Enhanced upconversion emissions in Er3 doped perovskite BaTiO3 glass-ceramics via electric-stimulated polarization technique
Enhanced upconversion emissions in Er3 doped perovskite BaTiO3 glass-ceramics via electric-stimulated polarization technique
复制标题
通过电刺激偏振技术增强 Er3 掺杂钙钛矿 BaTiO3 玻璃陶瓷的上转换发射
DOI：
10.1016/j.ceramint.2018.11.239
复制
发表时间：
2019
影响因子：
5.2
通讯作者：
Zhang Junjie
中科院分区：
文献类型：
--
作者：
Xie Wenqing;Bai Gongxun;Cai Yangjian;Cai Muzhi;Tian Ying;Huang Feifei;Xu Shiqing;Zhang Junjie
本工作成功制备了高含量BaTiO3纳米钙钛矿Er3+掺杂铁电玻璃陶瓷。具有结构依赖性的光学行为表明，微晶玻璃中可调节的热条件对配体场的扰动有利于提高上转换效率，即绿光带(2H11/2,4S3/2→4I15/2)和红光带(4F9/2→4I15/2)的发射强度均成倍提高。并且已经研究了添加电压来刺激铁电域的极化反转作为扩大可见光范围内的发光发射的物理模式。与非偏振微晶玻璃相比，偏振样品可以获得1.5倍以上的发光强度。实现铁电材料上转换增强的多种机制将刺激和扩大创新光电器件的使用。
In this work, Er3+doped ferroelectric glass ceramics containing high-content BaTiO3nanoperovskite have been prepared successfully. Optical behaviors with structural dependence indicate that the perturbation of ligand field by tunable thermal condition in glass-ceramics is beneficial to boost upconversion efficiency, that is, the emission intensity possesses multifold improvement in both green band (2H11/2,4S3/2→4I15/2) and red band (4F9/2→4I15/2). And adding voltage to stimulate polarization reversal of ferroelectric domains has been investigated as a physical mode to broaden luminescence emissions in visible range. Compared with the unpolarized glass-ceramics, over 1.5 folds higher luminescence intensity can be obtained by polarizing the samples. The multiple mechanisms to achieve upconversion enhancement in ferroelectric materials will stimulate and expand the use of innovative optoelectronic devices.