Core/Shell structured PbS/CuS QD synthesized in low temperature process showing high solar cell efficiency
- 주제(키워드) PbS , CuS , quantum dots , core-shell , cationic exchange , solar cells
- 발행기관 아주대학교
- 지도교수 김상욱
- 발행년도 2018
- 학위수여년월 2018. 2
- 학위명 석사
- 학과 및 전공 일반대학원 분자과학기술학과
- 실제URI http://www.dcollection.net/handler/ajou/000000027691
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
PbS/CuS hetero-nanostructured (HNS) quantum dots were successfully prepared through cation exchange reaction. Additionally, it was possible to control the CuS amounts through a low temperature process. As the CuS is formed, the band edge absorption of PbS decreases, and a large absorption is obtained in the NIR region due to the surface plasmon effect (SPR), which is a result of CuS vacancy. PbS/CuS HNS quantum dots with these unique optical properties and structures were applied to solar cells. Cell characteristics are improved by the ease of hole transport, which can be explained from the p-type property of CuS. Optimization of cell characteristics was achieved by controlled CuS concentrations and PCE of 9.32% was obtained. The reason for the optimal CuS concentration was explained by the transient PL decays measurement on TiO2 and Al2O3 substrates.
more목차
Introduction 1
Experimental Section 3
Results and Discussion 6
Conclusion 12
Schemes 13
Tables 14
Figures 17
References 26
