Cadmium sulfide CdS Powder Purity 99.99% CAS 1306-23-6
Cadmium sulfide (CdS) is an inorganic compound with the chemical formula CdS. It appears as a yellow to red-orange powder, depending on the particle size and preparation methods
Cadmium sulfide (CdS) is an inorganic compound with the chemical formula CdS. It appears as a yellow to red-orange powder, depending on the particle size and preparation methods. CdS is a semiconductor material that has found applications across various industries due to its unique optical and electronic properties. It exhibits a direct bandgap, which makes it suitable for use in optoelectronic devices such as photovoltaic cells (specifically, thin-film solar cells), light-emitting diodes (LEDs), and photodetectors.
Features of Cadmium Sulfide (CdS) Powder
Bandgap Tunability: The bandgap of CdS can be tuned by varying the composition, making it adaptable for different wavelengths of light absorption or emission. This property is particularly useful in solar energy conversion and lighting applications.
High Optical Absorbance: CdS has high optical absorbance in the visible spectrum, enabling efficient conversion of light into electrical energy or vice versa.
Nontoxicity (in comparison to other cadmium compounds): While cadmium compounds are generally considered toxic, CdS is less soluble in water and therefore less toxic than other forms of cadmium, although handling precautions are still necessary.
Stability: CdS is chemically stable under normal environmental conditions but can be sensitive to oxidation, especially at high temperatures.
Ease of Synthesis: CdS can be synthesized through various methods including chemical precipitation, sol-gel, and vapor deposition techniques, allowing for control over particle size, shape, and crystallinity.
Parameters of Cadmium Sulfide (CdS) Powder
Certificate of Analysis
Product
Purity
Specification
Net weight (kg)
Cadmium sulfide CdS Powder
99.99%
Impurity Content (ppm)
Element
Guarantee Value(max)
Cu
5
Mg
10
Ag
5
Ni
10
Zn
5
Fe
10
Al
10
As
5
Pb
10
Cr
10
Sn
5
Applications of Cadmium Sulfide (CdS) Powder
Photovoltaics: CdS is commonly used as a buffer layer in thin-film solar cells, particularly in conjunction with copper indium gallium selenide (CIGS) or cadmium telluride (CdTe) to enhance efficiency.
Electroluminescent Devices: It is used in the production of electroluminescent displays and LEDs due to its ability to emit light when excited electrically.
Optical Filters and Windows: Because of its specific optical properties, CdS is used in optical filters and windows for controlling the transmission of certain wavelengths.
Photodetectors and Sensors: Its sensitivity to light makes it suitable for use in photodetectors, night vision devices, and other sensing applications.
Catalysis: CdS also shows catalytic activity in certain chemical reactions, such as the degradation of pollutants.
Company Profile
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.
If you are looking for high-quality Cadmium Sulfide (CdS) Powder, please feel free to contact us or click on the needed products to send an inquiry.
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Shipment term By air, by sea, by express, as customers request.
Storage conditions 1) Store in a dry environment at room temperature. 2) Avoid damp and high temperature. 3) Use immediately after opening the inner packing bag.
FAQs of Cadmium Sulfide (CdS) Powder
Is Cadmium Sulfide safe to handle?
While CdS is less toxic than other cadmium compounds, proper safety measures should be taken during handling due to its cadmium content. Use protective gear, avoid inhalation and ingestion, and follow local regulations for disposal.
How is Cadmium Sulfide Powder synthesized?
CdS powder can be synthesized through chemical precipitation, where solutions of cadmium salts and sulfide precursors are reacted, often under controlled pH and temperature conditions. Other methods include sol-gel processing and chemical vapor deposition.
Can the color of Cadmium Sulfide Powder be changed?
The color of CdS powder varies naturally from yellow to red-orange based on particle size and preparation. By doping with other elements, the optical properties and thus the color can be further modified.
What is the role of Cadmium Sulfide in solar cells?
In thin-film solar cells, CdS acts as a buffer layer between the transparent conductive oxide (TCO) layer and the absorber layer (like CIGS or CdTe). It helps to create a good interface for electron transfer, improves charge carrier collection, and reduces recombination losses, thereby enhancing cell efficiency.
Is there an environmental concern associated with using Cadmium Sulfide?
Yes, cadmium is a toxic heavy metal, and its release into the environment is strictly regulated. End-of-life disposal of products containing CdS requires special handling to prevent soil and water contamination. Research efforts are ongoing to develop alternative, less toxic materials for similar applications.
