1. Hydrothermal preparation of hierarchical SnO2 microsphere for efficient dye-sensitized solar cells.
- Author
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Wang, Yu-Fen, Luo, Qiu-Ping, Ding, Yang, Wang, Xin, Li, Xi-Fei, and Li, De-Jun
- Subjects
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MICROSPHERES , *DYE-sensitized solar cells , *X-ray diffraction , *HYDROTHERMAL synthesis , *TRANSMISSION electron microscopy - Abstract
Three-dimensional hierarchical SnO 2 microspheres (∼0.35–1.60 μm) comprised of 5–10 nm SnO 2 nanoparticles are successfully obtained through a facile hydrothermal reaction pathway, which are detailly characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM) and Transmission electron microscopy (TEM). These samples are then used in photoanodes in dye-sensitized solar cells (DSSCs), whose photovoltaic performances are discussed with photocurrent-voltage ( J-V ) curve. And the highest power conversion efficiency of 4.21% is achieved as the result of hierarchical SnO 2 microspheres (200 °C 12 h) film (∼15.9 μm in thick) photoanode, and the corresponding short-circuit current density ( J sc ) is 9.38 mA cm −2 , open-circuit voltage ( V oc ) is 692 mV, and the fill factor (FF) is 0.59, respectively. Based on the time-dependent SnO 2 products, we propose the evolution mechanism of SnO 2 microspheres. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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