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학술지 Evaluation of a Betavoltaic Energy Converter Supporting Scalable Modular Structure
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저자
강태욱, 김진주, 박성모, 손광재, 박경환, 이재진, 강성원, 최병건
발행일
201904
출처
ETRI Journal, v.41 no.2, pp.254-261
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2018-0022
협약과제
16PB7600, 외부충전없이 반영구적으로 사용이 가능한 10mWh/cm2급 동위원소기반 전고상(全固相) 하이브리드 전지 원천, 최병건
초록
Distinct from conventional energy-harvesting (EH) technologies, such as the use of photovoltaic, piezoelectric, and thermoelectric effects, betavoltaic energy conversion can consistently generate uniform electric power, independent of environmental variations, and provide a constant output of high DC voltage, even under conditions of ultra-low-power EH. It can also dramatically reduce the energy loss incurred in the processes of voltage boosting and regulation. This study realized betavoltaic cells comprised of p-i-n junctions based on silicon carbide, fabricated through a customized semiconductor recipe, and a Ni foil plated with a Ni-63 radioisotope. The betavoltaic energy converter (BEC) includes an array of 16 parallel-connected betavoltaic cells. Experimental results demonstrate that the series and parallel connections of two BECs result in an open-circuit voltage V oc of 3.06 V with a short-circuit current I sc of 48.5혻nA, and a V oc of 1.50혻V with an I sc of 92.6혻nA, respectively. The capacitor charging efficiency in terms of the current generated from the two series-connected BECs was measured to be approximately 90.7%.
KSP 제안 키워드
Capacitor charging, Charging efficiency, Conventional energy, DC voltage, Electric power, Energy Conversion, Energy Harvesting(EH), Ni foil, Open circuit voltage(VOC), P-i-n, Parallel connected
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