Cost-effective sustainable-engineering of CH3NH3PbI3 perovskite solar cells through slicing and restacking of 2D layers

被引：31

作者：

Wu, Congcong ^{[1
]}

Li, Haijin ^{[1
,2
]}

Yan, Yongke ^{[1
]}

Chi, Bo ^{[2
]}

Pu, Jian ^{[2
]}

Li, Jian ^{[2
]}

Sanghadasa, Mohan ^{[3
]}

Priya, Shashank ^{[1
]}

机构：

[1] Virginia Tech, Ctr Energy Harvesting Mat & Syst, Blacksburg, VA 24061 USA

[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Ctr Fuel Cell Innovat, Wuhan 430074, Peoples R China

[3] US Army RDECOM, Aviat & Missile Res Dev & Engn Ctr, Redstone Arsenal, AL USA

来源：

NANO ENERGY | 2017年 / 36卷

关键词：

Perovskite; 2D layers; Slice; Restack; Sustainable solvent; ORGANIC-INORGANIC PEROVSKITES; CRYSTAL-GROWTH; EFFICIENT; CRYSTALLIZATION; FILMS; TRIHALIDE; SYSTEM;

D O I：

10.1016/j.nanoen.2017.04.034

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：

Owing to their high conversion efficiency and potentially cost-effective manufacturing, organic-inorganic lead halide perovskite solar cells (PSCs) have been dominant photovoltaic research topic in this decade. The photovoltaic performance of PSCs is highly dependent upon the quality of perovskite layer. In order to advance the deployment of PSCs, fabrication of high-quality perovskite film using a facile and sustainable process is essential. This study provides significant breakthrough in this direction. A novel fabrication process is demonstrated that allows slicing of 2D layers from single crystals and restacking them to fabricate high-quality perovskite film. The discovery that CH3NH2 can slice the 3D CH3NH3PbI3 perovskite crystal into 2D layered perovskite intermediates via intercalation process opens a new pathway for pursuing synthesis of a variety of photovoltaic materials. The 2D layered intermediate shows high solubility in acetonitrile (ACN) solvent, which is considered as a replacement for N, N-dimethylformamide (DMF) in order to enable sustainable processing. This solvent system enables fabrication of high-quality perovskite layer by one-step synthesis method. Based on this cost-effective sustainable synthesis approach, low temperature processed PSC was found to match the performance of PSC synthesized using high temperature process.

引用

页码：295 / 302

页数：8

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