Calcium Sulfide Based Nanophosphors-A Review on Synthesis Techniques, Characterization and Applications

Area of Science:

• Materials Science
• Nanotechnology
• Solid-State Chemistry

Background:

• Calcium sulfide (CaS) nanophosphors exhibit significant photoluminescence properties.
• These properties make CaS nanophosphors highly promising for optoelectronic and biomedical applications.
• The synthesis method critically influences the performance of CaS nanophosphors.

Purpose of the Study:

• To provide a comprehensive review of synthesis techniques for CaS nanophosphors.
• To discuss the structural and optical properties of CaS nanophosphors.
• To explore the applications of CaS nanophosphors in optoelectronics and biomedicine.

Main Methods:

• Solvothermal synthesis
• Alkoxide method
• Sol-gel technique
• Microwave-assisted synthesis
• Wet chemical co-precipitation
• Solid-state diffusion
• Single-source precursor methods

Main Results:

• Various synthesis methods yield CaS nanophosphors with tunable structural and optical properties.
• Dopant selection allows for emission color tuning across the blue-to-red spectrum.
• CaS nanophosphors demonstrate potential in optoelectronic devices and biomedical imaging.

Conclusions:

• The choice of synthesis method is paramount for optimizing CaS nanophosphor characteristics.
• CaS nanophosphors offer versatile applications due to their tunable luminescence.
• This review consolidates current knowledge and future directions for CaS nanophosphor research.