Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
130 0 |
SM ISO690:2012 SIRBU, Lilian, URSACHI, Veaceslav, TIGINYANU, Ion, DOLGALEVA, Ksenia, BOYD, Robert W.. Red and green nanocomposite phosphors prepared from porous GaAs templates. In: Journal of Optics (United Kingdom), 2007, vol. 9, pp. 401-404. ISSN 2040-8978. DOI: https://doi.org/10.1088/1464-4258/9/4/015 |
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Journal of Optics (United Kingdom) | ||||||
Volumul 9 / 2007 / ISSN 2040-8978 /ISSNe 2040-8986 | ||||||
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DOI:https://doi.org/10.1088/1464-4258/9/4/015 | ||||||
Pag. 401-404 | ||||||
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Rezumat | ||||||
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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