Paper
24 May 2012 Alpha Schottky junction energy source
Marc S. Litz, Zhaoyang Fan, James J. Carroll, Stephen Bayne
Author Affiliations +
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marc S. Litz, Zhaoyang Fan, James J. Carroll, and Stephen Bayne "Alpha Schottky junction energy source", Proc. SPIE 8377, Energy Harvesting and Storage: Materials, Devices, and Applications III, 83770R (24 May 2012); https://doi.org/10.1117/12.918588
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KEYWORDS
Diamond

Sensors

Particles

Semiconductors

Crystals

Silicon carbide

Carbon

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