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 SM ISO690:2012UNTILA, Dumitru, KANTSER, Valeriu, CARAMAN, Mihail, EVTODIEV, Igor, LEONTIE, Liviu, DMITROGLO, Liliana. Photoluminescence properties of lamellar nano-composites obtained by Cd intercalation of GaSe and GaSe: Eu single crystals. In: Physica Status Solidi (C) Current Topics in Solid State Physics, 2015, vol. 12, pp. 65-69. ISSN 1862-6351. DOI: https://doi.org/10.1002/pssc.201400127 |
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 Physica Status Solidi (C) Current Topics in Solid State Physics |
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| Volumul 12 / 2015 / ISSN 1862-6351 /ISSNe 1610-1642 | |
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| DOI:https://doi.org/10.1002/pssc.201400127 | |
| Pag. 65-69 | |
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In this work surface morphology, composition and photoluminescence at 293 K and 78 K, of composite obtained by intercalation of GaSe and GaSe:Eu (0.49 at.% and 1.00 at.%) single crystal lamellas with Cd from vapor phase at 753 K and 830 K are investigated. As-obtained composite consists of CdSe and microstructured GaSe single crystallites. Photoluminescence spectrum of GaSe:Eu single crystal lamellas is composed of Eu3+ emission band 5D0 → 7F1, 5D0 → 7F2 and 5D1 → 7F3 transitions) and indirect exciton line in GaSe crystallites. Emission spectrum of single crystalline GaSe-CdSe composite, at 78 K and 293 K, consists of donor-acceptor band in GaSe microcrystallites and emission band of CdSe crystallites. Composite derived from the intercalation of GaSe:Eu (0.49 at.%) single crystals with Cd exhibits strong visible luminescence. Its quasi-continuous photoluminescence spectrum is produced by superposition of luminescent emissions of CdSe nano- and microparticles, and microstructured GaSe. |
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| Cuvinte-cheie Composite materials, intercalation, layered semiconductors, Luminescence, Rare earths |
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