Controlling Crystal Growth via an Autonomously Longitudinal Scaffold for Planar Perovskite Solar Cells

被引：166

作者：

Duan, Xiaopeng ^{[1
,2
]}

Li, Xiang ^{[1
,2
]}

Tan, Licheng ^{[1
,2
]}

Huang, Zengqi ^{[1
,2
]}

Yang, Jia ^{[1
,2
]}

Liu, Gengling ^{[1
,2
]}

Lin, Zhuojia ^{[1
,2
]}

Chen, Yiwang ^{[1
,2
,3
]}

机构：

[1] Nanchang Univ, Coll Chem, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

[2] Nanchang Univ, Inst Polymers & Energy Chem IPEC, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

[3] Jiangxi Normal Univ, Inst Adv Sci Res IASR, 99 Ziyang Ave, Nanchang 330022, Jiangxi, Peoples R China

来源：

ADVANCED MATERIALS | 2020年 / 32卷 / 26期

基金：

中国国家自然科学基金;

关键词：

crystal growth; flexible devices; perovskite solar cells; poly(methyl methacrylate); scaffolds; sequential deposition; LEAD IODIDE PEROVSKITE; HALIDE PEROVSKITES; CH3NH3PBI3; FILMS; GRAIN-BOUNDARY; PERFORMANCE; PASSIVATION; MIGRATION;

D O I：

10.1002/adma.202000617

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sequential deposition is certified as an effective technology to obtain high-performance perovskite solar cells (PVSCs), which can be derivatized into large-scale industrial production. However, dense lead iodide (PbI2) causes incomplete reaction and unsatisfactory solution utilization of perovskite in planar PVSCs without mesoporous titanium dioxide as a support. Here, a novel autonomously longitudinal scaffold constructed by the interspersion of in situ self-polymerized methyl methacrylate (sMMA) in PbI2 is introduced to fabricate efficient PVSCs with excellent flexural endurance and environmental adaptability. By this strategy perovskite solution can be confined within an organic scaffold with vertical crystal growth promoted, effectively inhibiting exciton accumulation and recombination at grain boundaries. Additionally, sMMA cross-linked perovskite network can release mechanical stress and occupy the main channels for ion migration and water/oxygen permeation to significantly improve operational stability, which opens up a new strategy for the commercial development of large-area PVSCs in flexible electronics.

引用

页数：11

共 52 条

[1] ENHANCEMENT OF DIFFUSION-INDUCED GRAIN-BOUNDARY MIGRATION BY ION IRRADIATION [J].