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Brief investigation of the effect of surface states in semiconductor cylinder fibers

One of the major problems with both Semiconductor Cylinder Fibers (SCF) and semiconductor Micro Crystals (MC) in glass is surface states at the semiconductor glass interface. We here make a model for the surface states, analyze their effect and the effect ofbarrier layers. Both, the fact that no shift in energy due to a quantum size effect is observed in the SCF and that the recombination of optically excited charge carriers seems to be by non radiative processes is, probably, due to surface states at the semiconductor glass interfaces. In order to investigate the effect of surface states we model the surface states