Feasibility of CVD diamond radiation energy conversion devices

D.M. Trucchi, E. Cappelli, N. Lisi, P. Ascarelli

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Abstract

We analyzed the feasibility of CVD diamond to operate as the main component in active devices for conversion of high-energy radiation into electrical power. A self-sustained radiation dosimeter based on the electron emission effect was designed and tested under low-energy X-ray beam (Mg X-ray tube). The device operative conditions (absence of applied bias voltage) represented also the first experimental test towards the development of diamond energy conversion systems. On this basis, we designed a CVD diamond vacuum radiation energy converter and analyzed it using electron beams. An analysis of the performance was obtained letting both electron flux I0and kinetic energy E0to vary. For E0= 1 keV the power exploited by a load was estimated as tenths of nW and the total conversion efficiency was between 0.2 and 0.4%. This performance makes the device nominally competitive if compared to other similar solid-state converters. A discussion about the device design and possible improvements was performed in order to rationalize the conditions able to maximize the energy conversion efficiency. © 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1980 - 1985
Number of pages6
JournalDiamond and Related Materials
Volume15
Issue number11-12 SPEC. ISS.
DOIs
Publication statusPublished - Nov 2006

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

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