Low-temperature solution processing of graphene-carbon nanotube hybrid materials for high-performance transparent conductors.
We report the formation of a nanocomposite comprised of chemically converted graphene and carbon nanotubes. Our solution-based method does not require surfactants, thus preserving the intrinsic electronic and mechanical properties of both components, delivering 240 ohms/square at 86% transmittance. This low-temperature process is completely compatible with flexible substrates and does not require a sophisticated transfer process. We believe that this technology is inexpensive, is massively scalable, and does not suffer from several shortcomings of indium tin oxide. A proof-of-concept application in a polymer solar cell with power conversion efficiency of 0.85% is demonstrated. Preliminary experiments in chemical doping are presented and show that optimization of this material is not limited to improvements in layer morphology.
Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California, 90095, USA.
Vincent C
VC
Tung
Li-Min
LM
Chen
Matthew J
MJ
Allen
Jonathan K
JK
Wassei
Kurt
K
Nelson
Richard B
RB
Kaner
Yang
Y
Yang