Exciton localization by a potential well formed by a solid solution in the surface region of a semiconductor
Batyrev A. S. , Karasenko N. V. , Novikov B. V. , Sel'kin A. V. , Tenishev L. N.
New striking features were observed in low-temperature (7=2 —77 K) optical excitonic spectra of CdS crystals. These features are caused by the trapping of excitons in a potential well formed by the solid solution CdSj-vSe^x—O.Ol) in the surface region of a semiconductor.