Lin Liting, Miao Rulin, Xie Wenqiang, Chen Jiejie, Zhao Yujun, Wu Zhenping, Qiu Jianrong, Yu Haohai, Zhou Shifeng
State Key Laboratory of Luminescent Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.
Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangzhou 510640, China.
iScience. 2020 Dec 27;24(1):101984. doi: 10.1016/j.isci.2020.101984. eCollection 2021 Jan 22.
Semiconductor-in-glass composites are an exciting class of photonic materials for various fundamental applications. The significant challenge is the scalable elaboration of composite with the desirable combination of tunable structure, high semiconductor loading ratio, and excellent transparency. Here we report that the topological engineering strategy via hybridization of the glass network former enables to surmount the aforementioned challenge. It not only facilitates the precipitation of (GaAl)O domains with continuously tunable composition but also allows to simultaneously refine the grain size and enhance the crystallinity. In addition, the composites exhibit excellent transparency and can host various active dopants. We demonstrate the attractive broadband optical response of the composite and achieve the pulse laser operation in mid-infrared waveband. The findings are expected to provide a fundamental principle of modification in hybrid system for generation of high-performance semiconductor-in-glass composites.
玻璃基半导体复合材料是一类令人兴奋的光子材料，可用于各种基础应用。一个重大挑战是如何以可扩展的方式制备出具有理想结构组合、高半导体负载率和出色透明度的复合材料。在此，我们报告通过玻璃网络形成体的杂化实现拓扑工程策略能够克服上述挑战。它不仅有助于沉淀出成分可连续调节的（GaAl）O 域，还能同时细化晶粒尺寸并提高结晶度。此外，该复合材料具有出色的透明度，并且可以容纳各种活性掺杂剂。我们展示了该复合材料具有吸引力的宽带光学响应，并在中红外波段实现了脉冲激光运行。这些发现有望为高性能玻璃基半导体复合材料的混合体系改性提供基本原理。
