FE²�?ZNS CRYSTAL NO FURTHER A MYSTERY

Having said that, this peak at ~978 nm was noticed in equally iron-doped and -undoped ZnSe single crystals, and its built-in intensity was bigger while in the iron-undoped sample in comparison with the iron-doped sample. As a result, we feel that the luminescence peak at ~978 nm isn't related to the emission band involving the doped iron atoms but