ELECTRON-CAPTURE AND EMISSION BY THE TI ACCEPTOR LEVEL IN GAP

Previously reported results on deep level optical spectroscopy, optica l absorption, deep level transient spectroscopy, photoluminescence exc itation, and time resolved photoluminescence are reviewed and discusse d in order to know which are the mechanisms involved in electron captu re and emission of the Ti acceptor level in GaP. First, the analysis i ndicates that the T-3(1)(F) crystal-field excited state is not in reso nance with the conduction band states. Second, it is shown that both t he T-3(2) and T-3(1)(F) excited;states do not play any significant rol e in the process of electron emission and capture. (C) 1995 American l nstitute of Physics.