We examine the transfer of graphene grown by chemical vapor deposition (CVD) with polymer scaffolds of poly(methyl methacrylate) (PMMA), poly(lactic acid) (PLA), poly(phthalaldehyde) (PPA), and poly(bisphenol A carbonate) (PC). We find that optimally reactive PC scaffolds provide the cleanest graphene transfers without any annealing, after extensive comparison with optical microscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and scanning tunneling microscopy. Comparatively, films transferred with PLA, PPA, and PMMA have a two-fold higher roughness and a five-fold higher chemical doping. Using PC scaffolds, we demonstrate the clean transfer of CVD multilayer graphene, fluorinated graphene, and hexagonal boron nitride. Our annealing free, PC transfers enable the use of atomically-clean nanomaterials in biomolecule encapsulation and flexible electronic applications.
@article{arxiv.1501.02884,
title = {Annealing Free, Clean Graphene Transfer using Alternative Polymer Scaffolds},
author = {Joshua D. Wood and Gregory P. Doidge and Enrique A. Carrion and Justin C. Koepke and Joshua A. Kaitz and Isha Datye and Ashkan Behnam and Jayan Hewaparakrama and Basil Aruin and Yaofeng Chen and Hefei Dong and Richard T. Haasch and Joseph W. Lyding and Eric Pop},
journal= {arXiv preprint arXiv:1501.02884},
year = {2015}
}
Comments
4 figures; 46 pages total, including the extended supplement