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Jin, Hosub
Quantum Materials Design Lab
Research Interests
  • Spin-orbit coupling, electron-correlation, topological quantum phases

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Photo-Induced Current Transient Spectroscopy of Semi-insulating Single Crystal Cs2Hg6S7

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Title
Photo-Induced Current Transient Spectroscopy of Semi-insulating Single Crystal Cs2Hg6S7
Author
Liu, ZPeters, JALi, HKanatzidis, MGIm, JJin, HosubFreeman, AJWessels, BW
Keywords
Cs-based semiconductor; wide gap semiconductor; photoconductivity; defects; gamma-ray; RESISTIVITY BULK MATERIAL; DEEP LEVELS; DETECTORS; CDTE
Issue Date
2015-01
Publisher
SPRINGER
Citation
JOURNAL OF ELECTRONIC MATERIALS, v.44, no., pp.222 - 226
Abstract
The ternary compound Cs2Hg6S7 has shown considerable promise as a wide gap semiconductor for hard radiation detection at room temperature. We report on the measurement of defect levels in Cs2Hg6S7 using photo-induced current transient spectroscopy. We observe a series of defect levels with mean activation energies of 0.053, 0.052, 0.34, 0.35, and 0.46 eV. The defects are attributed to Cs vacancies and Cs and Hg antisite defects. Defect capture cross-sections are in the range 10(-20)-10(-15) cm(2).
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DOI
10.1007/s11664-014-3372-2
ISSN
0361-5235
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PHY_Journal Papers
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