Red and green nanocomposite phosphors prepared from porous GaAs templates
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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

Red and green nanocomposite phosphors prepared from porous GaAs templates

DOI:https://doi.org/10.1088/1464-4258/9/4/015

Pag. 401-404

Sirbu Lilian1, Ursachi Veaceslav2, Tiginyanu Ion12, Dolgaleva Ksenia3, Boyd Robert W.3
 
1 Technical University of Moldova,
2 Institute of Applied Physics, Academy of Sciences of Moldova,
3 University of Rochester
 
 
Disponibil în IBN: 23 august 2023


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.

Cuvinte-cheie
photoluminescence, porous materials, X-ray diffraction

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<dc:creator>Sîrbu, L.</dc:creator>
<dc:creator>Ursachi, V.V.</dc:creator>
<dc:creator>Tighineanu, I.M.</dc:creator>
<dc:creator>Dolgaleva, K.P.</dc:creator>
<dc:creator>Boyd, R.</dc:creator>
<dc:date>2007-04-01</dc:date>
<dc:description xml:lang='en'><p>Rare-earth-containing oxide nanocomposites are prepared in a controlled fashion from porous GaAs templates. The initial porous GaAs network is replaced by a &beta;-Ga<sub>2</sub>O<sub>3</sub>&nbsp;one during annealing at temperatures from 500 to 900 &deg;C. The impregnation of Eu and Er lanthanides from EuCl&nbsp;<sub>3</sub>:C<sub>2</sub>H<sub>5</sub>OH and ErCl<sub>3</sub>:C&nbsp;<sub>2</sub>H<sub>5</sub>OH solutions results in the formation of xenotime EuAsO<sub>4</sub>&nbsp;and ErAsO<sub>4</sub>&nbsp;microcrystals finely dispersed into the native oxide matrix. The 4f-4f intrashell transitions in Eu<sup>3+</sup>&nbsp;and Er<sup>3+</sup>&nbsp;ions ensure red and green emission from EuAsO<sub>4</sub>&nbsp;and ErAsO<sub>4</sub>&nbsp;nanophases. These nanocomposites may prove useful in future generations of optoelectronic and photonic devices.</p></dc:description>
<dc:identifier>10.1088/1464-4258/9/4/015</dc:identifier>
<dc:source>Journal of Optics (United Kingdom)  () 401-404</dc:source>
<dc:subject>photoluminescence</dc:subject>
<dc:subject>porous materials</dc:subject>
<dc:subject>X-ray diffraction</dc:subject>
<dc:title>Red and green nanocomposite phosphors prepared from porous GaAs templates</dc:title>
<dc:type>info:eu-repo/semantics/article</dc:type>
</oai_dc:dc>