ODMR studies of recombination emission in II–VI compounds

Abstract

For II–VI materials Optically Detected Magnetic Resonance can be used: (i) to identify donor-acceptor and triplet state recombination emission bands; (ii) to identify the centres participating in such recombination; (iii) to determine the energies of these centres relative to the band edges; (iv) to study energy transfer and competitive recombination processes; and (v) to study exchange and hyperfine interactions and thus to obtain information about the wavefunctions of the centres involved in the recombination. The article explains how these investigations are carried out and illustrates the applications by reference to specific cases. A summary of published work on ODMR of II–VI compounds is given in an appendix.