Photovoltaic Performance and Charge Recombination Dynamics of P3HT/PCBM Blend Heterojunction

doi:10.1007/s40242-013-3152-1

Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1185-1188.doi: 10.1007/s40242-013-3152-1

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Photovoltaic Performance and Charge Recombination Dynamics of P3HT/PCBM Blend Heterojunction

YAO Jin-bo¹, WANG Ying-hui², ZHANG Han-zhuang²

1. Training Department, Air Force Aviation University, Changchun 130022, P. R. China;
2. College of Physics, Jilin University, Changchun 130012, P. R. China

Received:2013-04-02 Revised:2013-05-27 Online:2013-12-01 Published:2013-08-21
Contact: WANG Ying-hui E-mail:yinghui_wang@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21103161, 11274142), the Natural Science Foundation of Jilin Province, China(No.20070512), the National Found for Fostering Talents of Basic Science of China(No.J1103202) and the China Postdoctoral Science Foundation(No.2011M500927).

Abstract

Abstract:

We prepared the polymer solar cell based on poly(3-hexylthiophene)(P3HT)/fullerene derivative PCBM(PCBM=[6,6]-phenyl-C61-butyric acid methyl ester) heterojunction and investigated the irradiation intensity-dependent charge recombination dynamics of heterojunction employing nanosecond transient absorption spectroscopy with bias light so as to simulate the photophysical process in heterojunction when the photovoltaic device is on operation. The experimental data exhibit that the yield of free charges gradually decreases and the loss of mobile carriers originated from bimolecular recombination simultaneously increases as the irradiation intensity gradually enhances. This indicates that the polymer solar cell is much suitably used at a low irradiation intensity.

Key words: Polymer solar cell, Charge recombination, Transient absorption

YAO Jin-bo, WANG Ying-hui, ZHANG Han-zhuang. Photovoltaic Performance and Charge Recombination Dynamics of P3HT/PCBM Blend Heterojunction[J]. Chemical Research in Chinese Universities, 2013, 29(6): 1185-1188.

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Photovoltaic Performance and Charge Recombination Dynamics of P3HT/PCBM Blend Heterojunction

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