Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
640 0 |
SM ISO690:2012 SIRBU, Lilian, URSAKI, Veacheslav, TIGINYANU, Ion, DOLGALEVA, Ksenia, BOYD, Robert W.. Red and green nanocomposite phosphors prepared from porous GaAs templates. In: Journal of Optics A: Pure and Applied Optics, 2007, vol. 9, pp. 401-404. ISSN 1464-4258. DOI: https://doi.org/10.1088/1464-4258/9/4/015 |
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Journal of Optics A: Pure and Applied Optics | |||||
Volumul 9 / 2007 / ISSN 1464-4258 /ISSNe 1741-3567 | |||||
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DOI: https://doi.org/10.1088/1464-4258/9/4/015 | |||||
Pag. 401-404 | |||||
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Rare-earth-containing oxide nanocomposites are prepared in a controlled fashion from porous GaAs templates. The initial porous GaAs network is replaced by a β-Ga2O3 one during annealing at temperatures from 500 to 900 °C. The impregnation of Eu and Er lanthanides from EuCl 3:C2H5OH and ErCl3:C 2H5OH solutions results in the formation of xenotime EuAsO4 and ErAsO4 microcrystals finely dispersed into the native oxide matrix. The 4f-4f intrashell transitions in Eu3+ and Er3+ ions ensure red and green emission from EuAsO4 and ErAsO4 nanophases. These nanocomposites may prove useful in future generations of optoelectronic and photonic devices. |
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Cuvinte-cheie photoluminescence, porous materials, X-ray diffraction |
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