Effects of Li+ Doping Concentration on Structure and Photoluminescence of the Y2O3: Ho3+/Yb3+  Up-conversion Film

Min Sun; Wenbo Hou; Juncheng Liu; Lifang Nie

doi:10.9734/ajopacs/2019/v7i130087

Research Article Open access CC BY 4.0

Effects of Li+ Doping Concentration on Structure and Photoluminescence of the Y2O3: Ho3+/Yb3+ Up-conversion Film

Min Sun, Wenbo Hou, Juncheng Liu, Lifang Nie

Asian Journal of Physical and Chemical Sciences · pp. 1–8 · Published 27 Mar 2019

10.9734/ajopacs/2019/v7i130087

Abstract

The Li+ co-doped Y2O3: Ho3+/Yb3+ films were prepared with sol-gel method and spin-coating technique. The effects of Li+ on the structure and luminescent properties of the films were investigated. The results show the grain size increased first and then decreased with the increase of Li+ doping concentration. The crystal size of particles composing the film got the maximum value when Li+ concentration took 4 mol%. As Li+ doping concentration increased, the optical transmittance of the Y2O3: Ho3+/Yb3+ film improved at first then reduced and got the maximum at 3 mol%. Excited with a 980-nm laser, there were two green emissions in the up-conversion emission spectra, one centered at 535 nm, the other at 550 nm, which ascribed to the 5F4→5I8 and 5S2→5I8 transitions of Ho3+, respectively. The up-conversion luminescence intensity also increased firstly and then decreased with the Li+ doping concentration increase, and got the highest value at 2 mol%.

Photoluminescence sol-gel Y2O3 film Ho3 /Yb3 up-conversion.

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Min Sun, Wenbo Hou, Juncheng Liu, Lifang Nie (2019). Effects of Li+ Doping Concentration on Structure and Photoluminescence of the Y2O3: Ho3+/Yb3+ Up-conversion Film. Asian Journal of Physical and Chemical Sciences , 1–8. https://doi.org/10.9734/ajopacs/2019/v7i130087

Affiliations

Min Sun — School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Wenbo Hou — School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Juncheng Liu — School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
Lifang Nie — School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.

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