“…Mostly this acceptor is ascribed to the CU,,, antisite defect (KUHN, NEUMANN; NEUMANN, TOMLINSON 1990; SITES, HOLLINGSWORTH). An impurity state with an ionization energy of 45 meV which is close to the higher trap energy has only been deduced from luminescence spectra of CuInSe, so far (ABOU- ELFOTOUH et al 1985ELFOTOUH et al , 1987. However, the nature of this impurity (donor or acceptor, type of intrinsic defect) remains open until now.…”