標題: | SrTiO3/TiO2 Hybridstructure as Photoanode in Dye-Sensitized Solar Cell |
作者: | Wang, Yu-Shiuan Chen, Ting-Ting Huang, Yi-Jen Huang, Tzu-Ping Lee, Yin-Yu Chiu, Hsin-Tien Lee, Chi-Young 應用化學系 Department of Applied Chemistry |
關鍵字: | SrTiO3;Charge recombination;Electron injection |
公開日期: | 1-十二月-2013 |
摘要: | In dye-sensitized solar cells (DSSCs), the charge recombination at the TiO2/dye/electrolyte interface greatly influences the photoelectron conversion efficiency. Hybrid semiconductor materials with matched band potentials are designed to reduce the charge recombination. In this study, SrTiO3/TiO2 hybridstructure was synthesized by using TiO2 nanoparticles as template in a hydrothermal, showing a negative shift in the flat band potential. The DSSC with the SrTiO3/TiO2 anode exhibits an increased photovoltage and a reduced photocurrent. The suppression of charge recombination at the TiO2/dye/electrolyte interface was observed in the electrochemical impedance spectroscopy, causing an improvement in the photovoltage. However, the SrTiO3/TiO2 system shows an obstructed electrons injection from the dye to SrTiO3/TiO2, limiting the photocurrent performance. The photoelectrochemical properties of the SrTiO3/TiO2 system are discussed in detail herein. |
URI: | http://dx.doi.org/10.1002/jccs.201300284 http://hdl.handle.net/11536/23452 |
ISSN: | 0009-4536 |
DOI: | 10.1002/jccs.201300284 |
期刊: | JOURNAL OF THE CHINESE CHEMICAL SOCIETY |
Volume: | 60 |
Issue: | 12 |
起始頁: | 1437 |
結束頁: | 1441 |
顯示於類別: | 期刊論文 |