研究目的
Investigating the controlled nano-crystallization of IR frequency-doubling Cd4GeS6 crystal in chalcogenide glass to achieve novel nonlinear optical materials.
研究成果
IR-transparent chalcogenide glass-ceramics containing Cd4GeS6 frequency-doubling nanocrystals were successfully fabricated. The study sheds light on the glass crystallization mechanism and provides a feasible approach for designing new IR frequency-doubling materials.
研究不足
The study focuses on the controlled nano-crystallization of Cd4GeS6 in chalcogenide glass, with potential limitations in scalability and the optical transmission impairment due to uncontrolled crystallization process.
1：Experimental Design and Method Selection:
The study employs controlled nano-crystallization to fabricate IR-transparent chalcogenide glass-ceramics containing Cd4GeS6 nanocrystals. The methodology includes melt-quenching and subsequent thermal treatment.
2：Sample Selection and Data Sources:
Bulk glasses with a nominal composition of
3：2GeS2·8Sb2S3·5CdCl2 were prepared. List of Experimental Equipment and Materials:
Differential scanning calorimetry (DSC, TA Q2000), Fourier transform infrared spectrometer (Nicolet 381), UV-Vis-NIR spectrophotometer (PerkinElmer Lambda 950), X-ray diffractometer (XRD, D2 Phaser, Bruker), field emission scanning electron microscope (Nova Nao SEM 450, FEI), confocal micro-Raman spectrometer (Renishaw InVia).
4：Experimental Procedures and Operational Workflow:
The batch was sealed in silica ampoule, heated, quenched, and annealed. GCs were obtained by crystallization process at different temperatures for a fixed time.
5：Data Analysis Methods:
The nanocrystalline structure was investigated through XRD, SEM, and Raman scattering techniques.
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