超高效的热传输通过一个"2.5D"全碳 sp2 / sp3 混合接口
Lin Qiu1, Haimo Li1, Xiaolu Yuan2
1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Angewandte Chemie (International ed. in English)
|October 9, 2024
概括
研究人员使用等离子体辅助化学蒸汽沉积开发了一种全新的"2.5D"全碳接口. 这种先进的材料通过改善传热,显著提高了下一代集成电路的热接口材料 (TIM) 性能.
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:
- 对于下一代集成电路来说,耐高温和导热性至关重要.
- 基于石墨烯的热接口材料 (TIM) 当与芯片集成时,会出现差的接口导热,从而限制其有效性.
- 与金属/钻石接口相比,现有的全碳接口的接口导热率明显较低.
研究的目的:
- 设计和实现一种全新的"2.5D"全碳接口,具有丰富的共价键,以提高TIM性能.
- 为了克服基于石墨烯的TIM中低界面导热的限制.
- 为高性能全碳设备和电路制定战略.
主要方法:
- 使用等离子体辅助化学蒸汽沉积 (CVD) 来创建"2.5D"接口.
- 一种超快速火技术被整合到CVD过程中.
- 使用原子级模拟来确认传热机制和量化贡献.
主要成果:
- 一个"2.5D"全碳接口,具有sp2/sp3混合接口成功制造.
- 开发的接口实现了异常高的接口导热,达到110-117MWm-2K-1在12-25nm的石墨烯厚度.
- 这种性能比金属/钻石接触器高出30%以上,比现有的全碳接触器高出数量级.
- 原子模拟显示,共价C-C键对热传输有显著的贡献,在22%的杂交度下占整个界面传导的85%,占整个界面传导的85%.
结论:
- 该研究提出了一种有效的策略,用于设计和制造"2.5D"全碳接口.
- 开发的接口为显著改善电子设备的热管理提供了一条途径.
- 这项工作为高性能全碳设备和具有优越热性能的电路铺平了道路.
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