The analysis of electron transfer mechanism in quantum- dot-sensitized solar cells

The electron transfer process in quantum- dot-sensitized solar cells, form the light absorber (the quantum dot) to the working electrode (the meta-oxide), has an important role in the overall system efficiency. Using Marcus theory of charge transfer, we study the electron transfer rate for three kinds of quantum dots CdSe, CdS, and CdTe. and three types of metal oxides TiO2, ZnO3, and SnO2. In particular, the effects of quantum dots diameters on the electron transfer rate are analyzed in detail. The results of our numerical calculations show that the structures SnO2/ZnO-CdTe and TiO2-CdS have the highest charge transfer rates. This result can be considered as a guide for the future design of the quantum-dot-sensitized solar cells.

کلیدواژه ها:

Quantum-dot solar cell ، Electron transfer ، Quantum dot ، Metal oxide ، Numerical computation