A1 Journal article (refereed)
Energy conversion efficiency in betavoltaic cells based on the diamond Schottky diode with a thin drift layer (2020)

Grushko, V., Beliuskina, O., Mamalis, A., Lysakovskiy, V., Mitskevich, E., Kiriev, A., Petrosyan, E., Chaplynskyi, R., Bezshyyko, O., & Lysenko, O. (2020). Energy conversion efficiency in betavoltaic cells based on the diamond Schottky diode with a thin drift layer. Applied Radiation and Isotopes, 157, Article 109017. https://doi.org/10.1016/j.apradiso.2019.109017

JYU authors or editors

Publication details

All authors or editors: Grushko, V.; Beliuskina, O.; Mamalis, A.; Lysakovskiy, V.; Mitskevich, E.; Kiriev, A.; Petrosyan, E.; Chaplynskyi, R.; Bezshyyko, O.; Lysenko, O.

Journal or series: Applied Radiation and Isotopes

ISSN: 0969-8043

eISSN: 1872-9800

Publication year: 2020

Volume: 157

Article number: 109017

Publisher: Elsevier Ltd

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/j.apradiso.2019.109017

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67054

Abstract

The HPHT diamond Schottky diode was assembled as a Metal/Intrinsic/p-doped structure betavoltaic cell (BC) with a very thin (1 μm) drift layer and tested under 5–30 keV electron beam irradiation using a scanning electron microscope (SEM). The effect of the β-radiation energy and the backscattering of electrons on the energy conversion was studied. From the results obtained, it is shown that, the efficiency of the investigated BC increases from 1.01 to 3.75% with the decrease of β-particle energy from 30 to 5 keV due to an increase of the electron beam absorption in a thin drift layer. Maximum efficiency is achieved when the electron beam energy is close to the average β-decay energy of 3H. The BC maximum output power of the 1.6 μW was obtained at an electron beam energy of 15 keV, that matches the β-decay energy of 63Ni. The total BC conversion efficiency at 15 keV electron-beam energy is about 3%. The calculations indicated that a preferable β-source for the diamond based BCs with a thin (1 μm) drift layer is 63Ni.

Keywords: batteries; beta radiation; diodes; diamond

Free keywords: betavoltaic; diamond; energy conversion efficiency; thin drift layer; Schottky diode

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1