Polymer assisted growth of high-quality perovskite films by Lewis acid-base adduct for efficient planar-heterojunction solar cells

被引：12
|
作者：
Jia, Xianyu [1 ]
Hu, Ziyang [1 ]
Xu, Jie [1 ]
Huang, Like [2 ]
Zhang, Jing [1 ]
Zhang, Jianjun [2 ]
Zhu, Yuejin [1 ]
机构：
[1] Ningbo Univ, Dept Microelect Sci & Engn, Ningbo Collabrat Innovat Ctr Nonlinear Hazard Sys, Ningbo 315211, Zhejiang, Peoples R China
[2] Nankai Univ, Coll Elect Informat & Opt Engn, Tianjin 300071, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2017年 / 95卷
基金：
美国国家科学基金会;
关键词：
Perovskite; Planar-heterojunction; Solar cells; Poly (methyl methacrylate); Crystallization growth; Lewis acid-base adducts; HIGH-PERFORMANCE; CRYSTAL NUCLEATION; CRYSTALLIZATION;
D O I：
10.1016/j.materresbull.2017.07.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Long-chain insulating polymers dissolved in perovskite precursor solution can assemble the polymer scaffold acted as the function of TiO2 porous layer to improve the quality of the perovskite films. Here, perovskite films with high electronic quality were prepared by mediating nucleation and crystal growth. Polymer post treatment can induce Lewis acid-base reaction with PbCl2, which alleviates the reaction velocity between PbCl2 and CH3NH3I, and then retard perovskite crystallization. The interactions between the perovskite films and polymer with different concentration are addressed to interpret the function and evolution of the polymer long-chains during the annealing process. These solar cells exhibit efficiency more than 15% with small variation. Our work demonstrates the value of retarding nucleation and crystal growth by Lewis acid-base adducts for high-quality perovskite films. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：216 / 222
页数：7
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