Production of High-Performance CdZnTe Crystals Grown by THM for Radiation Detection Applications

Date

2022-01-01

Author

Ünal, Mustafa
Balbaşı, Özden Başar
Karaman, Mehmet Can
Genç, Ayşe Merve
Parlak, Mehmet
Turan, Raşit

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© 2022, The Minerals, Metals & Materials Society.CdZnTe crystals are the perfect candidate to be used in room temperature x-ray and gamma-ray detection systems. Production of detector-grade crystals, on the other hand, is challenging due to the unique properties of the CdZnTe. CdZnTe crystals are soft-brittle materials and have high ionicity of bonds that makes the growth process challenging. Among several growth techniques, the travelling heater method (THM) is a preferred growth method to obtain high-quality crystals with high yield thanks to low segregation of Zn and usage of the seed crystal. In this paper, the production of high-quality CdZnTe crystals is presented. Growth, surface preparation, and contact deposition steps are summarized. CdZnTe crystals with resistivity around 6.1 × 109 Ω cm, mobility-lifetime product around 6.7 × 10−3 cm2/V, and leakage current as low as 2 nA at 200 V bias voltage are obtained, which is compatible with commercially available CdZnTe crystals.

Subject Keywords

CdZnTe crystals, Crystal growth, electrode deposition, gamma-ray detectors, THM growth

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85130065463&origin=inward
https://hdl.handle.net/11511/97597

Journal

Journal of Electronic Materials

DOI

https://doi.org/10.1007/s11664-022-09663-y

Collections

Center for Solar Energy Research and Applications (GÜNAM), Article

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Citation Formats

M. Ünal, Ö. B. Balbaşı, M. C. Karaman, A. M. Genç, M. Parlak, and R. Turan, “Production of High-Performance CdZnTe Crystals Grown by THM for Radiation Detection Applications,” Journal of Electronic Materials, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85130065463&origin=inward.