Cadmium telluride
Cadmium telluride (CAS: 1306-25-8) is a compound with the empirical formula CdTe. It is a direct bandgap semiconductor with a bandgap of 1.56 eV at 300 K. Cadmium telluride is primarily recognised for its crucial role in photovoltaic technology, serving as a key material in the fabrication of solar cells. TSS supplies this compound with a high purity of ≥99.99% trace metals basis.
Photovoltaic Solar Cells
Cadmium telluride is a leading material for thin-film solar cells. It is typically used in a p-n junction, often sandwiched with cadmium sulfide, to create efficient photovoltaic devices with an n-i-p structure.
Semiconductor Research
With its direct bandgap of 1.56 eV at room temperature, CdTe is valuable in semiconductor physics research. Its properties make it suitable for studies in optoelectronics and material science.
Dopants and Phosphor Materials
Cadmium telluride functions as a dopant in various material applications. It is also classified as a phosphor material, indicating potential uses in luminescence and related technologies.
| Molecular weight | 240.01 |
|---|---|
| Empirical formula | CdTe |
| Assay | ≥99.99% trace metals basis |
| Form | crystals |
| Boiling point | 1130 °C |
| Density | 6.2 g/mL at 25 °C(lit.) |
| Particle size | <250 μm |
| Melting point | 1092 °C |
| Application | A direct bandgap semiconductor (bandgap 1.56 eV at 300 K). CdTe is also a strong solar cell material. It is usually sandwiched with cadmium sulfide to form a p-n junction photovoltaic solar cell. Typically, CdTe cells use a n-i-p structure. |
Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H332Harmful if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P501Dispose of contents and container per local regulations
| Transport (UN / ADR) | UN 2570 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20/21/22-50/53 |
| Safety statements (S) | 60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What are the primary applications of Cadmium Telluride?
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Cadmium telluride is primarily used in the fabrication of photovoltaic solar cells due to its direct bandgap semiconductor properties. It is also utilised in semiconductor research, as a dopant, and as a phosphor material.
What is the CAS number and formula for Cadmium Telluride?
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The CAS number for Cadmium telluride is 1306-25-8, and its empirical formula is CdTe.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cadmium telluride with an assay of ≥99.99% trace metals basis. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Cadmium Telluride be handled safely?
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Cadmium telluride is harmful if swallowed, in contact with skin, or if inhaled (H302, H312, H332) and is very toxic to aquatic life with long-lasting effects (H410). Handle with appropriate personal protective equipment (P280) in a well-ventilated area and avoid release to the environment (P273). Dispose of contents and container in accordance with local regulations (P501).
How is Cadmium Telluride shipped and exported?
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Cadmium telluride is shipped and exported under UN 2570, hazard class 6.1, packing group III.
How can I request a quote or sample for Cadmium Telluride?
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To request a quote or sample for Cadmium telluride, please contact our sales team via the website or by phone.
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