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Evolution of ZnO architecture on a nanoporous TiO2 film by a hydrothermal method and the photoelectrochemical performance |
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| Authors: | Jiang Yinhua Wu Xiaoli Zhang Wenli Ni Liang and Sun Yueming |
| Affiliation: | 1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China 2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China 3. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China |
| Abstract: | The synthesis of ZnO architecture on a fluorine-doped SnO2 (FTO) conducting glass pre-coated with nanoporous TiO2 film has been achieved by a one-step hydrothermal method at a temperature of 70 ℃.The effect of the reaction time on the morphology of the ZnO architecture has been investigated,and a possible growth mechanism for the formation of the ZnO architecture is discussed in detail.The morphology and phase structures of the as-obtained composite films have been investigated by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD).The results show that the growth time greatly affects the morphology of the obtained ZnO architecture.The photoelectrochemical performances of as-prepared composite films are measured by assembling them into dye sensitized solar cells (DSSCs).The DSSC based on the as-prepared composite film (2 h) has obtained the best power conversion efficiency of 1.845％. |
| Keywords: | ZnO architecture nanoporous TiO2 film hydrothermal synthesis dye-sensitized solar cell |
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