Zinc Sulfide Ceramics: Fabrication and Optical Properties
Summary
Zinc sulfide ceramics represent a versatile class of wide-bandgap materials prized for their high refractive index, broad optical transparency and robust mechanical performance. Fabrication routes encompass powder synthesis, sintering and post-treatment processes. Wet chemical precipitation yields fine ZnS nanopowders which can be consolidated by spark plasma sintering to produce dense, polycrystalline bodies. Alternatively, chemical vapour deposition affords adherent coatings and bulk parts that benefit from subsequent hot isostatic pressing to reduce residual porosity and enhance infrared transmission. Doping and surface treatments further tune optical and mechanical behaviour, enabling fine control over luminescence, transmission windows and hardness. Microstructural features such as grain size, defect concentration and secondary phases govern light scattering, refractive index homogeneity and photoluminescence efficiency. As a result, zinc sulfide ceramics find application in infrared windows, thermal imaging systems and phosphor devices. Recent advances have sought to integrate dopants, optimise sintering schedules and apply novel post-annealing techniques to balance optical clarity with structural integrity, paving the way for next-generation infrared optics and multifunctional photonic components.
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Zinc Sulfide Ceramics: Fabrication and Optical Properties publication trend
The graph below shows the total number of articles in zinc sulfide ceramics: fabrication and optical properties across all publications each year (not limited to Nature Index journals).
Technical terms
Spark Plasma Sintering (SPS): A rapid consolidation technique using pulsed electric current and uniaxial pressure to densify powders at relatively low temperatures.
Hot Isostatic Pressing (HIP): A high-pressure, high-temperature process that applies inert gas pressure uniformly to reduce porosity and heal internal defects.
Chemical Vapour Deposition (CVD): A method for producing thin films or bulk materials by reacting gaseous precursors on a heated substrate.
Photoluminescence (PL): Emission of light from a material following optical excitation, used to assess defect states and emission efficiency.
Refractive Index: A measure of how much light is bent, or refracted, when entering a material, crucial for lens and window design.
References
- Green phosphorescence of zinc sulfide optical ceramics. Optical Materials Express (2014).
- Recrystallization of CVD-ZnS during thermal treatment. Optical Materials Express (2014).
- On the Surface Hardening of Zinc Sulfide Windows by Gallium Sulfide. Materials (2024).
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