Synthesis and luminescence characteristics of terbium(Ⅲ) activated NaSrBO_3
Synthesis and luminescence characteristics of terbium(Ⅲ) activated NaSrBO_3作者机构:Department of Physics SGB Amravati University Amravati-444602 (M.S.) India
出 版 物:《Journal of Rare Earths》 (稀土学报(英文版))
年 卷 期:2012年第30卷第9期
页 面:856-859页
核心收录:
学科分类:0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0703[理学-化学] 070301[理学-无机化学]
基 金:University Grants Commission UGC
主 题:thermoluminescence photoluminescence terbium NaSrBO3 combustion synthesis rare earths
摘 要:The thermoluminescence (TL) and photohmainescence (PL) properties of the phosphor NaSrBO3:Tb3+ were reported and discussed. The combustion technique was used for the synthesis of polycrystalline samples of NaSrBO3:Th3+. The TL glow curve of the compound had a simple structure with a single peak at 434 K. TL sensitivity of the phosphor was found to be more than that of (LiF:Mg,Cu,P). The TL glow curve was studied as a function of concentration of dopant and dose of gamma ray irradiation. The kinetic parameters of the thermolumines- cence of NaSrBO3: Tb3+were calculated employing the peak shape method. The photoluminescence (PL) properties of Tb3+ doped in NaS- rBO3 were studied over the 200-400 nm excitation range. The excitation spectra of NaSrBO3:Tb3+ consisted of single narrow band peaking at about 236 nm. The emission spectra monitored at 236 nm excitation consisted of a series of sharp lines peaking at 489, 544, 586 and 622 nm corresponding to the 5D4→7Fj (j=3,4,5,6) transitions within the 4f8 configurations of Tb3+.