Improvement of the CdTe diode detectors using a guard-ring electrode

Kazuhiro Nakazawa, Kousuke Oonuki, Takaaki Tanaka, Yoshihito Kobayashi, Ken'ichi Tamura, Takefumi Mitani, Goro Sato, Shin Watanabe, Tadayuki Takahashi, Ryoichi Ohno, Akihito Kitajima, Yoshikatsu Kuroda, Mitsunobu Onishi

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Recent results from the Schottky CdTe diode detectors employing a guard-ring (GR) electrode are reported. A cathode electrode, made of platinum, was separated into an active electrode(s) and a surrounding GR. Typical leakage current of a device with active area of 2 × 2 mm2 and 0.5 mm thickness surrounded by a GR, is 7 and 20 pA at a bias of 100 and 500 V, respectively, operated at 20°C. Spectral resolution of this device is 0.93 and 1.2 keV (FWHM) at 59.5 and 122 keV, respectively, operated at 20°C with a bias of 800 V. Detailed study of the characteristics of these devices working as a gamma-ray detector is presented.

Original languageEnglish
Pages (from-to)1881-1885
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume51
Issue number4 I
DOIs
Publication statusPublished - 2004 Aug

Fingerprint

Diodes
diodes
Detectors
Electrodes
electrodes
rings
detectors
Spectral resolution
Schottky diodes
Full width at half maximum
Leakage currents
Gamma rays
spectral resolution
Platinum
platinum
Cathodes
leakage
cathodes
gamma rays

Keywords

  • Cadmium telluride (CdTe)
  • Diode
  • Gamma-ray
  • Guard-ring (GR)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering

Cite this

Nakazawa, K., Oonuki, K., Tanaka, T., Kobayashi, Y., Tamura, K., Mitani, T., ... Onishi, M. (2004). Improvement of the CdTe diode detectors using a guard-ring electrode. IEEE Transactions on Nuclear Science, 51(4 I), 1881-1885. https://doi.org/10.1109/TNS.2004.832684

Improvement of the CdTe diode detectors using a guard-ring electrode. / Nakazawa, Kazuhiro; Oonuki, Kousuke; Tanaka, Takaaki; Kobayashi, Yoshihito; Tamura, Ken'ichi; Mitani, Takefumi; Sato, Goro; Watanabe, Shin; Takahashi, Tadayuki; Ohno, Ryoichi; Kitajima, Akihito; Kuroda, Yoshikatsu; Onishi, Mitsunobu.

In: IEEE Transactions on Nuclear Science, Vol. 51, No. 4 I, 08.2004, p. 1881-1885.

Research output: Contribution to journalArticle

Nakazawa, K, Oonuki, K, Tanaka, T, Kobayashi, Y, Tamura, K, Mitani, T, Sato, G, Watanabe, S, Takahashi, T, Ohno, R, Kitajima, A, Kuroda, Y & Onishi, M 2004, 'Improvement of the CdTe diode detectors using a guard-ring electrode', IEEE Transactions on Nuclear Science, vol. 51, no. 4 I, pp. 1881-1885. https://doi.org/10.1109/TNS.2004.832684
Nakazawa K, Oonuki K, Tanaka T, Kobayashi Y, Tamura K, Mitani T et al. Improvement of the CdTe diode detectors using a guard-ring electrode. IEEE Transactions on Nuclear Science. 2004 Aug;51(4 I):1881-1885. https://doi.org/10.1109/TNS.2004.832684
Nakazawa, Kazuhiro ; Oonuki, Kousuke ; Tanaka, Takaaki ; Kobayashi, Yoshihito ; Tamura, Ken'ichi ; Mitani, Takefumi ; Sato, Goro ; Watanabe, Shin ; Takahashi, Tadayuki ; Ohno, Ryoichi ; Kitajima, Akihito ; Kuroda, Yoshikatsu ; Onishi, Mitsunobu. / Improvement of the CdTe diode detectors using a guard-ring electrode. In: IEEE Transactions on Nuclear Science. 2004 ; Vol. 51, No. 4 I. pp. 1881-1885.
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