Fully Vacuum-Processed Wide Band Gap Mixed-Halide Perovskite Solar Cells

被引：101
作者：
Longo, Giulia [1 ]
Momblona, Cristina [1 ]
La-Placa, Maria-Grazia [1 ]
Gil-Escrig, Lidom [1 ]
Sessolo, Michele [1 ]
Bolink, Henk J. [1 ]
机构：
[1] Univ Valencia, Inst Ciencia Mol, C Catedrat J Beltran 2, Paterna 46980, Spain
来源：
ACS ENERGY LETTERS | 2018年 / 3卷 / 01期
基金：
欧盟地平线“2020”;
关键词：
THIN-FILMS; SEGREGATION; EFFICIENT; LAYERS; PERFORMANCE; MANAGEMENT; IODIDE; SPACE;
D O I：
10.1021/acsenergylett.7b01217
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：
Methylammonium lead mixed-halide perovskites MAPb(BrxI1-x)(3) are promising materials for the preparation of tandem devices. When exposed to light, MAPb(BrxI1-x)(3) segregates in iodide- and bromide-rich phases, limiting the achievable photovoltage and hence the attainable device efficiency. To date only solution processed mixed-halide perovskites have been demonstrated. We present fully vacuum-deposited mixed-halide perovskite thin films with band gap of 1.72 and 1.87 eV, prepared by controlling the deposition rates of the different halide precursors. When used in thin-film devices, these materials lead to power conversion efficiencies of 15.9 and 10.5%, respectively, which are among the highest reported to date for these types of wide band gap absorbers.
引用
收藏
页码：214 / 219
页数：6
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