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铒镱双掺氧化镥钆透明陶瓷的制备及发光特性
作者:代雨航 李剑 朱忠丽 
单位:长春理工大学化学与环境工程学院 长春 130022 
关键词:铒镱掺杂氧化镥钆 冷等静压–真空烧结技术 上转换光谱 
分类号:TQ133.3
出版年,卷(期):页码:2017,45(7):941-947
DOI:
摘要:

 采用柠檬酸燃烧法,1 000 ℃煅烧2 h得到Gd3+掺杂量为25%(摩尔分数,下同)的Er,Yb:(LuGd)2O3陶瓷粉体。研究了Er3+、Yb3+掺杂量对粉体发光强度的影响。粉体的发光性能表明,掺杂量为4%Er3+和5%Yb3+的粉体样品的激发和发射光谱强度最大,在563和661 nm处有较强的发射峰,对应Er3+的4S3/2/2H11/2→4I15/2跃迁和4F9/2→4I15/2跃迁。采用掺杂量分别为4%Er3+、5%Yb3+和25%Gd3+在1 000 ℃煅烧的Er,Yb:(LuGd)2O3粉体作为原料,用冷等静压–真空烧结技术在1 800 ℃烧结20 h制备出Er,Yb:(LuGd)2O3陶瓷,尺寸为 10 mm×l mm陶瓷样品的平均透过率为68.7%。陶瓷样品的上转换发射峰强度高于粉体样品。

 

 Er,Yb:(LuGd)2O3 ceramic powders were prepared by a citric acid combustion method at Gd3 + doping amount of 25% (in mole fraction) and 1 000 °C for 2 h. The effects of Er3+ and Yb3+ doping amounts on the luminescence intensity of the powders were investigated. The luminescent properties of the powders show that the powder sample doped with 4%Er3+ and 5%Yb3+ has the most intense excitation and emission spectra, two intense emission bands are located at 563 and 661 nm, which are corresponding to the 4S3/2/2H11/2→4I15/2 and 4F9/2→4I15/2 level transition of Er3+, respectively. The Er,Yb:(LuGd)2O3 ceramics were prepared via cold isostatic–vacuum sintering at 1 800 °C for 20 h using Er,Yb:(LuGd)2O3 ceramic powders doped with 4%Er3+, 5%Yb3+ and 25%Gd3+ calcinated at 1 000 °C as raw materials. The Er,Yb:(LuGd)2O3 ceramic sample fabricated is 10 mm in diameter and 1 mm in thickness, and the average transmittance is 68.7%. The upconversion emission intensity of the ceramic samples is greater than that of the powder samples.

 
基金项目:
吉林省科技发展计划项目(20170204028GX)
作者简介:
代雨航(1993—),女,硕士研究生。
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