首页|Effect of surface modification on the radiation stability of diamond ohmic contacts
Effect of surface modification on the radiation stability of diamond ohmic contacts
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The ohmic contact interface between diamond and metal is essential for the application of diamond detectors.Sur-face modification can significantly affect the contact performance and eliminate the interface polarization effect.However,the radiation stability of a diamond detector is also sensitive to surface modification.In this work,the influence of sur-face modification technology on a diamond ohmic contact under high-energy radiation was investigated.Before radiation,the specific contact resistivities(ρc)between Ti/Pt/Au-hydrogen-terminated diamond(H-diamond)and Ti/Pt/Au-oxygen-terminated diamond(O-diamond)were 2.0 × 10-4 Ω·cm2 and 4.3 × 10-3 Ω·cm2,respectively.After 10 MeV electron radiation,the ρc of Ti/Pt/Au H-diamond and Ti/Pt/Au O-diamond were 5.3 × 10-3 Ω·cm2 and 9.1 × 10-3 Ω·cm2,respec-tively.The rates of change of ρc of H-diamond and O-diamond after radiation were 2550％and 112％,respectively.The electron radiation promotes bond reconstruction of the diamond surface,resulting in an increase in ρc.
single crystal diamondohmic contactsurface modificationelectron radiation
牟恋希、赵上熳、王鹏、原晓芦、刘金龙、朱志甫、陈良贤、魏俊俊、欧阳晓平、李成明
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Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China
School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China
School of Information Engineering,Zhengzhou University of Technology,Zhengzhou 450044,China
State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,China
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National Key Research and Development Program of China
NETL
NSTL
万方数据
维普
