Alkali metal chalcogenides for radiation detection

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

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

3 Citations (Scopus)

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 languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages133-138
Number of pages6
Volume1341
DOIs
Publication statusPublished - 2012
Event2011 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 25 2011Apr 29 2011

Other

Other2011 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/25/114/29/11

Fingerprint

Alkali Metals
Chalcogenides
Radiation detectors
chalcogenides
Photoconductivity
Alkali metals
Charge carriers
Gamma rays
Transport properties
alkali metals
Light absorption
Charge transfer
rays
Energy gap
Detectors
Radiation
Crystals
Electrons
radiation
radiation detectors

ASJC Scopus subject areas

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

Cite this

Peters, J. A., Liu, Z., Wessels, B. W., Androulakis, I., Sebastian, C. P., Li, H., & Kanatzidis, M. G. (2012). Alkali metal chalcogenides for radiation detection. In Materials Research Society Symposium Proceedings (Vol. 1341, pp. 133-138) 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, Mercouri G.

Materials Research Society Symposium Proceedings. Vol. 1341 2012. p. 133-138.

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

Peters, JA, Liu, Z, Wessels, BW, Androulakis, I, Sebastian, CP, Li, H & Kanatzidis, MG 2012, Alkali metal chalcogenides for radiation detection. in 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
Peters JA, Liu Z, Wessels BW, Androulakis I, Sebastian CP, Li H et al. Alkali metal chalcogenides for radiation detection. In Materials Research Society Symposium Proceedings. Vol. 1341. 2012. p. 133-138 https://doi.org/10.1557/opl.2011.1482
Peters, J. A. ; Liu, Zhifu ; Wessels, B. W. ; Androulakis, I. ; Sebastian, C. P. ; Li, Hao ; Kanatzidis, Mercouri G. / Alkali metal chalcogenides for radiation detection. Materials Research Society Symposium Proceedings. Vol. 1341 2012. pp. 133-138
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