2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/47

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Subject: search.filters.subject.crystallites

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    CRYSTALLINE STRUCTURE, SURFACE MORPHOLOGY AND OPTICAL PROPERTIES OF NANOLAMELLAR COMPOSITES OBTAINED BY INTERCALATION OF InSe WITH Cd
    (2015) Untila, Dumitru; Caraman, Iuliana; Evtodiev, Igor; Canțer, Valeriu; Spalatu, Nicolae; Leontie, Liviu; Dmitroglo, Liliana; Luchian, Efimia
    A material composed of InSe and CdSe crystallites was obtained by heat treatment at 753K of InSe single crystalline plates in Cd vapour for 3÷24 hours. The average diameters of CdSe and InSe crystallites determined from diffraction lines analysis are respectively equal to 20 nm and 22 nm. The photoluminescence spectra at 300K and 80K of composite decompose well into two Gaussian curves, one is in good correlation with the photoluminescence of CdSe crystals and the other is shifted to higher energies than the width of the band gap of CdSe crystals.
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    OPTICAL PROPERTIES OF GaTe-ZnTe NANOLAMELLAE COMPOSITE
    (2015) Spalatu, Nicolae; Evtodiev, Igor; Caraman, Iuliana; Evtodiev, Silvia; Rotaru, Irina; Caraman, Mihail; Untilă, Dumitru
    A material composed of GaTe and ZnTe crystallites with average diameter of ~ 37 nm and 68 nm respectively was obtained by heat treatment at the temperature of 1000K and 1073K of GaTe plates in Zn vapour for 24 hours. The absorbance spectra of composite material obtained at 1073K and that calculated from diffuse reflection using the Kubelka-Munk formula contains the bands characteristic for light absorption in ZnTe and GaTe crystallites. The photoluminescence spectrum of composite material at the temperature of 80K is composed to the excitonic band in GaTe and impurity bands of ZnTe crystallites.
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    ИССЛЕДОВАНИЕ ПЛЕНОК SnO2, ЛЕГИРОВАННЫХ ПЕРЕХОДНЫМИ МЕТАЛЛАМИ, МЕТОДОМ РЕНТГЕНОВСКОЙ ДИФРАКЦИИ
    (CEP USM, 2021) Борис, Юлия; Брынзарь, Владимир; Тараканова, Лариса; Иванов, Михаил; Коротченков, Геннадий
    The influence of doping of tin dioxide with metals of the transition group during deposition by spray pyrolysis on the film structure is investigated. It is demonstrated that doping is accompanied by an increase in the content of the finely dispersed or amorphous phases. The phase content can be controlled by the change in the intensity of the X-ray diffraction peaks.