Alpha Schottky junction energy source

Marc S. Litz, Zhaoyang Fan, James J. Carroll, Stephen Bayne

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Isotope batteries offer solutions for long-lived low-power sensor requirements. Alpha emitting isotopes have energy per decay 10 3 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.

Original languageEnglish (US)
Title of host publicationEnergy Harvesting and Storage
Subtitle of host publicationMaterials, Devices, and Applications III
StatePublished - 2012
Externally publishedYes
EventEnergy Harvesting and Storage: Materials, Devices, and Applications III - Baltimore, MD, United States
Duration: Apr 23 2012Apr 24 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceEnergy Harvesting and Storage: Materials, Devices, and Applications III
Country/TerritoryUnited States
CityBaltimore, MD


  • Alpha emitter
  • Isotope power source

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Alpha Schottky junction energy source'. Together they form a unique fingerprint.

Cite this