摘要
通过水热反应成功制备了系列纳米发光材料Y1.95-xB ixEu0.05O3(0≤x≤0.15).B i3+掺杂后,Y2O3:Eu3+在342 nm处产生了一个由B i-O带引起的激发带;此外,Y2O3:Eu3+掺杂2 mol%B i3+后与未掺杂B i3+的Y2O3:Eu3+相比,发光强度增加了约1.33倍,这是由于B i3+充当了敏化剂离子,传输能量给激活剂Eu3+.基于在218、342、469 nm激发波段的Y1.93B i0.02Eu0.05O3发射光谱,发现与敏化剂B i3+相比,Y2O3主晶格更能有效地传输能量给激活剂Eu3+.此外,工艺条件(pH和退火温度)对Y1.93B i0.02Eu0.05O3荧光性质的影响也进行了研究.
Bi3＋ doped Y2O3 ： Eu3 ＋ with formula Y1.95-x Bix Eu0.05 O3 （0≤ x≤ 0. 15 ） was synthesized by hydrothermal reaction. Doped - Bi3 ＋ results in a new activation band centered at 342 nm due to the extra Bi - O activation, and the luminescence intensity of Y2O3 ：Eu3＋ with addition of 2 mol% Bi3＋ was increased by as much as 1.33 times compared with the Bi3＋ ions-free Y2O3： Eu3＋ sample, which was interpreted that Bi3＋ , acting as a sensitizer ion, could transfer energy to activator Eu3＋ Based on the emission spectra of Y 1. 93 Bi0.02 Eu0.05O3 with the excitation wavelengths of 218, 342 and 469 nm, it could be suggested that Y2O3 host lattice could more efficiently transfer energy to activator Eu3＋ than the sensitizer Bi3＋ could do. In addition, the effects of processing conditions, such as the pH and sintering temperature, on the fluorescence properties of the Y 1. 93 Bi0. 02 Eu0. 05 O3 also were investigated.
出处
《安徽大学学报（自然科学版）》
CAS
北大核心
2010年第5期49-53,73,共6页
Journal of Anhui University(Natural Science Edition)
基金
安徽省高等学校省级自然科学基金重点资助项目(KJ2010A012)
安徽省信息材料与器件重点实验室开放基金资助项目
国家自然科学基金资助项目(50872001)
