Electrical Transport and Power Dissipation in Aerosol-Jet-Printed Graphene Interconnects

Abstract

Abstract This paper reports the first known investigation of power dissipation and electrical breakdown in aerosol-jet-printed (AJP) graphene interconnects. The electrical performance of aerosol-jet printed (AJP) graphene was characterized using the Transmission Line Method (TLM). The electrical resistance decreased with increasing printing pass number (n); the lowest sheet resistance measured was 1.5 kΩ/sq. for n = 50. The role of thermal resistance (R TH ) in power dissipation was studied using a combination of electrical breakdown thermometry and infrared (IR) imaging. A simple lumped thermal model ( $${\boldsymbol{\Delta }}{\bf{T}}={\bf{P}}{\boldsymbol{\times }}{{\bf{R}}}_{{\bf{TH}}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Δ</mml:mi> <mml:mi>T</mml:mi> <mml:mo>=</mml:mo> <mml:mi>P</mml:mi> <mml:mo>×</mml:mo> <mml:msub> <mml:mrow> <mml:mi>R</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>TH</mml:mi> </mml:mrow> </mml:msub> </mml:math> ) and COMSOL Multiphysics was used to extract the total R TH , including interfaces. The R TH of AJP graphene on Kapton is ~27 times greater than that of AJP graphene on Al 2 O 3 with a corresponding breakdown current density 10 times less on Kapton versus Al 2 O 3 .