Ce_xGd_(1-x)P_5O_(14)晶体的生长及其发光特性的光谱研究  

Growth and Spectral Study on Luminescence Characteristics of Ce_xGd_((?)-x)P_5O_(14) Crystals

作　　者：洪广言[1] 王文韵[1] 于德才[1] 廖永忠 李有谟[1] 崔海宁[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《人工晶体学报》1993年第1期6-10,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金;长春物理所激发态物理开放实验室资助

摘　　要：本文采用蒸发溶液法生长出一系列 Ce_xGd_(1-x)P_5O_(14)晶体,测定了它们的结构均属于单斜晶系、空间群 P2_1/c,用稳态和时间分辨荧光光谱法研究了该晶体中不同 Gd 含量时的发光性能,观察到随着(1-x)值增加,包含有 Gd^(3+)发射在内的314nm 峰增强和 Ce^(3+)的荧光寿命的有规律递减,说明了存在着 Ce^(3+)至 Gd^(3+)的能量传递。A series of Ce_xGd_(1_x)P_5O_(14) crystals have been grown from pho-sphoric acid solutions by evaporation method.Their crystal structure belong tomonoclinie system with space group P2_(?)/c,steady-state and time-resolvedfluorescence spectroscopy were used to investigate the luminescence properties ofcrystals with different Gd contents.It has been observed that with increasing1-x value in the composition of crystals,the emission intensity of 314 nm bandincreases and the fluorescence lifetime of Ce^(3+) monotonically decreases,indi-cating the energy transfer from Ce^(3+) to Gd^(3+).

关 键 词：晶体生长 光谱 铈 钆 

分 类 号：O614.332[理学—无机化学]