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SM ISO690:2012 LUNGU, Ion, GHIMPU, Lidia, UNTILA, Dumitru, POTLOG, Tamara. Copper-related defects in ZnTe thin films grown by the close space sublimation method. In: Moldavian Journal of the Physical Sciences, 2022, nr. 1(21), pp. 34-41. ISSN 1810-648X. DOI: https://doi.org/10.53081/mjps.2022.21-1.03 |
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Moldavian Journal of the Physical Sciences | ||||||
Numărul 1(21) / 2022 / ISSN 1810-648X /ISSNe 2537-6365 | ||||||
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DOI:https://doi.org/10.53081/mjps.2022.21-1.03 | ||||||
Pag. 34-41 | ||||||
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Low-temperature photoluminescence (PL) is used to study defects evolution via immersion technique and annealing in vacuum of ZnTe thin films. In this paper we studied how copper doping from solutions of different molar concentrations affects PL of ZnTe thin films grown by close space sublimation (CSS) method. Undoped ZnTe thin films showed PL emission in the (520-680) nm wavelength region. The incorporation of copper in ZnTe produce a number of broad emission bands that correspond to an electron transition from the conduction band to spin-orbit states of the localized level of Cu2+ ions. All the studied samples had variable concentrations of oxygen and the possibility of the formation of auxiliary oxides is discussed. |
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Cuvinte-cheie ZnTe thin films, ion-exchange doping, polymorph structure, Cu2 defect level, straturi subțiri deZnTe, dopare cu schimb de ioni, structură polimorfă, nivel de defect Cu2 |
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