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

页码：214 / 219

页数：6

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