纳米基掺Eu3+离子复合材料的光学性质

量子电子学报 , 2004, 21(3): 376-380. doi: 10.3969/j.issn.1007-5461.2004.03.019

纳米基掺Eu3+离子复合材料的光学性质

熊大元 ^1, , 曾小青 ^2, , 林凤英 ^3, , 袁绥华 ^4, , 刘煜炎 ^5,

1.华东师范大学物理系光谱学与波谱学教育部重点实验室,上海,200062

2.中国科学院上海光学精密机械研究所,上海,201800

3.中国科学院上海光学精密机械研究所,上海,201800

4.西南师范大学物理系,重庆,400715

5.华东师范大学物理系光谱学与波谱学教育部重点实验室,上海,200062

基金项目: 国家自然科学基金(10174020,60087002) 上海市学科科研项目

关键词：光电子学 , 纳米多孔玻璃 , 掺Eu3+的复合材料 , 电子转移 , 量子尺寸效应

Optical properties of nano-composite material doped with Eu3+

研究了纳米多孔玻璃中的掺Eu3+离子的YOCl固体粉末和EuCl3溶液的光谱性质.与普通的YOCl荧光粉末相比,纳米基YOCl:Eu3+粉末中Eu3+的电偶极跃迁5D0 →7F2的发射光谱被展宽,同时蓝移7 nm;Eu3+的5Do→7F1跃迁与5D0→7F2跃迁的相对强度之比在两种激发波长(254 nm及393 nm)下均得以增大.与普通的EuCl3的溶液相比,纳米基溶液不具有典型的小尺寸效应及量子限域效应,但Eu3+高能级的激发态引起的发光得以增强.由于这种复合方法同时吸收了纳米多孔玻璃形状一定、机械强度高等优点,这种基于纳米微孔玻璃的复合材料有望发展成为一种新型实用光学材料.

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