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Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Sensors and Materials, Volume 30, Number 7(2) (2018)
Copyright(C) MYU K.K.
pp. 1605-1610
S&M1617 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2018.1929
Published: July 27, 2018

Carrier Transport Properties of CdTe Detector under Polarization Condition [PDF]

Hisaya Nakagawa, Tsuyoshi Terao, Tomoaki Masuzawa, Tetsu Ito, Akifumi Koike, Hisashi Morii, and Toru Aoki

(Received February 1, 2018; Accepted April 25, 2018)

Keywords: radiation detector, semiconductor detector, CdTe, polarization, carrier transport properties

Cadmium telluride (CdTe) is a promising material for semiconductor-based roomtemperature radiation detectors because of its wide bandgap and relatively good carrier transport properties. One remaining issue of CdTe detectors is an instability arising in longterm operation. This instability, called polarization, is explained by charge accumulation due to carrier trapping/detrapping at deep defect levels. However, previous explanations did not include carrier transport in CdTe. In this study, we have investigated carrier transport properties by measuring the carrier transit time at each stage of polarization. As a result, we have developed a polarization model including carrier transport and calculated the electric field distribution across the CdTe detector during polarization.

Corresponding author: Hisaya Nakagawa


Cite this article
Hisaya Nakagawa, Tsuyoshi Terao, Tomoaki Masuzawa, Tetsu Ito, Akifumi Koike, Hisashi Morii, and Toru Aoki, Carrier Transport Properties of CdTe Detector under Polarization Condition, Sens. Mater., Vol. 30, No. 7, 2018, p. 1605-1610.



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