TY - GEN
T1 - Characterization of thallium-based ternary semiconductor compounds for radiation detection
AU - Liu, Zhifu
AU - Peters, John A.
AU - Nguyen, Sandy
AU - Sebastian, Maria
AU - Wessels, Bruce W.
AU - Wang, Shichao
AU - Jin, Hosub
AU - Im, Jino
AU - Freeman, Arthur J.
AU - Kanatzidis, Mercouri G.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - We report on the characterization of optical and electronic properties of a series of thallium chalcogenide, wide gap ternary semiconductor compounds including Tl6I4Se, Tl6I4S, Tl 3SbS3, Tl2SnS3, and Tl 7Bi3I16 for ionized radiation detection at the x-ray and γ ray regimes. The semiconductor crystals were grown by the modified Bridgman method. The optical absorption, band gap, mobility-lifetime products for electron and hole carriers were measured at room temperature. For Tl6I4S and Tl6I4Se the mobility-lifetime products are comparable to those of CdZnTe. We measured room temperature detector response to x-ray and γ ray sources. For 137Cs radiation, Tl6I4Se has a well-resolved spectral response comparable to that of CdZnTe.
AB - We report on the characterization of optical and electronic properties of a series of thallium chalcogenide, wide gap ternary semiconductor compounds including Tl6I4Se, Tl6I4S, Tl 3SbS3, Tl2SnS3, and Tl 7Bi3I16 for ionized radiation detection at the x-ray and γ ray regimes. The semiconductor crystals were grown by the modified Bridgman method. The optical absorption, band gap, mobility-lifetime products for electron and hole carriers were measured at room temperature. For Tl6I4S and Tl6I4Se the mobility-lifetime products are comparable to those of CdZnTe. We measured room temperature detector response to x-ray and γ ray sources. For 137Cs radiation, Tl6I4Se has a well-resolved spectral response comparable to that of CdZnTe.
KW - Photoconductivity
KW - Tl-chalcogenide
KW - Wide gap semiconductor
KW - X-ray detector
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UR - http://www.scopus.com/inward/citedby.url?scp=84872951856&partnerID=8YFLogxK
U2 - 10.1117/12.928325
DO - 10.1117/12.928325
M3 - Conference contribution
AN - SCOPUS:84872951856
SN - 9780819492241
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV
T2 - Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV
Y2 - 13 August 2012 through 15 August 2012
ER -