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6CCVD Research

Single crystal CVD diamond membranes for betavoltaic cells

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2016-06-20
JournalApplied Physics Letters
AuthorsColin Delfaure, M. Pomorski, J. de Sanoit, P. Bergonzo, S. Saada
InstitutionsCommissariat Ć  lā€™Ć‰nergie Atomique et aux Ɖnergies Alternatives, CEA LIST
Citations59

Abstract

Section titled ā€œAbstractā€

A single crystal diamond large area thin membrane was assembled as a p-doped/Intrinsic/Metal (PIM) structure and used in a betavoltaic configuration. When tested with a 20 keV electron beam from a high resolution scanning electron microscope, we measured an open circuit voltage (Voc) of 1.85 V, a charge collection efficiency (CCE) of 98%, a fill-factor of 80%, and a total conversion efficiency of 9.4%. These parameters are inherently linked to the diamond membrane PIM structure that allows full device depletion even at 0 V and are among the highest reported up to now for any other material tested for betavoltaic devices. It enables to drive a high short-circuit current Isc up to 7.12 Ī¼A, to reach a maximum power Pmax of 10.48 Ī¼W, a remarkable value demonstrating the high-benefit of diamond for the realization of long-life radioisotope based micro-batteries.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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