Synthesis and luminescence characteristics of terbium(Ⅲ) activated NaSrBO_3  

作　　者：P.A. Nagpure S.K. Omanwar 

机构地区：[1]Department of Physics, SGB Amravati University, Amravati-444602 (M.S.), India

出　　处：《Journal of Rare Earths》2012年第9期856-859,共4页稀土学报（英文版）

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＋.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＋.

关 键 词：THERMOLUMINESCENCE PHOTOLUMINESCENCE TERBIUM NaSrBO3 combustion synthesis rare earths 

分 类 号：O614.112[理学—无机化学]