Constructing water-resistant CH3NH3PbI3 perovskite films via coordination interaction

被引：96

作者：

Li, Bo ^{[1
]}

Fei, Chengbin ^{[2
]}

Zheng, Kaibo ^{[3
,5
]}

Qu, Xuanhui ^{[1
]}

Pullerits, Tonu ^{[3
]}

Cao, Guozhong ^{[1
,4
]}

Tian, Jianjun ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China

[3] Lund Univ, Dept Chem Phys & NanoLund, Box 124, S-22100 Lund, Sweden

[4] Univ Washington, Dept Mat & Engn, Seattle, WA 98195 USA

[5] Qatar Univ, Gas Proc Ctr, Dept Chem Engn, Doha, Qatar

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2016年 / 4卷 / 43期

基金：

美国国家科学基金会;

关键词：

SOLAR-CELLS; PHOTOVOLTAIC PROPERTIES; BASE ADDUCT; THIN-FILMS; EFFICIENCY; STABILITY; STATE; TRANSPORT; CH(3)NH(3)PBL(3); PERFORMANCE;

D O I：

10.1039/c6ta06892h

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：

Organic-inorganic halide CH3NH3PbI3 (MAPbI(3)) perovskite solar cells (PSCs) have attracted intensive attention due to their high power conversion efficiency and low fabrication cost. However, MAPbI(3) is known to be very sensitive to humidity, and the intrinsic long-term stability of the MAPbI(3) film remains a critical challenge. 2-Aminoethanethiol (2-AET) was used as a ligand to bridge the organic compound (MAI) and inorganic compound (PbI2), which restricted the fast growth of PbI2 to realize the synchronous growth environment of MAI and PbI2 crystals, resulting in the formation of a compact MAPbI(3) film with polygonal grains. Due to the compact (PbI2)-2-AET-(MAI) molecule barrier layers in the MAPbI(3) structure, the resulting perovskite films showed excellent intrinsic water-resistance, with the MAPbI(3) perovskite crystal structure retained for a long time (>10 minutes) after immersion in water. This work makes a step towards obtaining long-term stable MAPbI(3) perovskite devices.

引用

页码：17018 / 17024

页数：7

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