Superior Thermal Dissipation in Graphene Electronic Device Through Novel Heat Path by Electron-Phonon Coupling

Ying Zhang1,#

Yaping Yan1,#

Jie Guo1

Tingyu Lu1,2 

Jun Liu2

Jun Zhou1

Xiangfan Xu1,3,Email

Center for Phononics and Thermal Energy Science, China-EU Joint Center for Nanophononics, School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina, 27695, USA

Zhejiang Province Key Laboratory of Quantum Technology and Device, Zhejiang University, Hangzhou, 310027, China

These authors contributed equally to this work.

Abstract

Interfacial thermal resistance (ITR) plays an important role in thermal dissipation across different materials and it has been widely investigated in recent years. In this work, we measured the relative change of the ITR between metal and aluminum oxide treated with O2-plasma. Significant reduction of ITR is observed. The measured data shows that plasma treatment induces an order of magnitude decrease of ITR, which is mainly attributed to the direct electronphonon coupling across the interface. Scanning thermal microscopy technique measurement of graphene electronic devices on aluminum oxide gave direct evidence for heat dissipation applications by tuning the surface charge carries concentration.