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Journal Article
Evaluation of a Betavoltaic Energy Converter Supporting Scalable Modular Structure
- Authors
- Taewook Kang, Jinjoo Kim, Seongmo Park, Kwangjae Son, Kyunghwan Park, Jaejin Lee, Sungweon Kang, Byoung-Gun Choi
- Issue Date
- 2019-04
- Citation
- ETRI Journal, v.41, no.2, pp.254-261
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- 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
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
