Investigation of nanoscale heat transport in sub-10 nm carbon nanotube field-effect transistors based on the finite element method. (1st October 2021)

• Record Type: Journal Article
• Authors: Rezgui, Houssem; Nasri, Faouzi; Ben Aissa, Mohamed Fadhel; Guizani, Amen Allah
• Is Part Of: Thermal science and engineering progress. Volume 25(2021)
• Publication Date: 2021-10-01
• Subjects: Nanoscale thermal transport -- CNTs field-effect transistors -- Phonon hydrodynamic model -- Thermal mapping -- Finite-element method; Heat engineering -- Periodicals; Heat engineering; Thermodynamics; Periodicals; 621.402
• DOI: 10.1016/j.tsep.2021.100938
• Languages: English
• ISSNs: 2451-9049

Abstract

Highlights: Thermal mapping technique is a promising for the analysis of nanoscale heat transport. Accurate phonon hydrodynamic equation is used to investigate the nanoscale thermal management in sub 10-nm CNTFETs. Enhancing the thermal conductivity of CNTs is a feasible way to improve the heat dissipation ability of nanodevices. Lower thermal boundary resistance can optimize the thermal stability of carbon nanotube field-effect transistors. Abstract: During the past few years, computational approaches and engineering thermal optimizations have been investigated due to its essential role in heat conduction problems related to the next-generation transistors. This paper probes the significance of thermal management applications in carbon nanotube field-effect transistors (CNTFETs). In this work, we refer to the phonon hydrodynamic model for thermal modeling of sub- 10 n m CNTFETs. Here, we report the nanoscale heat transport within CNTFETs based on the finite-element method (FEM). The excellent agreement between the phonon Boltzmann transport equation (BTE) and our model prediction provides the validity of the present methodology. Our computation techniques suggest that limiting the heat propagation can be ensured by increasing specular phonon reflection inside the channel region. In addition, enhancing the thermal conductivity of CNTs with a small thermal boundary resistance is a feasible way to improve the heat dissipation ability.