微波水热法制备铋铕共掺杂氧化钇磷光粉  

Bi and Eu-codoped Y_2O_3 Phosphor Prepared by Microwave Hydrothermal Processing and Its Luminescent Properties

作　　者：王烨文[1] 陈毅彬[1] 曾人杰[1] 

机构地区：[1]厦门大学材料学院,福建厦门361005

出　　处：《发光学报》2009年第2期174-178,共5页Chinese Journal of Luminescence

基　　金：福建省重大专项基金(2005HZ02-2)资助项目

摘　　要：用微波水热法制备化学计量比为(Y0.94-x,Eu0.06,Bix)2O3(x=0,0.01～0.06)的铋铕共掺杂氧化钇磷光粉。用XRD、SEM、EDS、荧光光谱及HRTEM等进行表征。结果表明:该系统由于铋的加入使(211)晶面的生长受到抑制;在激发波长346 nm时,由于铋的掺入使发光增强;随铋掺杂量的增加,其发光先增强后减弱,并在x=0.03时有最大值;因此该系统可作为320～375 nm的近紫外(如白光LED及高压汞灯)激发用磷光粉。该系统在激发波长为254 nm时,铋的加入使发光强度减弱;因此该系统不适合用于低压汞灯。（Y0.94-x, Eu0.06, Bix ） 2O3（x = 0, 0.01-0.06） phosphor powders hydrothermal processing. The powders were characterized by XRD, SEM, EDS, were prepared by microwave photoluminescence and HR- TEM. The growth of the crystal face （211） was restrained, resulting from Bi doping the emission spectra was generally enhanced when excited with 346 nm owing to Bi probably. The intensity of doping. It was raised first and then declined later on, and achieved a maximum when x = 0.03, indicating that the phosphor powders can serve in near-UV band of 320- 375 nm excitation, for example, for white LED and high pressure mercury dis- charge lamps. The intensity of the emission spectra was generally weakened when excited with 254 nm due to Bi doping, suggesting that the phosphor powders as mentioned are not suitable for the low-pressure mercury discharge lamps.

关 键 词：微波水热 铋铕共掺杂氧化钇 荧光粉 敏化 

分 类 号：O482.31[理学—固体物理]