Caraman, M.Untila, D.Canțer, V.Evtodiev, IgorCaraman, Iu.Susu, O.Leontie, L.2017-05-182017-05-182015CARAMAN, M., UNTILA, D. et al. Preparation and optical properties of lamellar GaSe -ZnSe nanocomposites.In: Moldavian Journal of the Physical Sciences. 2015, nr. 1-2(14), pp. 61-681810-648Xhttps://msuir.usm.md/handle/123456789/1152ZnSe-GaSe nanocomposite plates photoluminescent in a photon energy range of 1.80−2.64 eV were obtained via exposing GaSe single-crystal plates to a Zn-vapor heat treatment at temperatures of 673−873 K. The photoluminescence spectrum is dominated bythe self-activated emission band of ZnSe witha maximum at 2.04 eV. The average size of the ZnSe crystallites is ~45 nm. The absorption spectrum of the composite consists of two regions characteristic of direct optical transitions in GaSe crystals with a band gap of 1.99 eV and ZnSe crystallites with aband gap of 2.56 eV at room temperature.ennanocompositeArticle