A charge carrier should be excited and inelastically scattered by aphonon, and a second elastics cattering by defector zone boundary must occur to produce recombination and cause the ap pearance of a D peak.
A charge carrier should be excited and inelastically scatteredby aphonon, and a second elastics cattering by defector zoneboundary must occur to produce recombination and cause theap pearance of a D peak.