稀土铕、镨掺杂钛酸锌红色荧光粉的制备及其发光性能研究  

Synthesis and Photoluminescence Properties of ZnTiO_3∶ RE(RE = Eu^(3+)、Pr^(3+)) Red Phosphors

作　　者：李梦婷[1,2] 焦宝祥[2] 杨润放 游璐[2] 

机构地区：[1]江苏大学,材料科学与工程学院,镇江212013 [2]盐城工学院材料工程学院,盐城224051

出　　处：《中国陶瓷》2015年第10期23-28,共6页China Ceramics

基　　金：江苏省教育厅高校自然科学重大基础研究项目(12KJA430006;12KJB430024)

摘　　要：利用溶胶-凝胶法(sol-gel)分别制备了稀土铕掺杂钛酸锌和镨掺杂钛酸锌粉体,通过X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FT-IR)、透射电子显微镜(TEM)以及荧光分光光度计(PL)对样品的结构、形貌及发光性能进行了表征。结果表明,Eu3+掺杂钛酸锌呈六方相偏钛酸锌,而Pr3+掺杂钛酸锌呈现六方相偏钛酸锌和立方相正钛酸锌。荧光分析表明,Eu3+浓度在0~3.0%研究范围内,其发光强度随Eu3+浓度的增加先增强后降低,最大发光强度为1.5%;Pr3+浓度在0~0.5%研究范围内,其发光强度随Pr3+浓度的增加先增强后降低,最大发光强度为0.3%,且Eu3+掺杂钛酸锌的红光发射强度远比Pr3+大。研究表明铕掺杂钛酸锌荧光粉可作为一种潜在的白光LED用红色荧光粉。Zn Ti O3∶ Eu^3＋ and ZnTiO3∶ Pr^3＋ phosphors were synthesized through sol-gel method. The synthesized powders was characterized by XRD, FT-IR, TEM and photoluminescence spectroscopy. The results showed that the ZnTiO3∶ Eu^3＋ phosphors were hexagonal ZnTiO3 and ZnTiO3∶ Pr^3＋ phosphors were hexagonal ZnTiO3 and cubic Zn2TiO4. The photoluminescence（PL） results indicated that 1.5% Eu^3＋ doped ZnTiO3 showed the strongest luminescent intensity with Eu^3＋ concentrations range from 0 ～ 3.0%. And 1.3% Pr^3＋ doped ZnTiO3 showed the strongest luminescent intensity with Pr^3＋ concentrations range from 0 ～ 0.5%. Moreover, the red luminescent intensity of Eu^3＋ ions was far stronger than that of Pr^3＋ ions. The luminescence properties suggested that ZnTiO3∶ Eu^3＋ phosphors may be regarded as a potential red phosphor candidate for light emitting diodes（LEDs）.

关 键 词：铕 镨 钛酸锌 发光 

分 类 号：TN304.91[电子电信—物理电子学]