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Citation: Qin Yuan-Dong, Wang Jing-Jing, Zou Ying-Hua, Yang Rong, Wang Wei-Bo, Hou Yuan-Jun, Xiao Xu-Rui, Zhang Bao-Wen, Cao Yi. The Charge Transfer Process in Ru-bipydle Complexes Sensitized Nanocrystalline TiO₂ Films[J]. Acta Physico-Chimica Sinica, ;1998, 14(06): 520-526. doi: 10.3866/PKU.WHXB19980608 shu

The Charge Transfer Process in Ru-bipydle Complexes Sensitized Nanocrystalline TiO₂ Films

1.
Department of Physics,Mesoscopic Physics Laboratory,Peking University,Beijing 100871

Received Date: 18 September 1997
Available Online: 15 June 1998

So far in the sensitization research of semiconductor nanoparticles, the outstanding sensitizing system is nanocrystalline TiO2 films sensitized by Ru-bipyridle complxes. In this Paper, we have investigated the electron injection and electron-hole recombination dynamics of two systems sensitized by [3, 3'-(LL)]2 Ru(NCS)2 and [4,4'-(LL)]2Ru(NCS)2. A simple and effective model for calculation has also been presented. Through calculation and fitting, it, is shown that the electron injection is completed within 50 fs for both systems. We have also performed photocurrent spectra measurement. The result indicters that the charge injection efficiency is a major limit factor to incident-photon-to-current efficiency(IPCE). The research is meaningful for sunlight-electricity conversion and solar cells fabrication.
- Dye sensitization,
- Electron injection,
- IPCE
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The Charge Transfer Process in Ru-bipydle Complexes Sensitized Nanocrystalline TiO₂ Films