Electrical and optical properties of Cadmium Sulphide

In summary, Cadmium Sulphide is a semiconductor material with unique electrical and optical properties. It exhibits a direct bandgap, making it suitable for optoelectronic applications such as solar cells and light-emitting diodes. It also has a high refractive index, making it useful for producing anti-reflective coatings. Additionally, Cadmium Sulphide has a wide range of bandgap tunability, allowing for control over its optical properties. Its high electron mobility and low resistivity make it a promising material for electronic devices. However, its toxicity and environmental impact must be carefully considered in its use.
  • #1
BLUE_CHIP
I'm looking for the electrical and optical properties of Cadmium Sulphide.

Any links of info would be much appreciated
 
Chemistry news on Phys.org
  • #2
Did you try www.webelements.com?[/URL]
 
Last edited by a moderator:
  • #3
.

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
 

What is Cadmium Sulphide?

Cadmium Sulphide (CdS) is a compound made up of the elements cadmium and sulphur. It is a yellowish-orange solid that is commonly used in the production of semiconductors and solar cells.

What are the electrical properties of Cadmium Sulphide?

Cadmium Sulphide is a semiconductor, meaning it has electrical conductivity between that of a metal and an insulator. It has a band gap of approximately 2.4 electron volts, making it useful for converting light energy into electrical energy.

What are the optical properties of Cadmium Sulphide?

Cadmium Sulphide has good optical properties, with a high refractive index and low optical absorption. This makes it useful for applications such as photocells and optical sensors.

How is Cadmium Sulphide used in solar cells?

Cadmium Sulphide is often used as a thin film layer in solar cells, where it acts as a window layer to allow light to pass through and reach the active layer. It can also be used as a buffer layer to improve the performance of the solar cell.

Is Cadmium Sulphide toxic?

Cadmium Sulphide can be toxic if ingested or inhaled in large amounts. However, in its solid form it is relatively stable and does not pose a significant risk. Proper safety precautions should be taken when handling and disposing of CdS to avoid any potential health hazards.

Similar threads

Replies
7
Views
2K
  • Science and Math Textbooks
Replies
4
Views
782
Replies
1
Views
662
Replies
7
Views
667
  • Atomic and Condensed Matter
Replies
1
Views
4K
Replies
14
Views
769
Replies
3
Views
799
Replies
2
Views
1K
  • Quantum Physics
Replies
1
Views
666
Replies
4
Views
1K
Back
Top