Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 579, Issue -, Pages 27-30Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.05.058
Keywords
Downconversion; Luminescence; Energy transfer; Tellurite glass; Quantum efficiency
Categories
Funding
- National Natural Science Foundation of China [20903123]
- Key Project of Chinese Ministry of Education [211154]
- Natural Science Foundation Project of Chongqing [2012JJA90019, CSTCjjA1425]
Ask authors/readers for more resources
The different concentration of Tb3+/Yb3+ co-doped tellurite glasses were prepared by high-temperature melting-quenching method. The near-infrared (NIR) luminescence of co-doped samples upon the excitation of Tb3+ ions with a green visible photon at 484 nm was investigated, and two NIR photons could be emitted by Yb3+ (F-2(5/2) -> F-2(7/2)) through cooperative energy transfer from Tb3+ to two Yb3+ ions. On the other hand, the Yb3+ co-doped concentration dependence on the visible and NIR emissions, decay lifetimes and quantum efficiencies from the downconversion have been studied. The NIR quantum efficiency achieved 172% before the concentration quenching threshold. (c) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available