Studies on the interfacial charge transfer processes of nanocrystalline CdSe thin film electrodes by intensity modulated photocurrent spectroscopy |
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Authors: | ZHANG Jingbo LIN Yuan YIN Feng XIAO Xurui |
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Institution: | Photochemical Laboratory, Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100101, China |
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Abstract: | Interfacial charge transfer kinetics of the nanocrystalline CdSe thin film electrodes have been studied in sodium polysulfide solutions by intensity modulated photocurrent spectroscopy (IMPS). The interfacial direct and indirect charge transfer and recombination processes were analyzed in terms of the parameters: normalized steady state photocurrents and surface state lifetimes obtained by measuring the IMPS responses under different applied potentials and different solution concentrations. IMPS responses of polycrystalline CdSe thin film electrodes were also presented for comparison. |
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Keywords: | intensity modulated photocurrent spectroscopy nanocrystalline CdSe electrodes interfacial charge transfer processes |
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