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학술대회 Ni-63 Radioisotope Betavoltaic Cells Based on Vertical Electrodes and pn Junctions
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저자
최병건, 강성원, 박경환, 구진근, 박건식, 손광재, 정동혁, 강상구, 윤영목
발행일
201507
출처
International Conference on Nanotechnology (IEEE-NANO) 2015, pp.889-892
DOI
https://dx.doi.org/10.1109/NANO.2015.7388757
협약과제
15IS1100, SOT기반 모션제어 컨트롤 플랫폼용 interactive 스마트웨어 기술 개발, 강성원
초록
3D Silicon pn junction betavoltaic cells are designed and fabricated with vertical electrode structure in this work. The betavoltaic cells consist of multiple vertical pn junctions generated by the vertical p-electrodes. The beta-particles from beta-emitting radioisotope Ni-63 are directly incident to the space charge region of vertically generated pn junctions without passing the neutral n or p region. The energy conversion from nuclear energy to electric energy occurs at the vertically generated space charge region. The electrical characteristics of betavoltaic cells having three different unit pn electrode spacing, i.e. 50, 110, and 190μm are demonstrated using electron beam irradiation in a scanning electron microscope (SEM). The Voc and Jsc as a function of pn spacing under 17keV and 30keV of acceleration voltage onto 1.2 × 1.2 mm2 of unit cell absorption area are presented in this paper.
키워드
betavoltaic, vertical pn junction
KSP 제안 키워드
2 mm, Acceleration voltage, Electric energy, Electrode spacing, Electrode structure, Energy Conversion, Nuclear energy, P-N junction, Vertical electrodes, electrical characteristics, electron beam irradiation