Spectral and temperature characteristics of Cs2Na(Er, Yb, Y)Cl6 upconverters
Spectral and temperature characteristics of Cs2Na(Er, Yb, Y)Cl6 upconverters
复制标题
DOI：
10.1016/0022-2313(85)90014-6
复制
发表时间：
1985-04
影响因子：
3.6
通讯作者：
Z. Mazurak;E. Łukowiak;B. Jeżowska-Trzebiatowska
中科院分区：
文献类型：
--
作者：
Z. Mazurak;E. Łukowiak;B. Jeżowska-Trzebiatowska
测量了Cs2 Na（Er，Yb，Y）Cl 6型上转换晶体在300-650 K范围内的光谱发光特性.在绿色区域中观察到上转换器的发射强度降低了近六倍。该发射对应于Er 3+离子的两个发光跃迁：2 H112 → 4 I152和4S 32 → 4 I152。提出了发光强度下降的机理，即Er 3+离子被激发到4 I92能级，从而使4S 32能级退激发到4 I132能级。
Spectral luminescence characteristics of the Cs 2 Na (Er, Yb, Y) Cl 6 type upconverter have been measured in the range 300–650 K. A nearly sixfold decrease of the emission intensity of an upconverter was observed in the green area. This emission corresponds to two luminescence transition of Er 3+ ions: 2 H 11 2→ 4 I 15 2 and 4 S 3 2→ 4 I 15 2. A mechanism of the luminescence intensity decrease has been proposed, in which deexcitation of the 4 S 3 2 level to the 4 I 13 2 level is caused by a neighbouring Er 3+ ion being excited to the 4 I 9 2 level.