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Proceedings Paper

Alpha Schottky junction energy source
Author(s): Marc S. Litz; Zhaoyang Fan; James J. Carroll; Stephen Bayne
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Paper Abstract

Isotope batteries offer solutions for long-lived low-power sensor requirements. Alpha emitting isotopes have energy per decay 103 times that of beta emitters. Alpha particles are absorbed within 20 μm of most materials reducing shielding mitigation. However, damage to materials from the alphas limits their practical use. A Schottky Barrier Diode (SBD) geometry is considered with an alpha emitting contact-layer on a diamond-like crystal semiconductor region. The radiation tolerance of diamond, the safety of alpha particles, combined with the internal field of the SBD is expected to generate current useful for low-power electronic devices over decades. Device design parameters and calculations of the expected current are described.

Paper Details

Date Published: 24 May 2012
PDF: 9 pages
Proc. SPIE 8377, Energy Harvesting and Storage: Materials, Devices, and Applications III, 83770R (24 May 2012); doi: 10.1117/12.918588
Show Author Affiliations
Marc S. Litz, U.S. Army Research Lab. (United States)
Zhaoyang Fan, Texas Tech Univ. (United States)
James J. Carroll, U.S. Army Research Lab. (United States)
Stephen Bayne, Texas Tech Univ. (United States)


Published in SPIE Proceedings Vol. 8377:
Energy Harvesting and Storage: Materials, Devices, and Applications III
Nibir K. Dhar; Priyalal S. Wijewarnasuriya; Achyut K. Dutta, Editor(s)

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