Gallium arsenide 55Fe X-ray-photovoltaic battery
Gallium arsenide 55Fe X-ray-photovoltaic battery
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DOI：
10.1063/1.4941535
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发表时间：
2016-02-14
影响因子：
3.2
通讯作者：
Barnett, A. M.
中科院分区：
文献类型：
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作者：
Butera, S.;Lioliou, G.;Barnett, A. M.
在-20~70℃温度范围内，研究了温度对原型GaAsFe-55放射性同位素X射线微电池关键参数的影响。采用p-i-n结构的GaAs源收集254Bq Fe-55放射性同位素X射线源的光子。实验结果表明，开路电压和短路电流随温度升高而减小。温度越高，器件的最大输出功率和转换效率越低。对于报告的微电池，在-20℃下观察到最大输出功率(1pW，对应于0.4微米W/Ci)，在-20℃下测量到9%的转换效率。
The effects of temperature on the key parameters of a prototype GaAs Fe-55 radioisotope X-ray microbattery were studied over the temperature range of -20 degrees C to 70 degrees C. A p-i-n GaAs structure was used to collect the photons from a 254 Bq Fe-55 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 (1pW, corresponding to 0.4 mu W/Ci) was observed at -20 degrees C. A conversion efficiency of 9% was measured at -20 degrees C. (C) 2016 AIP Publishing LLC.