Fabrication of a TiO2-P25/(TiO2-P25+TiO2 nanotubes) junction for dye sensitized solar cells

Progress in Natural Science: Materials International

Soo Wohn Lee¹  Gobinda Gyawali²  Nguyen Huy Hao²  Tohru Sekino³ 

[1] Department of Environmental and Bio-chemical Engineering, Sun Moon University, Asan, Republic of Korea;Research Center for Eco-multifunctional Nano Materials, Sun Moon University, Asan, Republic of Korea;The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University, Japan;

关键词: TiO2 nanotube;    Hydrothermal method;    DSSC;    Efficiency;    Double layer;   

DOI  :  10.1016/j.pnsc.2016.07.002

来源: DOAJ

【 摘 要 】

The dye sensitized solar cell (DSSC), which converts solar light into electric energy, is expected to be a promising renewable energy source for today's world. In this work, dye sensitized solar cells, one containing a single layer and one containing a double layer, were fabricated. In the double layer DSSC structure, the under-layer was TiO2-P25 film, and the top layer consisted of a mixture of TiO2-P25 and TiO2 nanotubes. The results indicated that the efficiency of the DSSC with the double layer structure was a significant improvement in comparison to the DSSC consisting of only a single film layer. The addition of TiO2-P25 in the top layer caused an improvement in the adsorption of dye molecules on the film rather than on the TiO2 nanotubes only. The presence of the TiO2 nanotubes together with TiO2-P25 in the top layer revealed the enhancement in harvesting the incident light and an improvement of electron transport through the film.

【 授权许可】

Unknown