A Layered Hybrid Perovskite Solar-Cell Absorber with Enhanced Moisture Stability

被引：1677

作者：

Smith, Ian C. ^{[1
]}

Hoke, Eric T. ^{[2
]}

Solis-Ibarra, Diego ^{[1
]}

McGehee, Michael D. ^{[2
]}

Karunadasa, Hemamala I. ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 42期

关键词：

layered compounds; materials science; perovskite; photovoltaics; solar cells; DETAILED BALANCE LIMIT; HALIDE PEROVSKITES; EFFICIENT; TIN; ELECTROLUMINESCENCE; EXCITONS; LENGTHS;

D O I：

10.1002/anie.201406466

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two-dimensional hybrid perovskites are used as absorbers in solar cells. Our first-generation devices containing (PEA)(2)(MA)(2)[Pb3I10] (1; PEA=C6H5(CH2)(2)NH3+, MA=CH3NH3+) show an open-circuit voltage of 1.18V and a power conversion efficiency of 4.73%. The layered structure allows for high-quality films to be deposited through spin coating and high-temperature annealing is not required for device fabrication. The 3Dperovskite (MA)[PbI3] (2) has recently been identified as a promising absorber for solar cells. However, its instability to moisture requires anhydrous processing and operating conditions. Films of 1 are more moisture resistant than films of 2 and devices containing 1 can be fabricated under ambient humidity levels. The larger bandgap of the 2Dstructure is also suitable as the higher bandgap absorber in a dual-absorber tandem device. Compared to 2, the layered perovskite structure may offer greater tunability at the molecular level for material optimization.

引用

页码：11232 / 11235

页数：4

共 38 条

[1] Synthesis and crystal chemistry of the hybrid perovskite (CH3NH3) PbI3 for solid-state sensitised solar cell applications [J].