Deposition of thick films of polycrystalline mercuric iodide x-ray detectors

Haim Hermon; Michael M. Schieber; Asaf Zuck; Alexander I. Vilensky; Leonid Melekhov; E. Shtekel; A. K. Green; O. Dagan; Steve E. Ready; Robert A. Street; E. Seppi; Raisa Pavlyuchkova; G. Virshup; G. Zentai; L. Partain

doi:10.1117/12.430922

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28 June 2001 Deposition of thick films of polycrystalline mercuric iodide x-ray detectors

Haim Hermon, Michael M. Schieber, Asaf Zuck, Alexander I. Vilensky, Leonid Melekhov, E. Shtekel, A. K. Green, O. Dagan, Steve E. Ready, Robert A. Street, E. Seppi, Raisa Pavlyuchkova, G. Virshup, G. Zentai, L. Partain

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Proceedings Volume 4320, Medical Imaging 2001: Physics of Medical Imaging; (2001) https://doi.org/10.1117/12.430922
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

Abstract

We report x-ray imaging results on polycrystalline HgI₂ detector used for direct x-ray imaging. Due to its good electrical properties and high stopping power for x-rays and gamma rays, the material is a good candidate for many applications in medical imaging. The deposition of the HgI₂ thick films is made by hot wall physical vapor deposition, (PVD) method and some of the structural features are described here. The x-ray response and some dark current data measured on some recently prepared detectors are reported. Some results obtained with poly-HgI₂ thin film deposited on an amorphous-Si TFT's imaging array 4' X 4' performed at the Ginzton Technology Center is reported for the first time. Also phantom images received with a similar deposited poly-HgI₂ thin film deposited on an amorphous- Si TFT's imaging array 2' X 2' performed at Xerox-PARC Research Center is also given here. The status of HgI₂ technology will be discussed.

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Haim Hermon, Michael M. Schieber, Asaf Zuck, Alexander I. Vilensky, Leonid Melekhov, E. Shtekel, A. K. Green, O. Dagan, Steve E. Ready, Robert A. Street, E. Seppi, Raisa Pavlyuchkova, G. Virshup, G. Zentai, and L. Partain "Deposition of thick films of polycrystalline mercuric iodide x-ray detectors", Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); https://doi.org/10.1117/12.430922

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