Hard Radiation Detection from the Selenophosphate Pb2P2Se6

Peng L. Wang, Zhifu Liu, Pice Chen, John A. Peters, Gangjian Tan, Jino Im, Wenwen Lin, Arthur J Freeman, Bruce W. Wessels, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The heavy metal selenophosphate, Pb2P2Se6, is a promising new material for cost-effective X-ray/γ-ray detection. Crystal boules of Pb2P2Se6 up to 25 mm in length and 15 mm in diameter are grown by a vertical Bridgman method. They are cut and processed into size-appropriate wafers for physical, photo-transport property studies, as well as γ-ray detector testing. The material is a semiconductor with an indirect bandgap of 1.88 eV and has electrical resistivity in the range of 1 × 1010 Ω cm. Pb2P2Se6 single crystal samples display a significant photoconductivity response to optical, X-ray, and γ-ray radiation. When tested with a 57Co γ-ray source, Pb2P2Se6 crystals show spectroscopic response and several generated pulse height spectra resolving the 122.1 and 136.5 keV 57Co radiation. The mobility-lifetime product of Pb2P2Se6 is estimated to be ≈3.5 × 10-5 cm2 V-1 for electron carriers. The Pb2P2Se6 compound melts congruently at 812 °C and has robust chemical/physical properties that promise low cost bulk production and detector development. Wide bandgap selenophosphate Pb2P2Se6 is identified as a cost-effective X-ray and γ-ray detector material. The crystal growth of Pb2P2Se6 and characterizations in terms of its optical, electrical, thermal, and mechanical properties are reported. A Pb2P2Se6 single crystal detector is able to resolve 57Co radiation.

Original languageEnglish
Pages (from-to)4874-4881
Number of pages8
JournalAdvanced Functional Materials
Volume25
Issue number30
DOIs
Publication statusPublished - Aug 1 2015

Fingerprint

rays
Detectors
Radiation
radiation
X rays
detectors
Energy gap
Single crystals
Costs
Crystals
Crystal growth from melt
boules
Photoconductivity
costs
Heavy Metals
Crystallization
Crystal growth
x rays
Bridgman method
Transport properties

Keywords

  • chalcogenides
  • chalcophosphate
  • gamma-ray detectors
  • semiconductors

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Hard Radiation Detection from the Selenophosphate Pb2P2Se6. / Wang, Peng L.; Liu, Zhifu; Chen, Pice; Peters, John A.; Tan, Gangjian; Im, Jino; Lin, Wenwen; Freeman, Arthur J; Wessels, Bruce W.; Kanatzidis, Mercouri G.

In: Advanced Functional Materials, Vol. 25, No. 30, 01.08.2015, p. 4874-4881.

Research output: Contribution to journalArticle

Wang, PL, Liu, Z, Chen, P, Peters, JA, Tan, G, Im, J, Lin, W, Freeman, AJ, Wessels, BW & Kanatzidis, MG 2015, 'Hard Radiation Detection from the Selenophosphate Pb2P2Se6', Advanced Functional Materials, vol. 25, no. 30, pp. 4874-4881. https://doi.org/10.1002/adfm.201501826
Wang PL, Liu Z, Chen P, Peters JA, Tan G, Im J et al. Hard Radiation Detection from the Selenophosphate Pb2P2Se6. Advanced Functional Materials. 2015 Aug 1;25(30):4874-4881. https://doi.org/10.1002/adfm.201501826
Wang, Peng L. ; Liu, Zhifu ; Chen, Pice ; Peters, John A. ; Tan, Gangjian ; Im, Jino ; Lin, Wenwen ; Freeman, Arthur J ; Wessels, Bruce W. ; Kanatzidis, Mercouri G. / Hard Radiation Detection from the Selenophosphate Pb2P2Se6. In: Advanced Functional Materials. 2015 ; Vol. 25, No. 30. pp. 4874-4881.
@article{8d19397f09f64a03aa9c1b90eec0c5e8,
title = "Hard Radiation Detection from the Selenophosphate Pb2P2Se6",
abstract = "The heavy metal selenophosphate, Pb2P2Se6, is a promising new material for cost-effective X-ray/γ-ray detection. Crystal boules of Pb2P2Se6 up to 25 mm in length and 15 mm in diameter are grown by a vertical Bridgman method. They are cut and processed into size-appropriate wafers for physical, photo-transport property studies, as well as γ-ray detector testing. The material is a semiconductor with an indirect bandgap of 1.88 eV and has electrical resistivity in the range of 1 × 1010 Ω cm. Pb2P2Se6 single crystal samples display a significant photoconductivity response to optical, X-ray, and γ-ray radiation. When tested with a 57Co γ-ray source, Pb2P2Se6 crystals show spectroscopic response and several generated pulse height spectra resolving the 122.1 and 136.5 keV 57Co radiation. The mobility-lifetime product of Pb2P2Se6 is estimated to be ≈3.5 × 10-5 cm2 V-1 for electron carriers. The Pb2P2Se6 compound melts congruently at 812 °C and has robust chemical/physical properties that promise low cost bulk production and detector development. Wide bandgap selenophosphate Pb2P2Se6 is identified as a cost-effective X-ray and γ-ray detector material. The crystal growth of Pb2P2Se6 and characterizations in terms of its optical, electrical, thermal, and mechanical properties are reported. A Pb2P2Se6 single crystal detector is able to resolve 57Co radiation.",
keywords = "chalcogenides, chalcophosphate, gamma-ray detectors, semiconductors",
author = "Wang, {Peng L.} and Zhifu Liu and Pice Chen and Peters, {John A.} and Gangjian Tan and Jino Im and Wenwen Lin and Freeman, {Arthur J} and Wessels, {Bruce W.} and Kanatzidis, {Mercouri G}",
year = "2015",
month = "8",
day = "1",
doi = "10.1002/adfm.201501826",
language = "English",
volume = "25",
pages = "4874--4881",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",
number = "30",

}

TY - JOUR

T1 - Hard Radiation Detection from the Selenophosphate Pb2P2Se6

AU - Wang, Peng L.

AU - Liu, Zhifu

AU - Chen, Pice

AU - Peters, John A.

AU - Tan, Gangjian

AU - Im, Jino

AU - Lin, Wenwen

AU - Freeman, Arthur J

AU - Wessels, Bruce W.

AU - Kanatzidis, Mercouri G

PY - 2015/8/1

Y1 - 2015/8/1

N2 - The heavy metal selenophosphate, Pb2P2Se6, is a promising new material for cost-effective X-ray/γ-ray detection. Crystal boules of Pb2P2Se6 up to 25 mm in length and 15 mm in diameter are grown by a vertical Bridgman method. They are cut and processed into size-appropriate wafers for physical, photo-transport property studies, as well as γ-ray detector testing. The material is a semiconductor with an indirect bandgap of 1.88 eV and has electrical resistivity in the range of 1 × 1010 Ω cm. Pb2P2Se6 single crystal samples display a significant photoconductivity response to optical, X-ray, and γ-ray radiation. When tested with a 57Co γ-ray source, Pb2P2Se6 crystals show spectroscopic response and several generated pulse height spectra resolving the 122.1 and 136.5 keV 57Co radiation. The mobility-lifetime product of Pb2P2Se6 is estimated to be ≈3.5 × 10-5 cm2 V-1 for electron carriers. The Pb2P2Se6 compound melts congruently at 812 °C and has robust chemical/physical properties that promise low cost bulk production and detector development. Wide bandgap selenophosphate Pb2P2Se6 is identified as a cost-effective X-ray and γ-ray detector material. The crystal growth of Pb2P2Se6 and characterizations in terms of its optical, electrical, thermal, and mechanical properties are reported. A Pb2P2Se6 single crystal detector is able to resolve 57Co radiation.

AB - The heavy metal selenophosphate, Pb2P2Se6, is a promising new material for cost-effective X-ray/γ-ray detection. Crystal boules of Pb2P2Se6 up to 25 mm in length and 15 mm in diameter are grown by a vertical Bridgman method. They are cut and processed into size-appropriate wafers for physical, photo-transport property studies, as well as γ-ray detector testing. The material is a semiconductor with an indirect bandgap of 1.88 eV and has electrical resistivity in the range of 1 × 1010 Ω cm. Pb2P2Se6 single crystal samples display a significant photoconductivity response to optical, X-ray, and γ-ray radiation. When tested with a 57Co γ-ray source, Pb2P2Se6 crystals show spectroscopic response and several generated pulse height spectra resolving the 122.1 and 136.5 keV 57Co radiation. The mobility-lifetime product of Pb2P2Se6 is estimated to be ≈3.5 × 10-5 cm2 V-1 for electron carriers. The Pb2P2Se6 compound melts congruently at 812 °C and has robust chemical/physical properties that promise low cost bulk production and detector development. Wide bandgap selenophosphate Pb2P2Se6 is identified as a cost-effective X-ray and γ-ray detector material. The crystal growth of Pb2P2Se6 and characterizations in terms of its optical, electrical, thermal, and mechanical properties are reported. A Pb2P2Se6 single crystal detector is able to resolve 57Co radiation.

KW - chalcogenides

KW - chalcophosphate

KW - gamma-ray detectors

KW - semiconductors

UR - http://www.scopus.com/inward/record.url?scp=84938963301&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938963301&partnerID=8YFLogxK

U2 - 10.1002/adfm.201501826

DO - 10.1002/adfm.201501826

M3 - Article

VL - 25

SP - 4874

EP - 4881

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

IS - 30

ER -