Ultrasmooth organic-inorganic perovskite thin-film formation and crystallization for efficient planar heterojunction solar cells

被引：812

作者：

Zhang, Wei ^{[1
]}

Saliba, Michael ^{[1
]}

Moore, David T. ^{[2
]}

Pathak, Sandeep K. ^{[1
]}

Hoerantner, Maximilian T. ^{[1
]}

Stergiopoulos, Thomas ^{[1
]}

Stranks, Samuel D. ^{[1
]}

Eperon, Giles E. ^{[1
]}

Alexander-Webber, Jack A. ^{[1
]}

Abate, Antonio ^{[1
]}

Sadhanala, Aditya ^{[3
]}

Yao, Shuhua ^{[4
]}

Chen, Yulin ^{[1
]}

Friend, Richard H. ^{[3
]}

Estroff, Lara A. ^{[2
,5
]}

Wiesner, Ulrich ^{[2
]}

Snaith, Henry J. ^{[1
]}

机构：

[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[2] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[3] Univ Cambridge, Dept Phys, Cavendish Lab, Cambridge CB3 0HE, England

[4] Nanjing Univ, Dept Mat Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[5] Cornell Univ, Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14853 USA

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

基金：

英国工程与自然科学研究理事会;

关键词：

HALIDE PEROVSKITES; TEMPERATURE; TRANSPORT; SPECTROSCOPY; PERFORMANCE; HYSTERESIS; BEHAVIOR; LENGTHS;

D O I：

10.1038/ncomms7142

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

To date, there have been a plethora of reports on different means to fabricate organic-inorganic metal halide perovskite thin films; however, the inorganic starting materials have been limited to halide-based anions. Here we study the role of the anions in the perovskite solution and their influence upon perovskite crystal growth, film formation and device performance. We find that by using a non-halide lead source (lead acetate) instead of lead chloride or iodide, the perovskite crystal growth is much faster, which allows us to obtain ultrasmooth and almost pinhole-free perovskite films by a simple one-step solution coating with only a few minutes annealing. This synthesis leads to improved device performance in planar heterojunction architectures and answers a critical question as to the role of the anion and excess organic component during crystallization. Our work paves the way to tune the crystal growth kinetics by simple chemistry.

引用

页数：10

共 39 条

[31] Mixed-Organic-Cation Perovskite Photovoltaics for Enhanced Solar-Light Harvesting [J].