Improvement of Er3+:4I11/2→Ce3+:2F5/2 energy transfer rate in Er3+/Ce3+ co-doped TeO2–ZnO–Na2O–Nb2O5 glasses

Autor:	Jun Wang, Shanglian Huang, Tiefeng Xu, Qiuhua Nie, Shixun Dai, Yaxun Zhou
Rok vydání:	2009
Předmět:	Chemistry Energy transfer Phonon energy Biophysics Analytical chemistry Mineralogy General Chemistry Condensed Matter Physics Biochemistry Fluorescence Atomic and Molecular Physics and Optics Photon upconversion Fluorescence intensity Quantum efficiency Energy transfer rate Co doped
Zdroj:	Journal of Luminescence. 129:1-5
ISSN:	0022-2313
Popis:	The B2O3 component was introduced into Er3+/Ce3+ co-doped TeO2–ZnO–Na2O–Nb2O5 glass to improve energy transfer rate of Er3+:4I11/2→Ce3+:2F5/2 phonon-assisted cross-relaxation process. With the 6 mol% substitution of B2O3 for TeO2, the energy transfer rate increased from 1300 to 1831 s−1 and the fluorescence intensity increased by about 13.4%. However, the more B2O3 substitution in the same glass system reduced the quantum efficiency of Er3+:4I13/2→4I15/2 transition due to the higher OH− group concentration. The results show that an appropriate amount of B2O3 component can be used to improve the phonon-assisted energy transfer rate and enhance 1.53 μm fluorescence emission by increasing the phonon energy of host glass. The effect of B2O3 on the energy transfer process, the lifetimes of the 4I11/2 and 4I13/2 levels, and the upconversion emission have also been investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::505439f27e214a932040a0927cb6cc3e https://doi.org/10.1016/j.jlumin.2008.05.018 Zobrazit plný text záznamu Full Text from ScienceDirect