Influence of near-surface layer on the anomalies in the spectrum of exciton reflection of CdS single crystals at T = 4.20K
Benemanskaya G.V. , Novikov B.V. , Cherednichenko A.E.
It was observed that the exciton-reflection spectra can be reversibly altered by irradiating CdS single crystals with low-energy electrons. Depending on the radiation dose, an exciton-free ("dead") layer of different depth is produced at the surface of the crystal, and this makes it possible to obtain quite definite curves of reflection spectra with different anomalies.