Characterization of thallium-based ternary semiconductor compounds for radiation detection

Zhifu Liu, John A. Peters, Sandy Nguyen, Maria Sebastian, Bruce W. Wessels, Shichao Wang, Hosub Jin, Jino Im, Arthur J. Freeman, Mercouri G. Kanatzidis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV
DOIs
Publication statusPublished - Dec 1 2012
EventHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV - San Diego, CA, United States
Duration: Aug 13 2012Aug 15 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8507
ISSN (Print)0277-786X

Other

OtherHard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV
CountryUnited States
CitySan Diego, CA
Period8/13/128/15/12

Keywords

  • Photoconductivity
  • Tl-chalcogenide
  • Wide gap semiconductor
  • X-ray detector

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Characterization of thallium-based ternary semiconductor compounds for radiation detection'. Together they form a unique fingerprint.

Cite this