Nominally undoped crystals were implanted with radioactive 111Ag, which decayed to 111Cd, and were investigated by means of photoluminescence spectroscopy. The principal bound exciton line and the donor-acceptor pair band which corresponded to an acceptor level at 0.108eV appeared. Because the intensities of all of these photoluminescence lines decreased in parallel with the half-life (178.8h) of 111Ag, both acceptor levels were concluded to be associated with defects which contained a single Ag atom. Therefore, previous suggestions that these were due to substitutional Ag on Cd lattice sites were confirmed. On the other hand, the suggestions that the X1Ag, X2Ag/C1Ag and C2Ag lines were due to Ag-related defect complexes were not confirmed.

Identification of Ag-Acceptors in 111Ag/111Cd Doped ZnTe and CdTe. J.Hamann, A.Burchard, M.Deicher, T.Filz, S.Lany, V.Ostheimer, F.Strasser, H.Wolf, Isolde, T.Wichert: Journal of Crystal Growth, 2000, 214-215, 207-11