Graphene quilts for thermal management of high-power GaN transistors.

Nature Communications
Zhong YanAlexander A Balandin

Abstract

Self-heating is a severe problem for high-power gallium nitride (GaN) electronic and optoelectronic devices. Various thermal management solutions, for example, flip-chip bonding or composite substrates, have been attempted. However, temperature rise due to dissipated heat still limits applications of the nitride-based technology. Here we show that thermal management of GaN transistors can be substantially improved via introduction of alternative heat-escaping channels implemented with few-layer graphene-an excellent heat conductor. The graphene-graphite quilts were formed on top of AlGaN/GaN transistors on SiC substrates. Using micro-Raman spectroscopy for in situ monitoring we demonstrated that temperature of the hotspots can be lowered by ∼20 °C in transistors operating at ∼13 W mm(-1), which corresponds to an order-of-magnitude increase in the device lifetime. The simulations indicate that graphene quilts perform even better in GaN devices on sapphire substrates. The proposed local heat spreading with materials that preserve their thermal properties at nanometre scale represents a transformative change in thermal management.

References

Feb 21, 2008·Nano Letters·Alexander A BalandinChun Ning Lau
Apr 8, 2009·Nature Nanotechnology·Alexander N Obraztsov
Apr 8, 2009·Nature Nanotechnology·Sungjin Park, Rodney S Ruoff
Aug 29, 2009·Nano Letters·Xuesong LiRodney S Ruoff
Oct 8, 2009·Nature Nanotechnology·Michael Segal
Aug 24, 2010·Nature Nanotechnology·C R DeanJ Hone
Oct 7, 2010·Nano Letters·Yee Kan KohEric Pop
Jul 23, 2011·Nature Materials·Alexander A Balandin
Jan 5, 2012·Nano Letters·Khan M F Shahil, Alexander A Balandin
Jan 11, 2012·Nature Materials·Shanshan ChenRodney S Ruoff

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Citations

Aug 4, 2015·Chemical Reviews·Nan Gao, Xiaosheng Fang
Jan 24, 2015·Nature Materials·Jungwan Cho, Kenneth E Goodson
Nov 11, 2014·Nature Materials·J SchleehA J Minnich
Aug 19, 2016·ACS Applied Materials & Interfaces·Elena MessinaPietro Giuseppe Gucciardi
Jul 25, 2015·Scientific Reports·M E YahiaW M Moslem
Feb 28, 2017·ACS Applied Materials & Interfaces·Cengiz YeginMustafa Akbulut
Mar 13, 2014·Small·Yong XuWenhui Duan
Mar 1, 2014·Nature Communications·Jae Hwan ChuSoon-Yong Kwon
Aug 17, 2018·Physical Chemistry Chemical Physics : PCCP·San-Dong GuoJiang-Tao Liu
Apr 30, 2016·Nature Communications·Haoxue HanSebastian Volz
Jan 11, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·San-Dong GuoJun Dong
Jan 31, 2013·Physical Chemistry Chemical Physics : PCCP·Tengfei Luo, Gang Chen
Jan 22, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A J Minnich
Mar 21, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Qian-Qian ZhangKe-Qiu Chen
May 6, 2020·Nanotechnology·Andrea FaziYifeng Fu
Jan 21, 2017·Reports on Progress in Physics·Denis L Nika, Alexander A Balandin
Jul 27, 2017·Scientific Reports·Tzu-Hsuan ChangJung Han
Apr 1, 2020·Optics Express·Amirkoushyar ZiabariAli Shakouri
Jan 24, 2015·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jin-Wu JiangHarold S Park
Jun 21, 2014·Nanoscale·Gabriele FisichellaFilippo Giannazzo
May 6, 2017·Physical Chemistry Chemical Physics : PCCP·Huimin WangMing Hu

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