Properties and Optimization of Photoanode in Dye-Sensitized Solar Cells

Abstract:

In order to improve the photoelectric conversion efficiency of dye-sensitized solar cells (DSSC), the photoanode process conditions were optimized in this work. The effects on photoelectric conversion efficiency of three methods were mainly investigated, including magnetron sputtering barrier layer, printing scattering layer and post-treatment with TiCl₄. The microstructure of TiO₂ thin films was measured by scanning electron microscope (SEM). The results showed that porous photoanode benefited to electronic transmission. The photoelectric conversion efficiency and performance of DSSC were measured by I-V testing instrument. The results indicated that the short circuit current and photoelectric conversion efficiency were improved. Finally, the best result was obtained by combining the three optimal conditions. A high photoelectric conversion efficiency of 7.31% was achieved under illumination of simulated AM 1.5 sunlight (100mW/cm²). Compared to the previous result of 5.48%, the improvement of 33.4% was achieved.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 884-887
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.884
• Online since: March 2014
• Authors: Hui Xia Cao, Ze Zhou, Xiao Di Li, Bo Yu Wang, Yu Lin Zhang, Xiao Qiang Wang, Ming Ya Li*
• Keywords: Barrier Layer, Dye-Sensitized Solar Cell, Scattering Layer, TiCl₄

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