Author: О.М. Маматов, А.С. Байгазиев, Н.Х. Юлдашев

Annotation: We have studied the low-temperature photoluminescence spectra of a thin and fine-grained polycrystalline CdTe layer in an n-CdS / p-CdTe film heterostructure. It is shown that, upon frontal excitation by an Ar + laser, the spectrum consists of the dominant intrinsic () band and its phonon repetition, while under back illumination of the CdS photoresist layer, an asymmetric doublet emission line of excitons and a broad line of shallow donor-acceptor pairs ignite instead of them.

Keywords: Photoluminescence, fine-grained polycrystal, thin film, cadmium telluride, n-CdS / p-CdTe film heterostructure, intrinsic emission, phonon repetition, exciton emission, donor-acceptor pair.