Thallium chalcohalides for X-ray and γ-ray detection

Simon Johnsen, Zhifu Liu, John A. Peters, Jung Hwan Song, Sandy Nguyen, Christos D. Malliakas, Hosub Jin, Arthur J. Freeman, Bruce W. Wessels, Mercouri G. Kanatzidis

Research output: Contribution to journalArticle

89 Citations (Scopus)


We report that the chalcohalide compound Tl6SeI4 is a promising material for efficient X-ray and γ-ray detection. This material has a higher figure of merit than the current state-of-the-art material for room-temperature operation, Cd0.9Zn0.1Te (CZT). We have synthesized high-quality single-crystalline wafers of Tl6SeI 4 with detector-grade resistivities and good carrier transport of both electrons and holes. We demonstrate that pulse height spectra recorded using Co-57 radiation show an energy resolution matching that of a commercial CZT detector material.

Original languageEnglish
Pages (from-to)10030-10033
Number of pages4
JournalJournal of the American Chemical Society
Issue number26
Publication statusPublished - Jul 6 2011

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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    Johnsen, S., Liu, Z., Peters, J. A., Song, J. H., Nguyen, S., Malliakas, C. D., Jin, H., Freeman, A. J., Wessels, B. W., & Kanatzidis, M. G. (2011). Thallium chalcohalides for X-ray and γ-ray detection. Journal of the American Chemical Society, 133(26), 10030-10033.