Improved performance of polymer/TiO2 nanorod bulk heterojunction photovoltaic devices by interface modification

In this article, the polymer photovoltaic devices based on the poly(3-hexylthiophene)/TiO2 nanorods hybrid material is present. An enhancement in the device performance can be achieved by removing or replacing the insulating surfactant on the TiO2 nanorod surface with a more conductive ligand, which...

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Bibliographic Details
Published in:Applied physics letters 2008-02, Vol.92 (5)
Main Authors: Lin, Yun-Yue, Chu, Tsung-Hung, Chen, Chun-Wei, Su, Wei-Fang
Format: Article
Language:English
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Summary:In this article, the polymer photovoltaic devices based on the poly(3-hexylthiophene)/TiO2 nanorods hybrid material is present. An enhancement in the device performance can be achieved by removing or replacing the insulating surfactant on the TiO2 nanorod surface with a more conductive ligand, which can play the role to assist charge separation efficiency or also to prevent from back recombination, giving a large improvement in the short circuit current and fill factor. The relatively high power conversion efficiency of 1.7% under simulated AM 1.5 illumination (100mW∕cm2) can be achieved, providing a route for fabricating low-cost, environmentally friendly polymer photovoltaic devices by all-solution processes.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2839405