Quantitative evaluation of mercuric iodide and selenium for X-ray imaging device

Analog film/screen systems have been replaced with digital X-ray imaging devices using direct conversion materials. In this paper, mercuric iodide (HgI/sub 2/) and amorphous selenium (a-Se) films were deposited through the particle-in-binder (PIB) and physical vapor deposition (PVD) methods, respect...

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Hauptverfasser:	Byung-Youl Cha, Ji-Koon Park, Sang-Sik Kang, Jung-Wook Shin, Jin-Young Kim, Hyung-Won Lee, Sang-Hee Nam
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Active matrix technology Amorphous materials Atherosclerosis Chemical vapor deposition Current measurement Design optimization Electric variables measurement Leakage current Signal to noise ratio X-ray imaging
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creator	Byung-Youl Cha Ji-Koon Park Sang-Sik Kang Jung-Wook Shin Jin-Young Kim Hyung-Won Lee Sang-Hee Nam
description	Analog film/screen systems have been replaced with digital X-ray imaging devices using direct conversion materials. In this paper, mercuric iodide (HgI/sub 2/) and amorphous selenium (a-Se) films were deposited through the particle-in-binder (PIB) and physical vapor deposition (PVD) methods, respectively. Using the MCNP 4C code, the interaction of X-ray photons in HgI/sub 2/ and a-Se bulk, their transport, and transmitted energy spectrum of continuous X-ray, with total absorbed energy were simulated. Using I-V measurements, their electrical properties, such as leakage current, X-ray sensitivity, and signal-to-noise ratio (SNR), were investigated. The results of our study can be useful in the future design and optimization of direct active-matrix flat-panel detectors (AMFPD) for various digital X-ray imaging modalities.
doi_str_mv	10.1109/NSSMIC.2004.1466882
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subjects	Active matrix technology Amorphous materials Atherosclerosis Chemical vapor deposition Current measurement Design optimization Electric variables measurement Leakage current Signal to noise ratio X-ray imaging
title	Quantitative evaluation of mercuric iodide and selenium for X-ray imaging device
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