Manipulate Interface Thermal Conductance of Metal-Graphene-Substrate Using Graphene Thermal Stability
首发时间:2013-01-10
Abstract:Graphene defects have played an important role in graphene's electrical, optical and thermal properties. In this work, we measured the interface thermal conductance of Al/graphene with different defect situations/silica using transient thermoreflectance technique. We use the graphene thermal stability of being annealed in different temperatures to manipulate the graphene defects. The transient thermoreflectance technique measurement results suggest that as graphene defects increase, the interface thermal conductance increases as well. The cause of the interface thermal conductance increase might be the graphene disintegration which starts from graphene imperfection rings and the oxygen doping which will enhance the metal-graphene bonding energy.
keywords: thermal stability graphene interface thermal conductance transient thermoreflectance technique
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石墨烯热稳定性对金属/石墨烯/基底界面热导的影响
摘要:石墨烯中的缺陷对石墨烯的电子、光学和热学特性有重要影响。本文采用瞬态热反射技术对Al、不同缺陷条件石墨烯和二氧化硅之间的界面热导进行了测量。利用石墨烯在不同温度退火后的结构不同,可以控制石墨烯的缺陷。测试结果表面,随着石墨烯缺陷的增加,界面热导增大。这可能是由于石墨烯内缺陷环的增加,导致石墨烯的完整性被打破,以及氧掺杂增加了金属和石墨烯之间的结合能,进而增大了界面热导。
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