B. Floresdesirena et al., INTERACTION OF EXCITON POLARITONS WITH THE SURFACE-POTENTIAL OF THIN SEMICONDUCTOR-FILMS - S-POLARIZATION GEOMETRY, Physical review. B, Condensed matter, 50(8), 1994, pp. 5404-5411
The influence of the surface-potential shape on exciton optical spectr
a for thin semiconductor films is investigated theoretically. Using a
realistic model with both intrinsic and extrinsic contributions, we ca
lculate the polarization vector and the electric field in the case of
s-polarized incident light at one of the thin-film surfaces. Our analy
tic results are employed to study the relation between the surface pot
ential parameters and the spectra of reflectivity and transmissivity.
The generation of near-surface localized excitons and their optical ma
nifestation are also analyzed.