Electric-field assisted perovskite crystallization for high-performance solar cells

被引：41

作者：

Zhang, Cong-Cong ^{[1
]}

Wang, Zhao-Kui ^{[2
]}

Li, Meng ^{[2
]}

Liu, Zhi-Yong ^{[1
]}

Yang, Ji-En ^{[1
]}

Yang, Ying-Guo ^{[3
]}

Gao, Xing-Yu ^{[3
]}

Ma, Heng ^{[1
]}

机构：

[1] Henan Normal Univ, Coll Phys & Mat Sci, Henan Prov Key Lab Photovolta Mat, Xinxiang 453007, Peoples R China

[2] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat Devices, Suzhou 215123, Jiangsu, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 03期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

METHYLAMMONIUM LEAD IODIDE; FERROELECTRIC POLARIZATION; ION MIGRATION; EFFICIENCY; HYSTERESIS; NANOPARTICLES; BEHAVIOR; IMPACT; LAYER; FILM;

D O I：

10.1039/c7ta08204e

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：

We develop an external-electric-field (EEF)-assisted annealing treatment to improve the photoelectric performance of planar organic-inorganic perovskite solar cells (PSCs). The new strategy can control the ion polarization orientation of perovskite films to obtain a good crystallization film and enhance the built-in electric field (BIF), which facilitates the effective promotion of charge separation and transport. Under an optimized treatment of up-EEF-assisted (2.5 V mu m(-1)) annealing, the power conversion efficiency (PCE) of the inverted PSC is improved from 15.33% to 17.26%, and from 16.77% to 19.18% for regular PSCs, compared with the thermal-annealing-only process. The ion polarization and ferroelectricity in the perovskite layer induced by the EEF are intensively discussed. The finding in this work provides a new route to improve perovskite film quality and cell performance.

引用

页码：1161 / 1170

页数：10

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