Journal
JOURNAL OF POWER SOURCES
Volume 331, Issue -, Pages 527-534Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.09.039
Keywords
CeO2:Yb,Er nanotubes; Dye-sensitized solar cells; Band gap; Photoanode; Power conversion efficiency
Funding
- National Natural Science Foundation of China [21273195, 21511140282]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Natural Science Foundation of Jiaangsu Province [BK 20161329]
- Qing Lan Project of Higher Learning Institutions in Jiangsu Province
- high-end talent plan of Yangzhou university
- Jiangsu Key Laboratory of Environmental Material and Environmental Engineering [K11032]
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Yb,Er-doped CeO2 nanotubes were successfully synthesized using Ag nanowires as a hard template via a facile hydrothermal reaction and subsequent calcination and leaching processes. Yb,Er-doped CeO2 nanotubes as a promising assistant layer were investigated to determine theirs photovoltaic properties in an effort to enhance the power conversion efficiency of dye-sensitized solar cells (DSSCs). The influence factors of photoelectric properties of CeO2:Yb,Er NTs, including diameter of nanotubes, hydrothermal time, calcination temperature, and elements doping, have been studied. Compared with pristine P25 photoanode, the DSSCs fabricated by CeO2:Yb,Er nanotubes and P25 exhibited a power conversion efficiency (eta) of 8.67%, an increase of 34%, and incident photo-to-electric conversion efficiency (IPCE) of 92.96%, an increase of 48.83%, which evidence that CeO2:Yb,Er NTs are a promising assistant photoanode material for DSSCs. The enhance mechanism of CeO2:Yb,Er nanotubes has been further revealed according to experimental results. (C) 2016 Elsevier B.V. All rights reserved.
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