Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624076 | Ceramics International | 2016 | 21 Pages |
Abstract
Usually, Er3+ doping concentration effect on the temperature sensing properties of Er3+ containing materials is ignored. In this work, we demonstrated the influence of Er3+ concentration and excitation path on the spectral and temperature sensing properties in Er3+, Yb3+ co-doped NaGdTiO4 system. The NaGdTiO4: Er3+/Yb3+ phosphors were prepared by a high temperature solid state reaction method. Different spectral patterns for down- and up-conversion processes were observed and ascribed to the different excitation and population routes. The concentration quenching behaviors for down- and up-conversion processes were explained via cross relaxations between Er3+ ions. Most importantly, the Er3+ concentration dependent optical temperature sensing performance was observed and experimentally explained as a fact that the optical transition rate of Er3+ in different samples was changed with various Er3+ doping concentration.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Xiangping Li, Xin Wang, Hua Zhong, Lihong Cheng, Sai Xu, Jiashi Sun, Jinsu Zhang, Xuejing Li, Lili Tong, Baojiu Chen,