
Large-Scale Synthesis of InPZnS Alloy Quantum Dots with Dodecanethiol as a Size Controller
- 주제(키워드) Quantum dots , Large-Scale , Alloy , InPZnS , Core/Shell
- 발행기관 아주대학교
- 지도교수 김상욱
- 발행년도 2012
- 학위수여년월 2012. 2
- 학위명 석사
- 학과 및 전공 일반대학원 재료공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000012174
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
A novel and facile method for the large scale synthesis of InPZnS alloy QDs was developed, which tune the optical properties by controlling the dodecanethiol to palmitic acid ratio. The absorption and emission peaks showed a blue-shift as the amount of DDT increased. The alloy structure was confirmed with TEM, elemental analysis, XRD and XPS, particularly, P2p peaks for In-P and InP-S bond in XPS analysis could give a clear evidence. The alloy QDs were overcoated with ZnS shell and the QY are in the ranges 20% - 45% for all wavelengths. Finally, a cadmium-free QD yield in a single reaction was determined to be 2.74 g.
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