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Advances in Condensed Matter Physics
Volume 2014 (2014), Article ID 521493, 5 pages
http://dx.doi.org/10.1155/2014/521493
Research Article

Improved Composite Gel Electrolyte by Layered Vermiculite for Quasi-Solid-State Dye-Sensitized Solar Cells

1State Key Laboratory of Electronic Thin Films and Integrated Devices and School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
2Institute of Electronic and Information Engineering, University of Electronic Science and Technology of China, Dongguan 523808, China

Received 12 March 2014; Accepted 30 March 2014; Published 22 April 2014

Academic Editor: Ke Sun

Copyright © 2014 Hongcai He et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A composite quasisolid electrolyte is prepared by adding a layered vermiculite (VMT) into the iodide/triiodide electrolyte including 4-tert-butylpyridine, which obviously improves the photovoltaic properties of quasisolid dye-sensitized solar cells (DSSCs). When adding 6 wt% VMT, the maximum photovoltaic conversion efficiency of 3.89% is obtained, which reaches more than two times greater than that without VMT. This enhancement effect is primarily explained by studying the Nyquist spectra, dark currents, and photovoltaic conversion efficiency.