Abstract
The exciton photoreflection spectra of CdS crystals are studied. It is found that the form of the exciton photoreflection spectrum is determined by a Stark shift of the exciton energy in the electric field of surface states. The dependences of the exciton photoreflection spectrum on temperature on the intensity and wavelength of the modulating radiation, and on the processes by which the photoreflection signal relaxes is determined. An energy scheme is proposed for the surface states which explains the observed effects of photoinduced changes in the surface field. A correlation is established between the exciton photoreflection spectrum and the form of the fine structure in the photoconductivity.
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Fiz. Tverd. Tela (St. Petersburg) 40, 875–876 (May 1998)
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Bisengaliev, R.A., Batyrev, É.D., Novikov, B.V. et al. Photoreflection and photoconduction spectra of CdS crystals: Excitons in the electric fields of surface states. Phys. Solid State 40, 806–807 (1998). https://doi.org/10.1134/1.1130403
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DOI: https://doi.org/10.1134/1.1130403