X-ray detection properties of polycrystalline Cd1-xZnxTe detectors for digital radiography

Sang Sik Kang; Ji Koon Park; Dong Gil Lee; Chi Woong Mun; Jae Hyung Kim; Sang Hee Nam

doi:10.1117/12.480185

5 June 2003 X-ray detection properties of polycrystalline Cd_1-xZn_xTe detectors for digital radiography

Sang Sik Kang, Ji Koon Park, Dong Gil Lee, Chi Woong Mun, Jae Hyung Kim, Sang Hee Nam

Proceedings Volume 5030, Medical Imaging 2003: Physics of Medical Imaging; (2003) https://doi.org/10.1117/12.480185
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

There has been considerable recent progress in II-IV semiconductor materials and in methods for improving performance of the associated digital x-ray detectors. Cd_1-xZn_xTe is known as promising medical x-ray detector material. The CdTe and Cd_1-xZn_xTe (x=0.15,0.25,0.3) detectors were fabricated by vacuum thermal evaporator for the large area deposition. First, the stoichimetric ratio and the x-ray diffraction of the deposited (Cd,Zn)Te films were analyzed by EPMA and XRD. Secondly, leakage current, x-ray sensitivity, SNR, and linearity were measured to analyze the x-ray detection effect of Zn in (Cd,Zn)Te film. Experimental results showed that the increase of Zn concentration rates in Cd_1-xZn_xTe detectors reduced the leakage current and improved the x-ray detection performance.

Citation Download Citation

Sang Sik Kang, Ji Koon Park, Dong Gil Lee, Chi Woong Mun, Jae Hyung Kim, and Sang Hee Nam "X-ray detection properties of polycrystalline Cd_1-xZn_xTe detectors for digital radiography", Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); https://doi.org/10.1117/12.480185

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