Perovskite solar cells employing an eco-friendly and low-cost inorganic hole transport layer for enhanced photovoltaic performance and operational stability

被引:53
作者
Li, Xin [1 ]
Yang, Junyou [1 ]
Jiang, Qinghui [1 ]
Lai, Hui [1 ,2 ]
Li, Shuiping [1 ]
Tan, Yao [1 ]
Chen, Ying [1 ]
Li, Suwei [1 ]
机构
[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, China Eu Inst Clean & Renewable Energy, Wuhan 430074, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
EFFICIENT; PLANAR; HYSTERESIS; FILMS; TIO2;
D O I
10.1039/c9ta01499c
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
Environmental concerns and the high cost of some key components are the main obstacles to the practical applications of perovskite solar cells (PSCs). Herein, a novel, eco-friendly and lost-cost MnS film was developed and employed as an efficient inorganic hole transport layer (HTL) of PSCs for the first time via the technique of vacuum vapor deposition. Benefiting from its good optical transparency, high hole mobility and suitable band alignment, an excellent power conversion efficiency (PCE) of 19.86% was achieved in the optimized device with an inorganic HTL of manganese sulfide (MnS) without any further interface optimization. More importantly, the MnS-based devices demonstrated superior stability over their counterparts with organic HTLs; they retained over 90% of their initial efficiency even after exposure to air with a relative humidity of 80% for 1000 h without any encapsulation. It also remarkably improved the thermal stability of the devices than their organic counterparts. These results highlight the great potential of the MnS HTL for achieving eco-friendly, cost-effective and stable photovoltaic devices.
引用
收藏
页码:7065 / 7073
页数:9
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