期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 15, 页码 8076-8082出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta01176k
关键词
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资金
- National 973 Program [2011CBA00702, 2015CB932204]
- National 863 Project [2013AA031502]
- National Science and Technology Support Program [2015BAI01B05]
- National Natural Science Foundation of China [51202046, 21203175, 51473158, 51125015, 91233206]
- Fundamental Research Funds for the Central Universities [HIT.NS-RIF.2013006, HIT.BRETIII.201403]
- China Post-doctoral Science Foundation [2012M510087, 2013T60366]
Zn-doped SnO2 nanocrystals were successfully synthesized by a simple hydrothermal method. It is found that Zn doping into SnO2 can induce a negative shift in the flat-band potential (V-FB) and increase the isoelectric point. As a result, dye-sensitized solar cells (DSCs) based on Zn-doped SnO2 nanocrystal photoanodes exhibit longer electron lifetimes and higher dye loading compared to undoped SnO2 based DSCs. The overall power conversion efficiency (eta) of the optimized Zn-doped SnO2 based DSC reaches 4.18% and increases to 7.70% after the TiCl4 treatment. More importantly, a remarkable h of 8.23% is achieved for DSCs based on a high-quality double-layer SnO2 photoanode with the TiCl4 treatment, to the best of our knowledge, which is so far the best reported efficiency for DSCs based on SnO2 photoanodes.
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