Photoconductivity in the chalcohalide semiconductor, SbSeI

A new candidate for hard radiation detection

Arief C. Wibowo, Christos D. Malliakas, Zhifu Liu, John A. Peters, Maria Sebastian, Duck Young Chung, Bruce W. Wessels, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We investigated an antimony chalcohalide compound, SbSeI, as a potential semiconductor material for X-ray and γ-ray detection. SbSeI has a wide band gap of 1.70 eV with a density of 5.80 g/cm3, and it crystallizes in the orthorhombic Pnma space group with a one-dimensional chain structure comprised of infinite zigzag chains of dimers [Sb2Se 4I8]n running along the crystallographic b axis. In this study, we investigate conditions for vertical Bridgman crystal growth using combinations of the peak temperature and temperature gradients as well as translation rate set in a three-zone furnace. SbSeI samples grown at 495 C peak temperature and 19 C/cm temperature gradient with 2.5 mm/h translation rate produced a single phase of columnar needlelike crystals aligned along the translational direction of the growth. The ingot sample exhibited an n-type semiconductor with resistivity of ∼108 Ω·cm. Photoconductivity measurements on these specimens allowed us to determine mobility-lifetime (μτ) products for electron and hole carriers that were found to be of similar order of magnitude (∼10-4 cm 2/V). Further, the SbSeI ingot with well-aligned, one-dimensional columnar needlelike crystals shows an appreciable response of Ag Kα X-ray.

Original languageEnglish
Pages (from-to)7045-7050
Number of pages6
JournalInorganic Chemistry
Volume52
Issue number12
DOIs
Publication statusPublished - Jun 17 2013

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Photoconductivity
ingots
Ingots
photoconductivity
Thermal gradients
temperature gradients
Antimony compounds
antimony compounds
Semiconductor materials
Radiation
X rays
Crystals
n-type semiconductors
radiation
Crystallization
Dimers
crystals
furnaces
crystal growth
rays

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Photoconductivity in the chalcohalide semiconductor, SbSeI : A new candidate for hard radiation detection. / Wibowo, Arief C.; Malliakas, Christos D.; Liu, Zhifu; Peters, John A.; Sebastian, Maria; Chung, Duck Young; Wessels, Bruce W.; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 52, No. 12, 17.06.2013, p. 7045-7050.

Research output: Contribution to journalArticle

Wibowo, AC, Malliakas, CD, Liu, Z, Peters, JA, Sebastian, M, Chung, DY, Wessels, BW & Kanatzidis, MG 2013, 'Photoconductivity in the chalcohalide semiconductor, SbSeI: A new candidate for hard radiation detection', Inorganic Chemistry, vol. 52, no. 12, pp. 7045-7050. https://doi.org/10.1021/ic401086r
Wibowo AC, Malliakas CD, Liu Z, Peters JA, Sebastian M, Chung DY et al. Photoconductivity in the chalcohalide semiconductor, SbSeI: A new candidate for hard radiation detection. Inorganic Chemistry. 2013 Jun 17;52(12):7045-7050. https://doi.org/10.1021/ic401086r
Wibowo, Arief C. ; Malliakas, Christos D. ; Liu, Zhifu ; Peters, John A. ; Sebastian, Maria ; Chung, Duck Young ; Wessels, Bruce W. ; Kanatzidis, Mercouri G. / Photoconductivity in the chalcohalide semiconductor, SbSeI : A new candidate for hard radiation detection. In: Inorganic Chemistry. 2013 ; Vol. 52, No. 12. pp. 7045-7050.
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