Chloride treatment for highly efficient aqueous-processed CdTe nanocrystal-based hybrid solar cells

被引：0
|
作者：
Yao S. [1 ,2 ]
Liu L. [2 ]
Zeng Q. [2 ]
Du X. [2 ]
Im C. [3 ]
Liu Y. [2 ]
Zhang H. [2 ]
Yang B. [2 ]
Cui T. [1 ,4 ]
Tian W. [2 ,5 ]
机构：
[1] College of Physics, Jilin University, Changchun
[2] State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun
[3] Department of Chemistry, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul
[4] State Key Laboratory of Superhard Materials, Jilin University, Changchun
[5] Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, Jilin University, Changchun
来源：
Journal of Materials Chemistry C | 2018年 / 6卷 / 41期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
II-VI semiconductors - Grain growth - Carrier lifetime - Chlorine compounds - Cadmium chloride - Nanocrystals - Solar cells - Solar power generation;
D O I：
10.1039/C8TC03928C
中图分类号：
学科分类号：
摘要：
This work presents the influence of chloride treatment on the photovoltaic performance, microstructure, charge carrier dynamics, and surface chemical composition of aqueous-processed CdTe nanocrystal (NC)-based hybrid solar cells (HSCs). By applying CdCl2 treatment on the CdTe films through a spin-coating method, the power conversion efficiency (PCE) of the HSCs is largely improved from 4.49% to 6.01%. We show that the main role of chloride treatment is to promote the grain growth of the CdTe NCs, which leads to an increase in charge carrier lifetime. It is also demonstrated that CdCl2 treatment can prevent the generation of detrimental surface oxides and improve the wettability of the CdTe films. © The Royal Society of Chemistry.
引用
收藏
页码：11156 / 11161
页数：5
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