Electrical and optical properties of Cadmium Sulphide

[BLUE_CHIP]

I'm looking for the electrical and optical properties of Cadmium Sulphide.

Any links of info would be much appreciated

 

[Michael D. Sewell]

Did you try www.webelements.com?[/URL]

 

[ravenprp]

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Cadmium Sulphide (CdS) is a compound made up of the elements cadmium and sulfur. It is a yellowish-orange solid with a hexagonal crystal structure. CdS has both electrical and optical properties that make it useful in various applications.

Electrical Properties:
1. Conductivity: CdS is a semiconductor material, meaning it has intermediate electrical conductivity between that of a conductor and an insulator. Its conductivity can be controlled by doping with impurities.
2. Bandgap: CdS has a direct bandgap of approximately 2.4 eV, making it suitable for use in optoelectronic devices such as solar cells and light-emitting diodes (LEDs).
3. Photoconductivity: CdS exhibits photoconductivity, meaning its electrical conductivity increases when exposed to light. This property is utilized in light sensors and photovoltaic devices.
4. Dielectric constant: CdS has a high dielectric constant, making it useful in electronic components such as capacitors and transistors.

Optical Properties:
1. Absorption: CdS has a high absorption coefficient in the visible and near-infrared regions, making it useful for solar cells and photodetectors.
2. Luminescence: CdS emits light when excited by an external energy source, making it suitable for use in LEDs and other optoelectronic devices.
3. Refractive index: CdS has a high refractive index, making it useful in optical coatings and films.
4. Transparency: In its thin film form, CdS is transparent to visible light, making it suitable for use in optical devices such as windows and lenses.

Sources of information on the electrical and optical properties of CdS can be found in scientific journals, textbooks, and online databases such as the National Institute of Standards and Technology (NIST) and the American Institute of Physics (AIP). Some useful links for further reading are:

1. "Electrical and optical properties of cadmium sulfide thin films" by S. P. Singh and S. C. Abbi (Journal of Applied Physics, 1982): https://aip.scitation.org/doi/10.1063/1.331065
2. "Optical properties of cadmium sulfide nanoparticles" by M. K. Bera et al. (Journal of Applied Physics, 2002): https://aip.scitation.org/doi/10.1063/1