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Proceedings Paper

Charge carrier transport in barrier “in-macroporous silicon” structures
Author(s): Lyudmyla Karachevtseva; Volodimir Onishchenko; Fiodor Sizov; Andriy Sukach; Volodimir Teterkin
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Paper Abstract

Charge carrier transport mechanism in barrier "In-macroporous silicon" structures has been investigated. Currentvoltage, capacitance-voltage, photoelectrical and noise characteristics were analyzed comparatively in structures of macroporous and single-crystal silicon. There has been designed manufacture technology of ohmic and barrier contacts on 2D macroporous silicon as well as single-crystal silicon in the same technological cycle. The contacts were found to exhibit stable characteristics during six month period of time. The saturation of the reverse current at 0.2 ≤ U ≤ 1.0 V was observed at high temperatures. The carrier transport mechanism in the investigated structures are determined by thermal activation mechanisms at room temperature and tunneling of carriers through the transient region at temperatures T ≤ 180 K. Capacitance-voltage characteristics are similar to those observed in the metal-oxide-semiconductor structures and are included capacitance of the oxide layer and the depletion region. The presence of the transient region between metal and silicon was confirmed by the photoresponse spectra of "Inmacroporous Si" structures contained two pronounced peaks at the wavelengths 0.56 and 1.1 μm. The longwavelength peak was observed for In contacts on single n-Si crystal prepared by the same method.

Paper Details

Date Published: 28 February 2006
PDF: 10 pages
Proc. SPIE 6127, Quantum Sensing and Nanophotonic Devices III, 61270O (28 February 2006); doi: 10.1117/12.644143
Show Author Affiliations
Lyudmyla Karachevtseva, V. Lashkariov Institute of Semiconductor Physics (Ukraine)
Volodimir Onishchenko, V. Lashkariov Institute of Semiconductor Physics (Ukraine)
Fiodor Sizov, V. Lashkariov Institute of Semiconductor Physics (Ukraine)
Andriy Sukach, V. Lashkariov Institute of Semiconductor Physics (Ukraine)
Volodimir Teterkin, V. Lashkariov Institute of Semiconductor Physics (Ukraine)

Published in SPIE Proceedings Vol. 6127:
Quantum Sensing and Nanophotonic Devices III
Manijeh Razeghi; Gail J. Brown, Editor(s)

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