论文部分内容阅读
使用溶胶–凝胶法成功制备了稀土离子(Eu~(3+)或Tb~(3+))掺杂的SrB_6O_(10)发光材料,研究了SrB_6O_(10):RE(RE=Eu~(3+),Tb~(3+))发光材料在真空紫外(VUV)光激发下的发光性质。通过对样品激发光谱的分析,发现SrB_6O_(10):RE(RE=Eu~(3+),Tb~(3+))在真空紫外区域有1个较强的基质吸收峰,这表明SrB_6O_(10):RE(RE=Eu~(3+),Tb~(3+))在VUV激发时有较好的发光效果。SrB_6O_(10):Eu~(3+)和SrB_6O_(10):Tb~(3+)样品的淬灭浓度分别达到30%和25%。SrB_6O_(10):Eu~(3+)与商用KX–504A粉[(Y,Gd)BO_3:Eu~(3+)]相比具有更好的色纯度;而SrB_6O_(10):Tb~(3+)与商用粉Zn2Si O_4:Mn2+(KX–502)相比余晖时间更短。
SrB_6O_ (10) luminescent materials doped with rare earth ions (Eu 3+ or Tb 3+) were successfully prepared by sol-gel method. The effects of SrB 6 O 10: RE (RE = Eu ~ 3 +), Tb ~ (3+) luminescent materials under vacuum ultraviolet (VUV) light excitation. The excitation spectra of SrB 6 O 10: RE (RE = Eu ~ (3 +) and Tb ~ (3+)) show a strong absorption peak in the vacuum ultraviolet region, which indicates that SrB_6O_ 10): RE (RE = Eu ~ (3 +), Tb ~ (3+)) has better luminescence effect at VUV excitation. The quenching concentrations of SrB_6O_ (10): Eu ~ (3+) and SrB_6O_ (10): Tb ~ (3+) reached 30% and 25% respectively. SrB_6O_ (10): Eu ~ (3+) has better color purity than commercial KX-504A powder [(Y, Gd) BO_3: Eu ~ (3+)]; 3+) has a shorter afterglow time than the commercially available Zn2Si O_4: Mn2 + (KX-502).