Effect of Single- and co-Dopant on TL of Sr2Mg(BO3)(2) Phosphor
Data(s) |
2009
|
---|---|
Resumo |
Sr2Mg(BO3)(2) thermoluminescence (TL) phosphor was synthesized by a high temperature solid state reaction and the effect of Li+, Bi3+, Gd3+ or Ti4+ as a codopant on TL of Sr2Mg(BO3)(2) : Dy was investigated. The results show that Li+ as a codopant improves the emission intensity of high temperature TL peak of Sr2Mg(BO3)(2) : Dy phosphor whereas the addition of Bi3+, Gd3+ or Ti3+ leads to the decrease of TL intensity. The TL emission bands of Sr2Mg(BO3)(2) : Dy phosphors with Li+, Bi3+, Gd3+ or Ti4+ as a codopant are situated at 480, 579, 662 and 755 nm, which were attributed to the characteristic F-4(9/2)-> H-6(15/2), F-4(9/2)-> H-6(13/2), F-4(9/2)-> H-6(11/2) and F-4(9/2)-> H-6(9/2) transitions of Dy3+ ion, consistent with the emission of Sr2Mg(BO3)(2) : Dy phosphors. The kinetics parameters of 234 degrees C TL peak of Sr2Mg(BO3)(2) Dy-0.04(3+), (Li-0.04(+)) phosphor with the values of trap depth E=1.1 eV, frequency factor s=6.3 x 10(9) s(-1) were estimated by a peak shape method, which obey the second order kinetics. |
Identificador | |
Idioma(s) |
中文 |
Fonte |
Liu LY;Li CY;Hao JQ;Tang Q;Zhang CX;Zhang YL;Su Q.Effect of Single- and co-Dopant on TL of Sr2Mg(BO3)(2) Phosphor,ACTA CHIMICA SINICA,2009,67(11):1201-1204 |
Palavras-Chave | #THERMOLUMINESCENCE CHARACTERISTICS #MGB4O7-DY #NA |
Tipo |
期刊论文 |