TITLE

Power-scaling performance of a three-dimensional tritium betavoltaic diode

AUTHOR(S)
Liu, Baojun; Chen, Kevin P.; Kherani, Nazir P.; Zukotynski, Stefan
PUB. DATE
December 2009
SOURCE
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p233112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Three-dimensional diodes fabricated by electrochemical etching are exposed to tritium gas at pressures from 0.05 to 33 atm at room temperature to examine its power scaling performance. It is shown that the three-dimensional microporous structure overcomes the self-absorption limited saturation of beta flux at high tritium pressures. These results are contrasted against the three-dimensional device powered in one instance by tritium absorbed in the near surface region of the three-dimensional microporous network, and in another by a planar scandium tritide foil. These findings suggest that direct tritium occlusion in the near surface of three-dimensional diode can improve the specific power production.
ACCESSION #
46708376

 

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