Performance Advantages and Application Analysis of Cadmium Zinc Telluride (CdZnTe) Materials

Core Physicochemical Properties and Technical Advantages

1. Excellent Optoelectronic Performance

   • High absorption coefficient and photoelectric conversion efficiency: Strong light absorption capacity enables efficient conversion of light energy into electrical energy, making it an ideal material for high-efficiency solar cells, especially in scenarios requiring high energy conversion efficiency.
   • Wide bandgap characteristic: The bandgap width gives it outstanding performance in the field of infrared detection, enabling high-sensitivity detection in the long-wave infrared region, suitable for night vision devices, thermal imaging systems, etc.

2. Good Chemical Stability

   • It is not easy to react with acids, alkalis, and other substances, and can maintain stable performance in complex environments such as humidity and high temperature, extending the service life of devices and reducing maintenance costs.

3. High Carrier Mobility

   • Electrons and holes move rapidly in the material, which significantly improves the response speed and working efficiency of semiconductor devices. For example, it can optimize signal transmission efficiency in high-speed optoelectronic devices.

4. Unique Advantages in Radiation Detection

   • Low noise and high resolution: In the detection of hard X-rays and γ-rays (energy range of 10 keV-1 MeV), it can accurately distinguish particles of different energies, suitable for medical imaging (such as PET scans), nuclear safety detection, and other fields.
   • Wide energy detection range: Compared with Si detectors, CdZnTe can detect a wider range of ray energies and with higher efficiency; compared with high-purity germanium detectors, it can work at room temperature without a low-temperature cooling system, offering portability advantages, and the detection efficiency per unit volume is also higher.
   • Radiation resistance and anti-deliquescence: It can withstand a ray dose of more than 1 Mcps/mm² and is not easy to deliquesce due to changes in environmental humidity, making it suitable for use in strong radiation or humid environments (such as nuclear industry and space exploration).

II. Typical Application Scenarios

III. Comparative Advantages over Other Detection Materials

• vs High-purity Germanium Detectors: No liquid helium cooling is required, working at room temperature with small size and light weight, suitable for field or mobile scenarios.