title: Thallium chalcohalides for X-ray and γ-ray detection.
abstract: We report that the chalcohalide compound Tl(6)SeI(4) 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, Cd(0.9)Zn(0.1)Te (CZT). We have synthesized high-quality single-crystalline wafers of Tl(6)SeI(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.
authors.affiliation: Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: Simon
authors.initials: S
authors.lastname: Johnsen
authors.forename: Zhifu
authors.initials: Z
authors.lastname: Liu
authors.forename: John A
authors.initials: JA
authors.lastname: Peters
authors.forename: Jung-Hwan
authors.initials: JH
authors.lastname: Song
authors.forename: Sandy
authors.initials: S
authors.lastname: Nguyen
authors.forename: Christos D
authors.initials: CD
authors.lastname: Malliakas
authors.forename: Hosub
authors.initials: H
authors.lastname: Jin
authors.forename: Arthur J
authors.initials: AJ
authors.lastname: Freeman
authors.forename: Bruce W
authors.initials: BW
authors.lastname: Wessels
authors.forename: Mercouri G
authors.initials: MG
authors.lastname: Kanatzidis