Luminescence and energy transfer in Er³⁺/Nd³⁺ ion-codoped Ge-In-S-CsBr chalcohalide glasses

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• 作者：Yinsheng Xu ; Jiani Qi ; Jing Ren ; Guorong Chen ; Fei Huang ; Yangyuan Li ; Shanshan Lu ; Shixun Dai
• 关键词：A. Glasses ; A. Optical materials ; A. Chalcogenides ; D. Luminescence
• 刊名：Materials Research Bulletin
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：48
• 期：11
• 页码：4733-4737
• 全文大小：626 K

文摘

This study investigates the emission properties of the Er³⁺/Nd³⁺ ions codoped 70GeS₂-10In₂S₃-20CsBr chalcohalide glasses. The vacuumed melt-quenching technique is employed to synthesize the glasses. The absorption spectra, upconversion and near-IR emission spectra as well as fluorescence decay curves are collected. With the increasing concentration of Er³⁺ ions, the lifetimes at 1073 nm for Nd³⁺ ions decrease from 538 to 420 ¦Ìs under 808 nm excitation. Meanwhile, the lifetimes at 1540 nm for Er³⁺ ions decrease from 245 to 214 ¦Ìs with the increasing concentration of Nd³⁺ ions. The emission spectra and lifetimes show that energy transfer exists between the Nd³⁺ and Er³⁺ ions. The luminescence and detailed energy transfer mechanisms are schematically proposed.