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Betavoltaic effect in titanium dioxide nanotube arrays under build-in potential difference.
- Source :
-
Journal of Power Sources . May2015, Vol. 282, p529-533. 5p. - Publication Year :
- 2015
-
Abstract
- We report the fabrication of sandwich-type metal/TiO 2 nanotube (TNT) array/metal structures as well as their betavoltaic effects under build-in voltage through contact potential difference. The sandwiched structure is integrated by immobilized TNT arrays on Ti foil with radioisotope 63 Ni planar source on Ni substrate (Ni– 63 Ni/TNT array/Ti). Under irradiation of the 63 Ni source with activity of 8 mCi, the structure (TNT diameter ∼ 130 nm, length ∼ 11 μm) presents optimum energy conversion efficiency of 7.30% with open-circuit voltage of 1.54 V and short-circuit current of 12.43 nA. The TNT arrays exhibit a highly potential for developing betavoltaic batteries due to its wide band gap and nanotube array configuration. The TNT-betavoltaic concept offers a facile solution for micro/nano electronics with high efficiency and long life-time instead of conventional planar junction-type batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 282
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 101494691
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2015.02.094