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.
Similar content being viewed by others
References
Hodes, G., Howell, I. D. J., Peter, L. M., Nanocrystalline photoelectrochemical cells: A new concept in photovaltaic cells, J. Electrochem. Soc., 1992, 139(11): 3136.
Hagfeld, A., Grätzel, M., Light-induced redox reactions in nanocrystalline systems, Chem. Rev., 1995, 95: 49.
Zhou, X. W., Xiao, X. R., Li, X. P., Preparation of quantum sized CdSe nanocrystalline films by chemical solution deposition, Chinese Chemical Letters, 1996, 7(4): 391.
Zhou, X. W., Lin, R. F., Xiao, X. R., Morphologic studies of nanocrystalline CdSe thin films, Applied Surface Science, 1997, 119: 203.
Lin, Y., Lin, R. F., Zhou, X. W. et al., Scanning tunneling microscopic and scanning tunneling spectroscopic studies of nanocrystalline CdSe thin film, Chinese Chemical Letters, 1997, 8(9): 831.
Xiao, X. R., Tien, H. T., Electrochemical solar cells using CdSe thin film electrodes, J. Electrochem. Soc., 1983, 130(1): 55.
Peter, L. M., Dynamic aspects of semiconductor photoelectrichemistry, Chem. Rev., 1990, 90: 753.
Li, J., Peter, L. M., Surface recombination at semiconductor electrodes, part IV: Steady-state and intensity modulated photocurrents at n-GaAs electrodes, J. Electroanal. Chem., 1986, 199: 1.
Li, J., Peter, L. M., Surface recombination at semiconductor electrodes, Part III: Steady-state and intensity modulated photocurrent response, J. Electroanal. Chem., 1985, 193: 27.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, J., Lin, Y., Yin, F. et al. Studies on the interfacial charge transfer processes of nanocrystalline CdSe thin film electrodes by intensity modulated photocurrent spectroscopy. Sc. China Ser. B-Chem. 43, 443–449 (2000). https://doi.org/10.1007/BF02969451
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02969451