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Proceedings Paper

Preparation and photoelectric properties of mesoporous ZnO/TiO2 composite films for DSSC
Author(s): Mingming Wu; Yue Shen; Feng Gu; Yun Zhang; Yian Xie; Jiancheng Zhang
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Paper 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).

Paper Details

Date Published: 13 October 2009
PDF: 6 pages
Proc. SPIE 7518, Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies, 75180T (13 October 2009); doi: 10.1117/12.843356
Show Author Affiliations
Mingming Wu, Shanghai Univ. (China)
Yue Shen, Shanghai Univ. (China)
Feng Gu, Shanghai Univ. (China)
Yun Zhang, Shanghai Univ. (China)
Yian Xie, Shanghai Univ. (China)
Jiancheng Zhang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 7518:
Photonics and Optoelectronics Meetings (POEM) 2009: Solar Cells, Solid State Lighting, and Information Display Technologies
Michael Grätzel; Hiroshi Amano; Chin Hsin Chen; Changqing Chen; Peng Wang, Editor(s)

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