Perovskite Cluster-Containing Solution for Scalable D-Bar Coating toward High-Throughput Perovskite Solar Cells

被引：154

作者：

Jeong, Dong-Nyuk ^{[1
]}

Lee, Do-Kyoung ^{[1
]}

Seo, Seongrok ^{[2
]}

Lim, Soo Yeon ^{[3
]}

Zhang, Yong ^{[1
]}

Shin, Hyunjung ^{[2
]}

Cheong, Hyeonsik ^{[3
]}

Park, Nam-Gyu ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, South Korea

[2] Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea

[3] Sogang Univ, Dept Phys, Seoul 04107, South Korea

来源：

ACS ENERGY LETTERS | 2019年 / 4卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

THIN-FILMS; LARGE-AREA; HALIDE PEROVSKITES; EFFICIENCY; EVOLUTION;

D O I：

10.1021/acsenergylett.9b00042

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：

For scalable perovskite solar cells (PSCs), deposition of a homogeneous and high-quality perovskite film on a large area (>100 cm(2)) is a prerequisite. Conventional solutions for spin-coating on small areas usually contain polar aprotic solvents with high boiling point, which is difficult to adopt for large-area bar coating because of the uncontrollable and slow drying process due to the strong interaction between polar aprotic solvent and Lewis acidic PbI2 or perovskite. Thus, the precursor solution plays a vital role in the success of large-area coating. Here we report a coating solution suitable for large-area perovskite films. The coating solutions prepared via gas-mediated solid-liquid conversion contain preformed perovskite clusters as confirmed by rotational mode of methylammonium cation in the PbI3- framework from Raman spectroscopy. CH3NH3PbI3 (MAPbI(3)) films formed by D-bar coating within 20 s on the area over 100 cm(2) exhibit tetragonal/cubic superlattice structure with highly preferred orientation in the entire film, which results in average power conversion efficiency (PCE) of 17.01% and best PCE of 17.82%.

引用

页码：1189 / 1195

页数：13

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