Alkali metal chalcogenides for radiation detection

J. A. Peters; Zhifu Liu; B. W. Wessels; I. Androulakis; C. P. Sebastian; Hao Li; M. G. Kanatzidis

doi:10.1557/opl.2011.1482

Alkali metal chalcogenides for radiation detection

J. A. Peters^*, Zhifu Liu, B. W. Wessels, I. Androulakis, C. P. Sebastian, Hao Li, M. G. Kanatzidis

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

We report on the optical and charge transport properties of novel alkali metal chalcogenides, Cs ₂Hg ₆S ₇ and Cs ₂Cd ₃Te ₄, pertaining to their use in radiation detection. Optical absorption, photoconductivity, and gamma ray response measurements for undoped crystals were measured. The band gap energies of the Cs ₂Hg ₆S ₇ and Cs ₂Cd ₃Te ₄ compounds are 1.63 eV and 2.45 eV, respectively. The mobility-lifetime products for charge carriers are of the order of ∼10 ^-3 cm ²/V for electrons and ∼10 ^-4 cm ²/V for holes. Detectors fabricated from the ternary compound Cs ₂Hg ₆S ₇ shows well-resolved spectroscopic features at room temperature in response to γ-rays at 122 keV from a ⁵⁷Co source, indicating its potential as a radiation detector.

Original language	English (US)
Title of host publication	Nuclear Radiation Detection Materials - 2011
Pages	133-138
Number of pages	6
DOIs	https://doi.org/10.1557/opl.2011.1482
State	Published - Feb 20 2012
Event	2011 MRS Spring Meeting - San Francisco, CA, United States Duration: Apr 25 2011 → Apr 29 2011

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1341
ISSN (Print)	0272-9172

Other

Other	2011 MRS Spring Meeting
Country	United States
City	San Francisco, CA
Period	4/25/11 → 4/29/11

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@inproceedings{a78ce2b63deb49da98618a40c5d9f36e,

title = "Alkali metal chalcogenides for radiation detection",

abstract = "We report on the optical and charge transport properties of novel alkali metal chalcogenides, Cs 2Hg 6S 7 and Cs 2Cd 3Te 4, pertaining to their use in radiation detection. Optical absorption, photoconductivity, and gamma ray response measurements for undoped crystals were measured. The band gap energies of the Cs 2Hg 6S 7 and Cs 2Cd 3Te 4 compounds are 1.63 eV and 2.45 eV, respectively. The mobility-lifetime products for charge carriers are of the order of ∼10 -3 cm 2/V for electrons and ∼10 -4 cm 2/V for holes. Detectors fabricated from the ternary compound Cs 2Hg 6S 7 shows well-resolved spectroscopic features at room temperature in response to γ-rays at 122 keV from a 57Co source, indicating its potential as a radiation detector.",

author = "Peters, {J. A.} and Zhifu Liu and Wessels, {B. W.} and I. Androulakis and Sebastian, {C. P.} and Hao Li and Kanatzidis, {M. G.}",

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Peters, JA, Liu, Z, Wessels, BW, Androulakis, I, Sebastian, CP, Li, H & Kanatzidis, MG 2012, Alkali metal chalcogenides for radiation detection. in Nuclear Radiation Detection Materials - 2011. Materials Research Society Symposium Proceedings, vol. 1341, pp. 133-138, 2011 MRS Spring Meeting, San Francisco, CA, United States, 4/25/11. https://doi.org/10.1557/opl.2011.1482

Alkali metal chalcogenides for radiation detection. / Peters, J. A.; Liu, Zhifu; Wessels, B. W.; Androulakis, I.; Sebastian, C. P.; Li, Hao; Kanatzidis, M. G.

Nuclear Radiation Detection Materials - 2011. 2012. p. 133-138 (Materials Research Society Symposium Proceedings; Vol. 1341).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Li, Hao

AU - Kanatzidis, M. G.

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AB - We report on the optical and charge transport properties of novel alkali metal chalcogenides, Cs 2Hg 6S 7 and Cs 2Cd 3Te 4, pertaining to their use in radiation detection. Optical absorption, photoconductivity, and gamma ray response measurements for undoped crystals were measured. The band gap energies of the Cs 2Hg 6S 7 and Cs 2Cd 3Te 4 compounds are 1.63 eV and 2.45 eV, respectively. The mobility-lifetime products for charge carriers are of the order of ∼10 -3 cm 2/V for electrons and ∼10 -4 cm 2/V for holes. Detectors fabricated from the ternary compound Cs 2Hg 6S 7 shows well-resolved spectroscopic features at room temperature in response to γ-rays at 122 keV from a 57Co source, indicating its potential as a radiation detector.

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