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Proceedings Paper

Electronic devices based upon Germanium nano-crystals with durability to strong neutron irradiation
Author(s): Itamar Baron; Shai Levy; Avraham Chelly; Zeev Zalevsky; Ofer Limon; Shaobo Dun; Tiecheng Lu; Issai Shlimak
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Paper Abstract

In this paper we present the preliminary experimental characterization of electronic devices based upon Germanium nano-crystals (nc-Ge) embedded in thick SiO2 films grown on a Si substrate. The samples were prepared using Ge ion implantation followed by thermal annealing. Typical diameter of the nc-Ge is shown to be in the range of 4- 10nm. Gold (Au) contacts were deposited on the top of the oxide surface allowing measurements of the electronic properties. We present preliminary experimental results of electronic properties of the nc-Ge based devices including current-voltage (I-V) and capacitance-voltage (C-V) curves of the nano-devices while illuminated by white light and an external laser at a wavelength of 532nm for various levels of intensity. The characterization curves were also obtained at different temperatures. The proposed technology of devices based on nc-Ge was proven to be insensitive to high doses of irradiation by neutrons in a research nuclear reactor, which suggests that these nc-Ge devices can be used under extreme working conditions such as strong cosmic radiation appearing in outer space.

Paper Details

Date Published: 26 August 2008
PDF: 7 pages
Proc. SPIE 7095, Nanophotonics and Macrophotonics for Space Environments II, 709502 (26 August 2008); doi: 10.1117/12.795667
Show Author Affiliations
Itamar Baron, Bar-Ilan Univ. (Israel)
Shai Levy, Bar-Ilan Univ. (Israel)
Avraham Chelly, Bar-Ilan Univ. (Israel)
Zeev Zalevsky, Bar-Ilan Univ. (Israel)
Ofer Limon, Bar-Ilan Univ. (Israel)
Shaobo Dun, Sichuan Univ. (China)
Tiecheng Lu, Sichuan Univ. (China)
Issai Shlimak, Bar-Ilan Univ. (Israel)

Published in SPIE Proceedings Vol. 7095:
Nanophotonics and Macrophotonics for Space Environments II
Edward W. Taylor; David A. Cardimona, Editor(s)

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