Displacement and luminescence of Eu3+ in CaYBO4
Data(s) |
2000
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Resumo |
CaY1-xBO4: xEu was synthesied by solid state reaction method, and the displacement and luminescence of the Eu3+ in CaYBO4 host were studied. Two luminescent centers could be observed at certain Eu3+-concentration, indicating that the Eu3+ occupies two different crystallographic sites. This result shows that the Eu3+ occupies two different Y3+ sites in CaYBO4. The investigation on Eu-O charge transfer bands indicates that the larger distortion or the lower symmetry of Eu3+ site is,the shorter wavelength of the Eu-O charge transfer band is. When the Eu3+-concentration is high (x > 0.10), Eu3+ occupies the sites of Ca2+ and is reduced to Eu2+. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zeng XQ;Hong GY;You HP;Kim CH.Displacement and luminescence of Eu3+ in CaYBO4,JOURNAL OF RARE EARTHS,2000,18(3):182-185 |
Palavras-Chave | #EFFICIENCY #OXIDES |
Tipo |
期刊论文 |