Persistent luminescence fading in Sr2MgSi2O7:Eu2+,R3+ materials: a thermoluminescence study
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
12/10/2013
12/10/2013
2012
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| Resumo |
The fading of persistent luminescence in Sr2MgSi2O7:Eu2+,R3+ (R: Y, La-Nd, Sm-Lu) was studied combining thermoluminescence (TL) and room temperature (persistent) luminescence measurements to gain more information on the mechanism of persistent luminescence. The TL glow curves showed the main trap signal at ca. 80 degrees C, corresponding to 0.6 eV as the trap depth, with every R co-dopant. The TL measurements carried out with different irradiation times revealed the general order nature of the TL bands. The results obtained from the deconvolutions of the glow curves allowed the prediction of the fading of persistent luminescence with good accuracy, though only when using the Becquerel decay law. (C) 2012 Optical Society of America Turku University Foundation Turku University Foundation Jenny and Antti Wihuri Foundation (Finland) Jenny and Antti Wihuri Foundation (Finland) Academy of Finland [117057/2000, 123976/2006, 134459/2009, 137333/2010] Academy of Finland CAPES (Brazil) CAPES (Brazil) |
| Identificador |
OPTICAL MATERIALS EXPRESS, WASHINGTON, v. 2, n. 3, pp. 287-293, 36951, 2012 2159-3930 http://www.producao.usp.br/handle/BDPI/34233 10.1364/OME.2.000287 |
| Idioma(s) |
eng |
| Publicador |
OPTICAL SOC AMER WASHINGTON |
| Relação |
OPTICAL MATERIALS EXPRESS |
| Direitos |
closedAccess Copyright OPTICAL SOC AMER |
| Palavras-Chave | #MATERIALS SCIENCE, MULTIDISCIPLINARY #OPTICS |
| Tipo |
article original article publishedVersion |
