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Gallium arsenide 55Fe X-ray-photovoltaic battery
journal contribution
posted on 2023-06-09, 00:18 authored by Silvia Butera, Grammatiki LioliouGrammatiki Lioliou, Anna BarnettAnna BarnettThe effects of temperature on the key parameters of a prototype GaAs 55Fe radioisotope X-ray microbattery were studied over the temperature range -20 °C to 70 °C. A p-i-n GaAs structure was used to collect the photons from a 254 Bq 55Fe radioisotope X-ray source. Experimental results showed that the open circuit voltage and the short circuit current decreased with increased temperature. The maximum output power and the conversion efficiency of the device decreased at higher temperatures. For the reported microbattery, the highest maximum output power (1 pW, corresponding to 0.4 µW/Ci) was observed at -20 °C. A conversion efficiency of 9% was measured at -20 °C.
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Publication status
- Published
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- Published version
Journal
Journal of Applied PhysicsISSN
0021-8979Publisher
American Institute of PhysicsExternal DOI
Issue
6Volume
119Article number
a064504Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-02-15First Open Access (FOA) Date
2016-02-15First Compliant Deposit (FCD) Date
2016-02-15Usage metrics
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