Al0.52In0.48P 55Fe x-ray-photovoltaic battery

Butera, S, Lioliou, G, Krysa, A B and Barnett, A M (2016) Al0.52In0.48P 55Fe x-ray-photovoltaic battery. Journal of Physics D: Applied Physics, 49 (35). p. 355601. ISSN 0022-3727

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An Al0.52In0.48P 55Fe radioisotope microbattery is demonstrated over the temperature range −20 °C to 160 °C. Al0.52In0.48P p+-i-n+ mesa structures were used to collect the photons from a 238 MBq 55Fe radioisotope x-ray source. The effects of temperature on the key microbattery parameters were studied. Increasing the temperature, the saturation current increased; whilst the open circuit voltage, the maximum power and the conversion efficiency decreased. An open circuit voltage of 0.97V and a conversion efficiency of 22% were measured in a single p+-i-n+ mesa structure at −20 °C. The highest total microbattery maximum output power using two mesa structures was 1.2 pW at −20 °C.

Item Type: Article
Keywords: AlInP, X-Ray, Photovoltaic, Semiconductor
Schools and Departments: School of Engineering and Informatics > Informatics
Subjects: Q Science > QC Physics
Depositing User: Silvia Butera
Date Deposited: 02 Aug 2016 11:59
Last Modified: 07 Feb 2018 12:38

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