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论文类型： 期刊论文

发表时间： 2012-05-01

发表刊物： JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

收录刊物： SCIE、EI、Scopus

卷号： 73

期号： 5

页面范围： 626-629

ISSN号： 0022-3697

关键字： Hybrid solar cell; Impedance spectroscopy; Electronic transport; Dielectric relaxation

摘要： Impedance spectroscopy of copper phthalocyanine (CuPc)/n-Si hybrid solar cell was studied. The dielectric relaxation mechanism of the solar cell was analyzed by Cole-Cole plots, indicating the presence of a single relaxation mechanism. The equivalent circuit model consisting of a parallel resistor and capacitor in series with a resistor was found to give a well fit to the experimental data. The conduction mechanism was suggested to be a space-charge limited current with exponential trap distribution. Beside, the dielectric relaxation time of the device was decreased with increasing applied bias voltages. (C) 2012 Elsevier Ltd. All rights reserved.