Preparation and photoelectric properties of mesoporous ZnO/TiO2 composite films for DSSC

Mingming Wu; Yue Shen; Feng Gu; Yun Zhang; Yian Xie; Jiancheng Zhang

doi:10.1117/12.843356

12 October 2009 Preparation and photoelectric properties of mesoporous ZnO/TiO₂ composite films for DSSC

Mingming Wu, Yue Shen, Feng Gu, Yun Zhang, Yian Xie, Jiancheng Zhang

Proceedings Volume 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies; 75180T (2009) https://doi.org/10.1117/12.843356
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

Mesoporous TiO₂/ZnO (M-TiO₂-xZn (x=10, 30, 50, 70, 90)) composite films have been prepared in sol-gel method by spin coating process. The films have sponge-like microcrystalline phase structures, as evidenced from TEM. The SAXRD patterns of M-TiO₂-xZn thin films suggest that the films exhibit mesoporous structure. The diameter/d value of thin films is around 11.76 nm, 7.88 nm, 6.89 nm, 10.02 nm and 13.78 nm, respectively. UV/vis transmittance spectra indicate that the fundamental transmittance edge of M-TiO₂-xZn films has a blue shift from 350 nm to 310 nm firstly, and then has a red shift. Photoluminescence (PL) spectra of M-TiO₂-xZn have three emission peaks, which are caused by near-band edge (NBE) emission and structural defects or/and impurities M-TiO₂-xZn thin films display a positive photovoltaic effect with the Zn content increased above 70 mol %, which may improve the energy conversion efficiency of M-TiO₂-xZn in Dye-sensitized solar cells (DSSC).

Citation Download Citation

Mingming Wu, Yue Shen, Feng Gu, Yun Zhang, Yian Xie, and Jiancheng Zhang "Preparation and photoelectric properties of mesoporous ZnO/TiO₂ composite films for DSSC", Proc. SPIE 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies, 75180T (12 October 2009); https://doi.org/10.1117/12.843356

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