Cho, Hyunjin Rho, Hokyun Kim, Jun Hee Chae, Su-Hyeong Thang Viet Pham Seo, Tae Hoon Kim, Hak Yong Ha, Jun-Seok Kim, Hwan Chul Lee, Sang Hyun Kim, Myung Jong 2024-01-20T00:02:59Z 2024-01-20T00:02:59Z 2022-01-10 2017-11-22 1944-8244 https://pubs.kist.re.kr/handle/201004/122046 The heat generated from electronic devices such as light emitting diodes (LEDs), batteries, and highly integrated transistors is one of the major causes obstructing the improvement of their performance and reliability. Herein, we report a comprehensive method to dissipate the generated heat to a vast area by using the new type of graphene carbon metal composite film as a heat sink. The unique porous graphene-carbon-metal composite film that consists of an electrospun carbon nanofiber with arc-graphene (Arc-G) fillers and an electrochemically deposited copper (Cu) layer showed not only high electrical and thermal conductivity but also high mechanical stability. Accordingly, superior thermal management of LED devices to that of conventional Cu plates and excellent resistance stability during the repeated 10 000 bending cycles has been achieved. The heat dissipation of LEDs has been enhanced by the high heat conduction in the composite film, heat convection in the air flow, and thermal radiation at low temperature in the porous carbon structure. This result reveals that the graphene carbon metal composite film is one of the most promising materials for modern electronics. English American Chemical Society THERMAL-CONDUCTIVITY ELECTRICAL-CONDUCTIVITY MECHANICAL-PROPERTIES POLYMER COMPOSITES RAMAN-SPECTROSCOPY MATRIX COMPOSITES MANAGEMENT NANOFIBERS GRAPHITE OXIDE Graphene-Carbon-Metal Composite Film for a Flexible Heat Sink Article 10.1021/acsami.7b11485 1 ACS Applied Materials & Interfaces, v.9, no.46, pp.40801 - 40809 ACS Applied Materials & Interfaces 9 46 40801 40809 scie scopus 000416614600103 2-s2.0-85035050769 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article THERMAL-CONDUCTIVITY ELECTRICAL-CONDUCTIVITY MECHANICAL-PROPERTIES POLYMER COMPOSITES RAMAN-SPECTROSCOPY MATRIX COMPOSITES MANAGEMENT NANOFIBERS GRAPHITE OXIDE heat sink graphene electrospinning electroplating composite