Abstract
Results obtained in a study of spectrometric characteristics of arrays of four detectors based on 4H-SiC ion-implantation-doped p +-n junctions in the temperature range 25–140 °C are reported for the first time. The junctions were fabricated by ion implantation of aluminum into epitaxial 4H-SiC layers of thickness ≤45 μm, grown by chemical vapor deposition with uncompensated donor concentration N d − N a = (4–6) × 1014 cm−3. The structural features of the ion-implantation-doped p +-layers were studied by secondary-ion mass spectrometry, transmission electron microscopy, and Rutherford backscattering spectroscopy in the channeling mode. Parameters of the diode arrays were determined by testing in air with natural-decay alpha particles with an energy of 3.76 MeV. The previously obtained data for similar single detectors were experimentally confirmed: the basic characteristics of the detector arrays, the charge collection efficiency and energy resolution, are improved as the working temperature increases.
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Original Russian Text © E.V. Kalinina, N.B. Strokan, A.M. Ivanov, A.A. Sitnikova, A.V. Sadokhin, A.Yu. Azarov, V.G. Kossov, R.R. Yafaev, 2008, published in Fizika i Tekhnika Poluprovodnikov, 2008, Vol. 42, No. 1, pp. 87–93.
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Kalinina, E.V., Strokan, N.B., Ivanov, A.M. et al. High-temperature nuclear-detector arrays based on 4 H-SiC ion-implantation-doped p +-n junctions. Semiconductors 42, 86–91 (2008). https://doi.org/10.1134/S1063782608010120
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DOI: https://doi.org/10.1134/S1063782608010120