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

• Published in: Scientific reports 2018-07, Vol.8 (1), p.10842-10, Article 10842
• Main Authors: Pandhi, Twinkle, Kreit, Eric, Aga, Roberto, Fujimoto, Kiyo, Sharbati, Mohammad Taghi, Khademi, Samane, Chang, A. Nicole, Xiong, Feng, Koehne, Jessica, Heckman, Emily M., Estrada, David
• Format: Article
• Language: English
• Subjects: 140/133; 639/301/357/918; 639/925/918/1052; Aerosols; Aluminum oxide; Graphene; Humanities and Social Sciences; Interfaces; multidisciplinary; Science; Science (multidisciplinary); Transmission lines
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-018-29195-y

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 ( Δ T = P × R TH ) 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 .