抄録
The edge emission in CdS was studied, paying special attention to the acceptors involved. At least seven different exciton lines, which are believed to be related with the acceptors responsible for the edge emission, were found in the wavelength region between 4892.6Å and 4876.8Å in various crystals, indicating a wide range of ionization energies of the acceptors. The sample showing two acceptor exciton lines exhibits corresponding edge emissions relevant to these two acceptors. This was confirmed by the observation and analysis of the time-resolved spectra of these edge emissions. The variety of acceptor-bound exciton lines requires prudence for the identification of the chemical nature of the acceptors. Evidence is presented as to similar variety of the edge emission in ZnSe.
