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A. P. SHPAK, S. I. POKUTNIY, V. A. SMYNTYNA, and V. M. UVAROV
«Interband Light Absorption in Semiconductor Nanoсrystals»
083–095 (2008)
PACS numbers: 71.35.Cc, 73.20.Mf, 78.66.Vs, 78.67.Bf, 78.67.Hc, 78.68.+m
The results of theoretical and experimental investigations of interband light
absorption in semiconductor nanocrystals are analyzed. As shown, the absorption
edge in a nanocrystal is shifted to shorter wavelengths if the polarization
interaction of an electron and a hole with the nanocrystal surface is
taken into account. As revealed, the absorption edge for nanocrystals is
formed by two transitions comparable by intensity. These transitions occur
from different levels of size-related quantization for a hole to the lower level
of size-related quantization for an electron.
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