New insights for uniform and large-volume CdZnTe and CdMnTe detectors

Kihyun Kim, A. E. Bolotnikov, G. S. Camarda, R. Tappero, Y. Cui, A. Hossain, J. Franc, L. Marchini, A. Zappettini, P. Fochuk, R. Gul, G. Yang, R. B. James

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

2 Citations (Scopus)

Abstract

CdZnTe (CZT) and CdMnTe (CMT) materials come into the spotlight for room-temperature semiconductor detectors. Nonethelss, both materials still have limitations for the production of economical, uniform, and large-volume devices due to the zinc (Zn) segregation in CZT and manganese purity in CMT. The effective segregation coefficient of Zn in the CdTe host is nearly 1.3, so about 5-6% of Zn deviation has been reported in Bridgman-grown CZT (Zn=10%) ingots. Such Zn non-uniformity limits the cutting of the ingot parallel to the crystal growth direction for producing large-volume CZT detectors due to the signal non-uniformity that would be generated by the band-gap variations. However, our recent findings show that the Zn segregation can be controlled by the specific thermal environment. The high residual impurities in the starting source materials, especially for manganese, were obstacles for obtaining high-performance CMT detectors. The purification of manganese telluride (MnTe) by a floating Te melt-zone proved to be very effective, and CMT detectors fabricated with purified material give a 2.1% energy resolution for 662 keV associated with a 137Cs gamma source.

Original languageEnglish
Title of host publication2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
Pages4751-4755
Number of pages5
DOIs
Publication statusPublished - 2012 Mar 26
Externally publishedYes
Event2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 - Valencia, Spain
Duration: 2011 Oct 232011 Oct 29

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
CountrySpain
CityValencia
Period11/10/2311/10/29

Fingerprint

Zinc
zinc
detectors
Manganese
manganese
ingots
nonuniformity
thermal environments
Semiconductors
tellurides
Crystallization
purification
floating
CdZnTe
crystal growth
purity
Hot Temperature
deviation
Equipment and Supplies
impurities

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Kim, K., Bolotnikov, A. E., Camarda, G. S., Tappero, R., Cui, Y., Hossain, A., ... James, R. B. (2012). New insights for uniform and large-volume CdZnTe and CdMnTe detectors. In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 (pp. 4751-4755). [6154708] (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2011.6154708

New insights for uniform and large-volume CdZnTe and CdMnTe detectors. / Kim, Kihyun; Bolotnikov, A. E.; Camarda, G. S.; Tappero, R.; Cui, Y.; Hossain, A.; Franc, J.; Marchini, L.; Zappettini, A.; Fochuk, P.; Gul, R.; Yang, G.; James, R. B.

2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011. 2012. p. 4751-4755 6154708 (IEEE Nuclear Science Symposium Conference Record).

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

Kim, K, Bolotnikov, AE, Camarda, GS, Tappero, R, Cui, Y, Hossain, A, Franc, J, Marchini, L, Zappettini, A, Fochuk, P, Gul, R, Yang, G & James, RB 2012, New insights for uniform and large-volume CdZnTe and CdMnTe detectors. in 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011., 6154708, IEEE Nuclear Science Symposium Conference Record, pp. 4751-4755, 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011, Valencia, Spain, 11/10/23. https://doi.org/10.1109/NSSMIC.2011.6154708
Kim K, Bolotnikov AE, Camarda GS, Tappero R, Cui Y, Hossain A et al. New insights for uniform and large-volume CdZnTe and CdMnTe detectors. In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011. 2012. p. 4751-4755. 6154708. (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2011.6154708
Kim, Kihyun ; Bolotnikov, A. E. ; Camarda, G. S. ; Tappero, R. ; Cui, Y. ; Hossain, A. ; Franc, J. ; Marchini, L. ; Zappettini, A. ; Fochuk, P. ; Gul, R. ; Yang, G. ; James, R. B. / New insights for uniform and large-volume CdZnTe and CdMnTe detectors. 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011. 2012. pp. 4751-4755 (IEEE Nuclear Science Symposium Conference Record).
@inproceedings{8fc7e25fec724052a06cb750693a9a31,
title = "New insights for uniform and large-volume CdZnTe and CdMnTe detectors",
abstract = "CdZnTe (CZT) and CdMnTe (CMT) materials come into the spotlight for room-temperature semiconductor detectors. Nonethelss, both materials still have limitations for the production of economical, uniform, and large-volume devices due to the zinc (Zn) segregation in CZT and manganese purity in CMT. The effective segregation coefficient of Zn in the CdTe host is nearly 1.3, so about 5-6{\%} of Zn deviation has been reported in Bridgman-grown CZT (Zn=10{\%}) ingots. Such Zn non-uniformity limits the cutting of the ingot parallel to the crystal growth direction for producing large-volume CZT detectors due to the signal non-uniformity that would be generated by the band-gap variations. However, our recent findings show that the Zn segregation can be controlled by the specific thermal environment. The high residual impurities in the starting source materials, especially for manganese, were obstacles for obtaining high-performance CMT detectors. The purification of manganese telluride (MnTe) by a floating Te melt-zone proved to be very effective, and CMT detectors fabricated with purified material give a 2.1{\%} energy resolution for 662 keV associated with a 137Cs gamma source.",
author = "Kihyun Kim and Bolotnikov, {A. E.} and Camarda, {G. S.} and R. Tappero and Y. Cui and A. Hossain and J. Franc and L. Marchini and A. Zappettini and P. Fochuk and R. Gul and G. Yang and James, {R. B.}",
year = "2012",
month = "3",
day = "26",
doi = "10.1109/NSSMIC.2011.6154708",
language = "English",
isbn = "9781467301183",
series = "IEEE Nuclear Science Symposium Conference Record",
pages = "4751--4755",
booktitle = "2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011",

}

TY - GEN

T1 - New insights for uniform and large-volume CdZnTe and CdMnTe detectors

AU - Kim, Kihyun

AU - Bolotnikov, A. E.

AU - Camarda, G. S.

AU - Tappero, R.

AU - Cui, Y.

AU - Hossain, A.

AU - Franc, J.

AU - Marchini, L.

AU - Zappettini, A.

AU - Fochuk, P.

AU - Gul, R.

AU - Yang, G.

AU - James, R. B.

PY - 2012/3/26

Y1 - 2012/3/26

N2 - CdZnTe (CZT) and CdMnTe (CMT) materials come into the spotlight for room-temperature semiconductor detectors. Nonethelss, both materials still have limitations for the production of economical, uniform, and large-volume devices due to the zinc (Zn) segregation in CZT and manganese purity in CMT. The effective segregation coefficient of Zn in the CdTe host is nearly 1.3, so about 5-6% of Zn deviation has been reported in Bridgman-grown CZT (Zn=10%) ingots. Such Zn non-uniformity limits the cutting of the ingot parallel to the crystal growth direction for producing large-volume CZT detectors due to the signal non-uniformity that would be generated by the band-gap variations. However, our recent findings show that the Zn segregation can be controlled by the specific thermal environment. The high residual impurities in the starting source materials, especially for manganese, were obstacles for obtaining high-performance CMT detectors. The purification of manganese telluride (MnTe) by a floating Te melt-zone proved to be very effective, and CMT detectors fabricated with purified material give a 2.1% energy resolution for 662 keV associated with a 137Cs gamma source.

AB - CdZnTe (CZT) and CdMnTe (CMT) materials come into the spotlight for room-temperature semiconductor detectors. Nonethelss, both materials still have limitations for the production of economical, uniform, and large-volume devices due to the zinc (Zn) segregation in CZT and manganese purity in CMT. The effective segregation coefficient of Zn in the CdTe host is nearly 1.3, so about 5-6% of Zn deviation has been reported in Bridgman-grown CZT (Zn=10%) ingots. Such Zn non-uniformity limits the cutting of the ingot parallel to the crystal growth direction for producing large-volume CZT detectors due to the signal non-uniformity that would be generated by the band-gap variations. However, our recent findings show that the Zn segregation can be controlled by the specific thermal environment. The high residual impurities in the starting source materials, especially for manganese, were obstacles for obtaining high-performance CMT detectors. The purification of manganese telluride (MnTe) by a floating Te melt-zone proved to be very effective, and CMT detectors fabricated with purified material give a 2.1% energy resolution for 662 keV associated with a 137Cs gamma source.

UR - http://www.scopus.com/inward/record.url?scp=84863372759&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863372759&partnerID=8YFLogxK

U2 - 10.1109/NSSMIC.2011.6154708

DO - 10.1109/NSSMIC.2011.6154708

M3 - Conference contribution

AN - SCOPUS:84863372759

SN - 9781467301183

T3 - IEEE Nuclear Science Symposium Conference Record

SP - 4751

EP - 4755

BT - 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011

ER -