Layer dependency of graphene layers in perovskite/graphene solar cells

被引：31
作者：
Ishikawa, Ryousuke [1 ]
Yamazaki, Sohei [2 ]
Watanabe, Sho [2 ]
Tsuboi, Nozomu [2 ]
机构：
[1] Tokyo City Univ, Adv Res Lab, Tokyo 1580082, Japan
[2] Niigata Univ, Dept Mat Sci & Technol, Niigata 9502181, Japan
来源：
CARBON | 2021年 / 172卷
基金：
日本学术振兴会;
关键词：
Perovskite solar cells; Graphene; Interfacial recombination; Work function; Short-circuit current; HIGH-QUALITY; TRANSPORT; POLYMER; HALIDE; GAS;
D O I：
10.1016/j.carbon.2020.10.065
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We previously developed perovskite/graphene solar cells with improved long-term stability. In this study, we investigated the effect of the number of layers on the characteristics of a solar cell by changing the number of graphene layers and further determined the optimum number of graphene layers. We showed that the interfacial recombination due to the damaged layer of the outermost perovskite layer and the band bending of the perovskite layer due to the change of the work function of graphene had a significant influence on the characteristics of the solar cell, especially the short-circuit current. A conversion efficiency of up to 9.4% was obtained as a result of optimizing the formation conditions of the perovskite layer with seven graphene layers. (C) 2020 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：597 / 601
页数：5
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