Infrared-to-visible up-conversion emissions and thermometric applications of Er
3+-doped Al
2
O
3 |
| |
| Authors: | B Dong XS Xu XJ Wang T Yang YY He |
| |
| Institution: | (1) School of Science, Dalian Nationalities University, Liaohe West road 18#, Dalian, 116600, P.R. China;(2) School of Materials Science and Engineering, Dalian University of Technology, Linggong road 2#, Dalian, 116024, P.R. China;(3) Department of Physics, Dalian Maritime University, Dalian, 116029, P.R. China;(4) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China |
| |
| Abstract: | Er3+-doped Al2O3 has been prepared by a sol–gel method, using aluminium isopropoxide Al(OC3H7)3]-derived Al2O3 sols with addition of erbium nitrate Er(NO3)3·5H2O]. The phase structure of θ-(Al,Er)2O3 phase was obtained for the 0.1 mol. % Er3+-doped Al2O3 at the sintering temperature of 1273 K. The green and red up-conversion emissions centered at about 523, 545 and 660 nm,
corresponding respectively to the 2
H
11/2, 4
S
3/2→4
I
15/2 and 4
F
9/2→4
I
15/2 transitions of Er3+, were detected by a 978-nm semiconductor laser diode excitation. The temperature dependence of green up-conversion emissions
was studied over a wide temperature range of 295–725 K, and reasonable agreement between the calculated temperatures obtained
by the fluorescence intensity ratio theory and the measured temperature was obtained, which proved that Er3+-doped Al2O3 has a good potential for the development of high-temperature sensors. It has some advantages compared to glasses due to its
higher thermal and mechanical resistance and allows measurements in a large temperature range.
PACS 78.55.Hx; 81.40.Tv |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
