Upconversion luminescence properties of Er3+ doped GeS2-Ga2S3-KCl chalcohalide glasses
Upconversion luminescence properties of Er3+ doped GeS2-Ga2S3-KCl chalcohalide glasses
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DOI：
10.1007/s12598-011-0189-5
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发表时间：
2011-02
期刊：
影响因子：
8.8
通讯作者：
Jihong Zhang;H. Tao;Xiujian Zhao
中科院分区：
文献类型：
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作者：
Jihong Zhang;H. Tao;Xiujian Zhao
采用熔融淬冷法制备了56 GeS 2 - 24 Ga 2S 3 - 20 KCl硫卤玻璃。在800 nm激光激发下，观察到以525 nm和550 nm为中心的强绿色发射和以660 nm为中心的弱红色发射，分别归属于2 H 11/2→ 4 I 15/2，4 S 3/2→ 4 I 15/2和4 F 9/2→ 4 I 15/2跃迁。当Er ~（3+）浓度为0.1mol%时，发光强度达到最大值。结合Er ~（3+）离子的亚稳4 I ~（13/2）能级寿命和局域环境的研究结果，提出了可能的上转换发光机制。发现硫卤玻璃可以作为上转换发光的良好基质材料。
Er3+ions doped chalcohalide glasses with the composition of 56GeS2-24Ga2S3-20KCl were fabricated by a melt-quenching method. Under 800 nm laser excitation, strong green emissions centered at 525 nm and 550 nm and weak red emission centered at 660 nm were observed, which were assigned to2H11/2→4I15/2,4S3/2→4I15/2, and4F9/2→4I15/2transitions, respectively. The intensity reached maximum when the Er3+ions concentration was 0.1 mol%. The possible upconversion luminescence mechanism was proposed from the discussion on the above results as well as the results of lifetimes of the metastable4I13/2level and local environment of Er3+ions. It is found that chalcohalide glass can be good host materials for upconversion luminescence.