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Title: Amorphous Selenium Based Detectors for Medical Imaging Applications

Abstract

We have developed and characterized large volume amorphous (a-) selenium (Se) stabilized alloys for room temperature medical imaging devices and high-energy physics detectors. The synthesis and preparation of well-defined and high quality a-Se (B, As, Cl) alloy materials have been conducted using a specially designed alloying reactor at EIC and installed in an argon atmosphere glove box. The alloy composition has been precisely controlled and optimized to ensure good device performance. The synthesis of large volume boron (B) doped (natural and isotopic 10B) a-Se (As, Cl) alloys has been carried out by thoroughly mixing vacuum distilled and zone-refined (ZR) Se with previously synthesized Se-As master alloys, Se-Cl master alloys and B. The synthesized a-Se (B, As, Cl) alloys have been characterized by x-ray diffraction (XRD), differential scanning calorimetry (DSC), Fourier transform infra-red spectroscopy (FTIR), x-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectroscopy (ICP-MS), and detector testing. The a- Se alloys have shown high promise for x-ray detectors with its high dark resistivity (1010-1013 cm), good charge transport properties, and cost-effective large area scalability. Details of various steps about detector fabrication and testing of these imaging devices are also presented.

Authors:
 [1];  [1];  [1];  [2]
  1. EIC Laboratories, Inc.
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
1003696
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Proceedings of SPIE; Journal Volume: 6319
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SELENIUM ALLOYS; AMORPHOUS STATE; RADIATION DETECTORS; BORON ALLOYS; ARSENIC ALLOYS; CHLORINE ADDITIONS; SYNTHESIS; PERFORMANCE TESTING; X-RAY DETECTION

Citation Formats

Mandal, Krishna, Kang, Sung Hoon, Choi, Michael, and Jellison Jr, Gerald Earle. Amorphous Selenium Based Detectors for Medical Imaging Applications. United States: N. p., 2006. Web. doi:10.1117/12.683817.
Mandal, Krishna, Kang, Sung Hoon, Choi, Michael, & Jellison Jr, Gerald Earle. Amorphous Selenium Based Detectors for Medical Imaging Applications. United States. doi:10.1117/12.683817.
Mandal, Krishna, Kang, Sung Hoon, Choi, Michael, and Jellison Jr, Gerald Earle. Sun . "Amorphous Selenium Based Detectors for Medical Imaging Applications". United States. doi:10.1117/12.683817.
@article{osti_1003696,
title = {Amorphous Selenium Based Detectors for Medical Imaging Applications},
author = {Mandal, Krishna and Kang, Sung Hoon and Choi, Michael and Jellison Jr, Gerald Earle},
abstractNote = {We have developed and characterized large volume amorphous (a-) selenium (Se) stabilized alloys for room temperature medical imaging devices and high-energy physics detectors. The synthesis and preparation of well-defined and high quality a-Se (B, As, Cl) alloy materials have been conducted using a specially designed alloying reactor at EIC and installed in an argon atmosphere glove box. The alloy composition has been precisely controlled and optimized to ensure good device performance. The synthesis of large volume boron (B) doped (natural and isotopic 10B) a-Se (As, Cl) alloys has been carried out by thoroughly mixing vacuum distilled and zone-refined (ZR) Se with previously synthesized Se-As master alloys, Se-Cl master alloys and B. The synthesized a-Se (B, As, Cl) alloys have been characterized by x-ray diffraction (XRD), differential scanning calorimetry (DSC), Fourier transform infra-red spectroscopy (FTIR), x-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectroscopy (ICP-MS), and detector testing. The a- Se alloys have shown high promise for x-ray detectors with its high dark resistivity (1010-1013 cm), good charge transport properties, and cost-effective large area scalability. Details of various steps about detector fabrication and testing of these imaging devices are also presented.},
doi = {10.1117/12.683817},
journal = {Proceedings of SPIE},
number = ,
volume = 6319,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}