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Multi-phase induced ultra-broad 1100-2100 nm emission of Ni2+ in nano-glass composites containing hybrid ZnGa2O4 and ZnF2 nanocrystals
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.jeurceramsoc.2020.01.019
Yindong Zhang , Bochao Sun , Lu Yang , Xiaosong Lu , Zhigang Gao , Yushi Chu , Shu Guo , Shiyu Sun , Shaoqian Zhang , Li Li , Lu Liu , Xinghua Yang , Jing Ren , Jianzhong Zhang

A new type of Ni2+-doped dual-phase glass ceramics (GCs) is developed by a simple one-step thermal-induced crystallization process. The GCs thus obtained are embedded simultaneously with hybrid ZnGa2O4 and ZnF2 nanocrystals (NCs). When pumped by a readily available 808 nm laser diode, an ultra-broad near-infrared (NIR) emission in a range of 1100−2100 nm is observed at room temperature. The NIR emission band with a full-width-at-half-maximum (FWHM) of more than 450 nm is comparable to the largest value ever reported in Ni2+-doped GCs, and much broader than those of single-phase GCs embedded with either pure ZnGa2O4 or ZnF2 NCs. The microscopic morphologies of the embedded hybrid NCs, and especially the distribution of Ni2+ in the dual-phase GCs are studied by analytical transmission electron microscopy (TEM). The intriguing photoluminescence properties of Ni2+ are thoroughly investigated by steady-state and time-resolved emission spectra. The GCs demonstrated herein hold promise as broadband solid-state NIR-light sources.



中文翻译:

包含ZnGa 2 O 4和ZnF 2纳米杂化物的纳米玻璃复合材料中Ni 2+的多相诱导超宽1100-2100 nm发射

通过简单的一步热诱导结晶过程,开发了一种新型的Ni 2+掺杂双相玻璃陶瓷(GCs)。如此获得的GC与ZnGa 2 O 4和ZnF 2混合纳米晶体(NCs)同时嵌入。当由容易获得的808 nm激光二极管泵浦时,在室温下可观察到1100-2100 nm范围内的超宽近红外(NIR)发射。最大半峰全宽(FWHM)超过450 nm的NIR发射带可与掺杂Ni 2+的GC中报道的最大值相媲美,并且比嵌入的单相GC宽得多使用纯ZnGa 2 O 4或ZnF 2NCs。通过分析透射电子显微镜(TEM)研究了嵌入式混合NC的微观形貌,特别是Ni 2+在双相GC中的分布。通过稳态和时间分辨发射光谱彻底研究了Ni 2+的有趣的光致发光特性。本文演示的GC有望作为宽带固态NIR光源。

更新日期:2020-01-10
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