Luminescent properties of divalent samarium-doped strontium hexaborate
Data(s) |
1999
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Resumo |
The valence change of samarium from trivalent to divalent in strontium hexaborate (SrB6O10) prepared in air is observed. The temperature dependence of the luminescence and vibronic transitions of Sm2+ are studied. The Sm2+ ions occupy three crystallographic sites. With increasing temperature, the D-5(0)-->F-7(0) transition line exhibits red shifts, and the half-width increases. At room temperature, due to the thermal population through the 4f(5)5d channel, the D-5(1)-->F-7(J) transitions are observed even though the vibrational energy is very close to the energy gap between the D-5(1) and D-5(0) levels in the host. A coupled phonon energy of about 108 cm(-1) is determined from the vibronic transitions of Sm2+ in the host. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zeng QH;Pei ZW;Wang SB;Su Q;Lu SZ.Luminescent properties of divalent samarium-doped strontium hexaborate,CHEMISTRY OF MATERIALS,1999,11(3):605-611 |
Palavras-Chave | #TETRABORATE #SPECTROSCOPY |
Tipo |
期刊论文 |