Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells

被引：119

作者：

Bertoluzzi, Luca ^{[1
]}

Sanchez, Rafael S. ^{[1
]}

Liu, Linfeng ^{[2
]}

Lee, Jin-Wook ^{[3
,4
]}

Mas-Marza, Elena ^{[1
]}

Han, Hongwei ^{[2
]}

Park, Nam-Gyu ^{[3
,4
]}

Mora-Sero, Ivan ^{[1
]}

Bisquert, Juan ^{[1
,5
]}

机构：

[1] Univ Jaume 1, Dept Fis, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Michael Gratzel Ctr Mesoscop Solar Cells, Wuhan 430074, Hubei, Peoples R China

[3] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea

[4] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea

[5] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2015年 / 8卷 / 03期

基金：

新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

RELAXATION; ELECTRON; INHOMOGENEITIES; SEMICONDUCTOR; CONSTANTS; ORIGINS; LENGTHS;

D O I：

10.1039/c4ee03171g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Despite the large photovoltaic performance recently achieved, many aspects of the working principles of hybrid organic-inorganic perovskite solar cells remain to be unveiled. We analyze the experimental features observed in the decay of photovoltage and provide an interpretation of the different depolarization regimes at distinct time scales. We introduce an instantaneous relaxation time that shows the type of relaxation for each separate mechanism. The decay of photovoltage is characterized by electronic events at the ms time scale followed by a power law relaxation in the 10-100 s time window. The latter process is associated with the slow dielectric relaxation of CH3NH3PbI3 perovskite and it points to cooperative kinetics of polarization and depolarization of ferroelectric domains. These findings provide an important tool for interpretation of kinetic features in the perovskite ferroic solar cells.

引用

页码：910 / 915

页数：6

共 37 条

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