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Cadmium Zinc Telluride (CdZnTe): 99.9999% High Purity Semiconductor Material

Cadmium Zinc Telluride (CdZnTe) with 99.9999% purity, available in blocks and granules. High-purity semiconductor material for radiation detectors and advanced applications.
Sep 17th,2026 0 Views

What Is Cadmium Zinc Telluride?

Cadmium Zinc Telluride, commonly abbreviated as CdZnTe or CZT, is a ternary II-VI semiconductor material composed of cadmium, zinc, and tellurium. It can be regarded as an alloy system based on cadmium telluride (CdTe) and zinc telluride (ZnTe), with its composition adjusted according to the intended application.

CdZnTe is an important semiconductor material for X-ray and gamma-ray detection because of its wide band gap, high atomic number constituents, and useful charge transport properties. Unlike detector materials that require cryogenic cooling, CdZnTe can be used in room-temperature radiation detection systems, which supports compact and portable detector designs.

Our Cadmium Zinc Telluride is available with a product purity of up to 99.9999% and can be supplied in blocks and granules. Vacuum-sealed packaging is available, with customized packaging options according to customer requirements.

Cadmium Zinc Telluride Product Specifications

Item Specification
Product Name Cadmium Zinc Telluride
Abbreviation CdZnTe / CZT
CAS Number None
Chemical Formula CdZnTe
Purity 99.9999%
Physical Form Blocks, Granules
Packaging Vacuum-sealed bags
Custom Packaging Available according to customer requirements

The composition, crystal quality, dimensions, particle size, and other material parameters should be confirmed according to the specific downstream application and technical requirements.

Key Properties of CdZnTe

Cadmium Zinc Telluride has several semiconductor and radiation-detection characteristics that make it useful in advanced electronic, optoelectronic, and radiation detection applications.

  • Wide and composition-dependent band gap: The band gap of CdZnTe can be adjusted through its composition.
  • High atomic number elements: Cadmium and tellurium provide strong interaction with X-rays and gamma rays.
  • Room-temperature operation: CdZnTe is suitable for detector systems designed to operate without cryogenic cooling.
  • High radiation absorption capability: Its composition and density make it useful for direct-conversion X-ray and gamma-ray detectors.
  • Semiconductor properties: CdZnTe can convert incident radiation directly into electrical signals in appropriate detector structures.
  • Composition tunability: The Cd/Zn ratio can be adjusted to modify material properties for different applications.

Material performance depends strongly on composition, crystal growth conditions, defects, stoichiometry, and post-growth processing. Detector-grade CdZnTe therefore requires tighter material control than general-purpose semiconductor feedstock.

How Does Cadmium Zinc Telluride Work in Radiation Detectors?

CdZnTe is used as a semiconductor detector material that directly converts incoming X-ray or gamma-ray photons into electrical signals.

When high-energy photons enter a CdZnTe detector, they interact with the semiconductor and generate charge carriers. Under an applied electric field, the generated electrons and holes move toward electrodes, producing an electrical signal that can be measured and analyzed.

Because CdZnTe can operate effectively at or near room temperature, detector systems can be designed without the complex cryogenic cooling systems required by some other high-resolution semiconductor detector technologies.

Applications of Cadmium Zinc Telluride

X-Ray Detection

CdZnTe is used in semiconductor X-ray detectors because it provides efficient interaction with X-rays and can support room-temperature detector operation. These characteristics are useful for compact imaging and measurement systems.

Gamma-Ray Detection

CdZnTe is also widely studied and used for gamma-ray spectroscopy and detection. Its high atomic number constituents and room-temperature operation make it suitable for compact gamma-ray detector systems.

Medical Imaging

CdZnTe detector technology can be applied in medical imaging systems that require X-ray or gamma-ray detection. Detector performance depends on crystal quality, detector geometry, electrode design, and signal-processing technology.

Industrial Inspection and Non-Destructive Testing

CdZnTe-based detectors can be used in industrial radiography and non-destructive testing systems to detect and characterize defects or material anomalies. Recent research has examined Cd(Zn)Te detectors for imaging and spectroscopy applications in NDT&E.

Radiation Monitoring

Compact CdZnTe detectors can be used for radiation monitoring and measurement systems where room-temperature operation and a relatively compact detector form factor are valuable.

Nuclear and Security Applications

CdZnTe detector materials are also used in research and development for radiation monitoring, nuclear safeguards, non-proliferation, and related security applications.

Scientific and Astrophysical Instruments

CdZnTe has been investigated for X-ray and gamma-ray detection in scientific instruments, including applications related to astrophysics and high-energy radiation measurement.

CdZnTe for Room-Temperature Radiation Detection

One of the major advantages of CdZnTe is its suitability for room-temperature radiation detection. Traditional high-resolution semiconductor detector technologies may require cooling systems to reduce thermal noise, while CdZnTe can provide useful radiation detection performance under ambient-temperature operating conditions.

This characteristic makes CdZnTe attractive for applications where detector systems need to be compact, portable, energy-efficient, or deployed outside laboratory environments.

However, detector performance is determined by more than the nominal chemical purity of the material. Crystal defects, charge transport properties, composition uniformity, electrode design, and manufacturing processes can all influence the final detector performance.

Cadmium Zinc Telluride Blocks and Granules

CdZnTe can be supplied in different physical forms depending on the intended use. Our current product is available as blocks and granules.

CdZnTe Blocks

Block-form CdZnTe can be used as a feedstock for further material processing, crystal-related applications, research, and other applications requiring larger pieces of high-purity material.

CdZnTe Granules

Granular CdZnTe provides a smaller and more flexible feedstock form for material processing and research applications. Particle size and packaging requirements should be confirmed according to the customer's process.

High Purity 99.9999% CdZnTe

High material purity is an important consideration for advanced semiconductor and research applications. The listed Cadmium Zinc Telluride product has a purity of 99.9999%, equivalent to six-nines purity.

High-purity CdZnTe can help reduce the influence of unwanted impurities on downstream material processing. For detector-grade applications, however, buyers should also evaluate crystal quality, defect density, composition uniformity, electrical properties, and other application-specific parameters rather than relying on purity alone.

How to Choose Cadmium Zinc Telluride

1. Define the Application

First determine whether the material is intended for radiation detectors, semiconductor research, crystal growth, optical applications, material development, or another process. Different applications may require different material specifications.

2. Confirm Purity

Confirm the required purity level and the acceptable concentration of individual impurity elements. For advanced semiconductor applications, trace-element control may be as important as the total nominal purity.

3. Confirm Composition

CdZnTe is a compositionally tunable material. The required Cd/Zn/Te ratio should therefore be specified according to the intended application and target material properties.

4. Select the Physical Form

Choose blocks, granules, or another form according to the customer's processing requirements. Particle size, block dimensions, and other physical specifications should be confirmed before ordering.

5. Check Crystal and Material Quality

For detector applications, material quality can have a major influence on detector performance. Buyers may need specifications related to crystal structure, defects, inclusions, resistivity, carrier transport, and composition uniformity.

6. Confirm Packaging and Shipping Requirements

CdZnTe should be packaged appropriately for the intended transportation and storage conditions. Vacuum-sealed bags are available for the listed product, and customized packaging can be discussed for specific orders.

Cadmium Zinc Telluride Manufacturing and Crystal Growth

The production of high-quality CdZnTe requires careful control of raw materials, composition, melting, solidification, crystal growth, and post-growth processing.

  1. Raw Material Preparation: High-purity cadmium, zinc, and tellurium sources are prepared according to the required composition.
  2. Material Synthesis: The constituent elements are combined under controlled conditions to form the CdZnTe material.
  3. Composition Control: The elemental ratio is controlled to achieve the target Cd/Zn/Te composition.
  4. Crystal Growth: Appropriate crystal-growth techniques can be used when detector-grade or single-crystal material is required.
  5. Cooling and Solidification: Controlled thermal conditions help reduce undesirable defects and compositional variations.
  6. Post-Growth Processing: Depending on the intended application, the material may undergo cutting, polishing, annealing, or other treatments.
  7. Quality Inspection: Chemical, physical, structural, and electrical properties can be evaluated according to customer requirements.

Crystal growth technology is particularly important for detector-grade CdZnTe because defects, inclusions, grain boundaries, and composition variations can affect charge transport and detector performance.

Quality Control of CdZnTe

Quality control for Cadmium Zinc Telluride can include multiple levels of inspection depending on the intended application.

  • Material purity analysis
  • Elemental composition analysis
  • Impurity concentration analysis
  • Crystal structure evaluation
  • Defect and inclusion inspection
  • Electrical property testing
  • Dimensional inspection
  • Packaging inspection

For research and industrial orders, customers should specify the required quality documentation and testing standards before production or shipment.

Cadmium Zinc Telluride Supplier for Industrial and Research Applications

Choosing an appropriate CdZnTe supplier is important when the material will be used for semiconductor research, radiation detection, or other advanced applications. Buyers should evaluate not only nominal purity but also chemical composition, physical form, quality documentation, packaging, and supply capability.

Our Cadmium Zinc Telluride is available at 99.9999% purity in blocks and granules. The product is packaged in vacuum-sealed bags, while customized packaging can be arranged according to customer requirements.

For bulk orders, customers can provide their required purity, composition, physical form, quantity, packaging, destination, and technical specifications so that the material can be confirmed according to the intended application.

Frequently Asked Questions About Cadmium Zinc Telluride

What is the chemical formula of Cadmium Zinc Telluride?

Cadmium Zinc Telluride is commonly represented as CdZnTe or CZT. More precisely, it is often expressed as Cd1-xZnxTe because its composition can vary according to the Zn content.

What purity of CdZnTe is available?

The listed product is available with a purity of 99.9999%.

What is CdZnTe used for?

CdZnTe is widely used and researched for X-ray and gamma-ray radiation detectors, including medical imaging, industrial inspection, non-destructive testing, radiation monitoring, nuclear applications, and scientific instrumentation.

Can CdZnTe operate at room temperature?

Yes. CdZnTe is particularly attractive for radiation detectors because it can provide useful X-ray and gamma-ray detection performance at room temperature without the cryogenic cooling required by some other semiconductor detector technologies.

What physical forms are available?

The listed product is available in blocks and granules. Other physical specifications should be confirmed according to the customer's requirements.

Is the packaging customizable?

Yes. The listed product is supplied in vacuum-sealed bags, and packaging can be customized according to customer requirements.

Does high purity guarantee detector-grade performance?

No. High chemical purity is important, but detector-grade CdZnTe performance also depends on factors such as crystal quality, defect density, composition uniformity, electrical properties, charge transport, and processing conditions.

Conclusion

Cadmium Zinc Telluride (CdZnTe) is an advanced II-VI semiconductor material with important applications in X-ray and gamma-ray detection. Its composition-dependent electronic properties, high atomic number constituents, and suitability for room-temperature operation make it valuable for compact radiation detection and other advanced semiconductor applications.

Our 99.9999% high-purity Cadmium Zinc Telluride is available in blocks and granules with vacuum-sealed packaging. For industrial, research, and detector-related applications, customers can specify the required purity, composition, physical form, quantity, packaging, and technical requirements for material confirmation.