Affiliation:
1. Chuzhou University
2. Huaiyin Normal University
Abstract
SiO2-SnO2:Er3+ thin films co-doped with Yb3+ ions have been prepared by the sol-gel method. By controlling the Yb3+ concentration, the enhanced Er3+-related near infrared (NIR) emission is achieved under 325 nm excitation. The energy transfer efficiency (ETE) from SnO2 to rare earth is investigated by photoluminescence decay curves. It is found that with the increase of Yb3+ ion concentration to 15 mol%, the ETE gradually increases to ∼68.7%. The comprehensive spectroscopic analysis results demonstrate that both improved ETE and a new energy transfer channel from SnO2 nanocrystals to Er3+ ions via the Yb3+ intermediate state contribute to the Er3+-related NIR emission enhancement.
Funder
Natural Science Research of Jiangsu Higher Education Institutions of China
Natural Science Foundation of Jiangsu Province
University Natural Science Research Project of Anhui Province
National Natural Science Foundation of China
National Key Research and Development Program of China
Subject
Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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