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논문 기본 정보

자료유형
학술저널
저자정보
Ban, Chae-Min (Neutron Utilization Research Division, Korea Atomic Energy Research Institute) Lee, Chul-Yong (Neutron Utilization Research Division, Korea Atomic Energy Research Institute) Jun, Byung-Hyuk (Neutron Utilization Research Division, Korea Atomic Energy Research Institute)
저널정보
대한방사선방어학회 방사선방어학회지 방사선방어학회지 제43권 제4호
발행연도
2018.1
수록면
131 - 136 (6page)

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Background: We investigated the current characteristics of a thin-film Ag electrode on a chemical vapor deposition (CVD) diamond. The CVD diamond is widely recognized as a radiation detection material because of its high tolerance against high radiation, stable response to various dose rates, and good sensitivity. Additionally, thin-film Ag has been widely used as an electrode with high electrical conductivity. Materials and Methods: Considering these properties, the thin-film Ag electrode was deposited onto CVD diamonds with varied deposition thicknesses (${\fallingdotseq}50/98/152/257nm$); subsequently, the surface thickness, surface roughness, leakage current, and photo-current were characterized. Results and Discussion: The leakage current was found to be very low, and the photo-current output signal was observed as stable for a deposited film thickness of 98 nm; at this thickness, a uniform and constant surface roughness of the deposited thin-film Ag electrode were obtained. Conclusion: We found that a CVD diamond radiation detector with a thin-film Ag electrode deposition thickness close to 100 nm exhibited minimal leakage current and yielded a highly stable output signal.

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