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通过自组装单层增强石墨烯设备的热管理

Zexin Liu¹, Fanfan Wang², Xiaofeng Wang³

¹Wuhan National High Magnetic Field Center and School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

ACS applied materials & interfaces

|November 18, 2024

概括

自组装单层 (SAM) 改善了石墨烯电子中的散热. 这些SAM增强了导热性,减少了自我加热问题,提高了设备性能和功率密度.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
固态物理固态物理

背景情况:

石墨烯的优越性能使其成为一种替代品,但基板相互作用会降低其导热性.
较弱的范德瓦尔斯力会导致高的界面热阻,导致自热和降低设备性能.
有效的散热对于先进的二维 (2D) 电子设备至关重要.

研究的目的:

通过修改石墨烯-基板接口来减轻石墨烯的热降解.
调查自组装单层 (SAM) 在增强热管理中的作用.
通过解决自我加热,提高石墨烯场效应晶体管 (GFET) 的性能.

主要方法:

使用具有-NH2和-CH3终端的自组装单层 (SAM) 来修改石墨烯氧化物基板接口.
研究了SAMs对界面合强度和基板声散射的影响.
制造并表征了具有SAM修改接口的石墨烯场效应晶体管 (GFET).

主要成果:

-NH2终结的SAMS增强了接口合和热导电.
-CH3终结的SAMS抑制了基质的声子散射,保持了石墨烯在平面内的导热性.
带有 -NH2 SAMs 的设备显示电流承载能力增加了 28.1%,最大功率密度增加了 48.2%,自我加热减轻.

结论:

SAMs为改善二维电子设备的热管理提供了一个可行的策略.
与SAM的接口工程可以显著提高散热和设备性能.
这种方法为克服下一代电子产品的热挑战提供了一个有希望的平台.

关键词:

电子设备电子设备电子设备场效应晶体管的领域效应晶体管.石墨烯是一种石墨烯.自己组装的单层单层.热电阻热电阻热电阻

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