Elucidating Operating Modes of Bulk-Heterojunction Solar Cells from Impedance Spectroscopy Analysis

被引：117

作者：

Garcia-Belmonte, Germa ^{[1
]}

Guerrero, Antonio ^{[1
]}

Bisquert, Juan ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 06期

关键词：

OPEN-CIRCUIT VOLTAGE; CHARGE RECOMBINATION; EQUIVALENT-CIRCUIT; EFFICIENCY; SEMICONDUCTORS; DIFFUSION; CAPACITANCE; RESISTANCE; MORPHOLOGY; DYNAMICS;

D O I：

10.1021/jz302064z

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 discuss the progress and challenges in the application of impedance spectroscopy analysis to determine key processes and parameters in organic bulk-heterojunction solar cells. When carrier transport or outer interface extraction do not severely influence the solar cell performance, a simple method to quantify the open-circuit voltage loss caused by the kinetics of charge carrier recombination is provided, based on the determination of chemical capacitance and recombination resistance. This easily allows distinguishing between energetic and kinetic effects on photovoltage, and establishes a benchmark for the performance comparison of a set of different cells. A brief discussion of impedance analysis in the much less studied case of collection-limited solar cells is introduced.

引用

收藏

页码：877 / 886

页数：10

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