Browsing by Author "Canțer, V."

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    Preparation and optical properties of lamellar GaSe -ZnSe nanocomposites [Articol]
    (2015) Caraman, M.; Untila, D.; Canțer, V.; Evtodiev, Igor; Caraman, Iu.; Susu, O.; Leontie, L.
    ZnSe-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.