Theory and modeling of electro-thermal transport in nanoscale materials and devices

纳米材料和器件中电热传输的理论和建模

• 批准号: RGPIN-2016-04881
• 负责人: Maassen, Jesse
• 金额: $ 1.97万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633531
• 关键词: Theory; modeling; electro; thermal; transport

Semiconductor electronics has shaped our world. The downscaling of device dimensions that made this possible not only presented enormous technological challenges, it also raised many fundamental questions. Over time a deep understanding of electron transport at the nanoscale has been developed, along with the computational tools to accurately capture the relevant physics. Electron transport cannot, in principle, be separated from phonon (thermal) transport. The physics of coupled electron-phonon transport is responsible for self-heating in nanoscale devices, which critically limits their performance and reliability, and for providing a route for enhanced thermoelectric energy conversion in nanostructures. These and other challenges have far-reaching implications for energy and 21st century electronics. Further progress will require a deeper understanding of thermal transport at the nanoscale, along with the development of new computational tools that treat electrons and phonons on equal footing, address challenges from the nano- to macro-scale, and that are tightly connected to predictive first principles materials modeling.

半导体电子塑造了我们的世界。使这成为可能的器件尺寸的缩小不仅带来了巨大的技术挑战，还提出了许多基本问题。随着时间的推移，人们对纳米尺度下的电子输运有了深刻的理解，沿着发展了计算工具，以准确地捕捉相关的物理现象。原则上，电子输运不能与声子（热）输运分开。耦合电子-声子传输的物理学是负责纳米器件中的自加热，这严重限制了它们的性能和可靠性，并为增强纳米结构中的热电能量转换提供了一条途径。这些和其他挑战对能源和21世纪世纪电子产品具有深远的影响。进一步的进展将需要更深入地了解纳米尺度下的热传输，沿着开发新的计算工具，平等对待电子和声子，解决从纳米到宏观尺度的挑战，并与预测性第一原理材料建模密切相关。