Abstract
Precise spatial control over the electrical properties of thin films is the key capability enabling the production of modern integrated circuitry. Although recent advances in chemical vapour deposition methods have enabled the large-scale production of both intrinsic and doped graphene1,2,3,4,5,6, as well as hexagonal boron nitride (h-BN)7,8,9,10, controlled fabrication of lateral heterostructures in these truly atomically thin systems has not been achieved. Graphene/h-BN interfaces are of particular interest, because it is known that areas of different atomic compositions may coexist within continuous atomically thin films5,10 and that, with proper control, the bandgap and magnetic properties can be precisely engineered11,12,13. However, previously reported approaches for controlling these interfaces have fundamental limitations and cannot be easily integrated with conventional lithography14,15,16. Here we report a versatile and scalable process, which we call ‘patterned regrowth’, that allows for the spatially controlled synthesis of lateral junctions between electrically conductive graphene and insulating h-BN, as well as between intrinsic and substitutionally doped graphene. We demonstrate that the resulting films form mechanically continuous sheets across these heterojunctions. Conductance measurements confirm laterally insulating behaviour for h-BN regions, while the electrical behaviour of both doped and undoped graphene sheets maintain excellent properties, with low sheet resistances and high carrier mobilities. Our results represent an important step towards developing atomically thin integrated circuitry and enable the fabrication of electrically isolated active and passive elements embedded in continuous, one-atom-thick sheets, which could be manipulated and stacked to form complex devices at the ultimate thickness limit.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Novoselov, K. S. et al. Electric field effect in atomically thin carbon films. Science 306, 666–669 (2004)
Novoselov, K. S. et al. Two-dimensional gas of massless Dirac fermions in graphene. Nature 438, 197–200 (2005)
Zhang, Y., Tan, Y.-W., Stormer, H. L. & Kim, P. Experimental observation of the quantum Hall effect and Berry’s phase in graphene. Nature 438, 201–204 (2005)
Li, X. et al. Large-area synthesis of high-quality and uniform graphene films on copper foils. Science 324, 1312–1314 (2009)
Zhao, L. et al. Visualizing individual nitrogen dopants in monolayer graphene. Science 333, 999–1003 (2011)
Jin, Z., Yao, J., Kittrell, C. & Tour, J. M. Large-scale growth and characterizations of nitrogen-doped monolayer graphene sheets. ACS Nano 5, 4112–4117 (2011)
Kubota, Y., Watanabe, K., Tsuda, O. & Taniguchi, T. Deep ultraviolet light-emitting hexagonal boron nitride synthesized at atmospheric pressure. Science 317, 932–934 (2007)
Kim, K. K. et al. Synthesis of monolayer hexagonal boron nitride on Cu foil using chemical vapor deposition. Nano Lett. 12, 161–166 (2012)
Song, L. et al. Large scale growth and characterization of atomic hexagonal boron nitride layers. Nano Lett. 10, 3209–3215 (2010)
Ci, L. et al. Atomic layers of hybridized boron nitride and graphene domains. Nature Mater. 9, 430–435 (2010)
Liu, Y., Bhowmick, S. & Yakobson, B. I. BN white graphene with “colorful” edges: the energies and morphology. Nano Lett. 11, 3113–3116 (2011)
Pruneda, J. M. Origin of half-semimetallicity induced at interfaces of C-BN heterostructures. Phys. Rev. B 81, 161409 (2010)
Miyamoto, Y., Rubio, A., Cohen, M. & Louie, S. Chiral tubules of hexagonal BC2N. Phys. Rev. B 50, 4976–4979 (1994)
Wehling, T. O. et al. Molecular doping of graphene. Nano Lett. 8, 173–177 (2008)
Williams, J. R., Dicarlo, L. & Marcus, C. M. Quantum Hall effect in a gate-controlled p-n junction of graphene. Science 317, 638–641 (2007)
Dresselhaus, M. S., Jorio, A., Hofmann, M., Dresselhaus, G. & Saito, R. Perspectives on carbon nanotubes and graphene Raman spectroscopy. Nano Lett. 10, 751–758 (2010)
Chen, S. et al. Oxidation resistance of graphene-coated Cu and Cu/Ni alloy. ACS Nano 5, 1321–1327 (2011)
Huang, P. Y. et al. Grains and grain boundaries in single-layer graphene atomic patchwork quilts. Nature 469, 389–392 (2011)
Kim, K. et al. Grain boundary mapping in polycrystalline graphene. ACS Nano 5, 2142–2146 (2011)
Tsen, A. W. et al. Tailoring electrical transport across grain boundaries in polycrystalline graphene. Science 336, 1143–1146 (2012)
Yu, Q. et al. Control and characterization of individual grains and grain boundaries in graphene grown by chemical vapour deposition. Nature Mater. 10, 443–449 (2011)
Sun, Z. et al. Growth of graphene from solid carbon sources. Nature 468, 549–552 (2010)
Kim, Y.-J., Lee, J.-H. & Yi, G.-C. Vertically aligned ZnO nanostructures grown on graphene layers. Appl. Phys. Lett. 95, 213101 (2009)
Dean, C. R. et al. Boron nitride substrates for high-quality graphene electronics. Nature Nanotechnol. 5, 722–726 (2010)
Britnell, L. et al. Electron tunneling through ultrathin boron nitride crystalline barriers. Nano Lett. 12, 1707–1710 (2012)
Lee, G.-H. et al. Electron tunneling through atomically flat and ultrathin hexagonal boron nitride. Appl. Phys. Lett. 99, 243114 (2011)
Sanchez-Yamagishi, J. et al. Quantum Hall effect, screening, and layer-polarized insulating states in twisted bilayer graphene. Phys. Rev. Lett. 108, 076601 (2012)
Meric, I. et al. Current saturation in zero-bandgap, top-gated graphene field-effect transistors. Nature Nanotechnol. 3, 654–659 (2008)
Moser, J., Barreiro, A. & Bachtold, A. Current-induced cleaning of graphene. Appl. Phys. Lett. 91, 163513 (2007)
Liang, X. et al. Toward clean and crackless transfer of graphene. ACS Nano 5, 9144–9153 (2011)
Radisavljevic, B., Radenovic, A., Brivio, J., Giacometti, V. & Kis, A. Single-layer MoS2 transistors. Nature Nanotechnol. 6, 147–150 (2011)
Acknowledgements
We thank P. McEuen and M. Spencer for discussions. This work was mainly supported by AFOSR grants (FA9550-09-1-0691 and FA9550-10-1-0410) and the NSF through the Cornell Centers for Materials Research (NSF DMR-1120296), which also provided the electron microscopy facilities. Additional funding was provided by the Alfred P. Sloan Foundation. L.B. was partially supported by a Fullbright scholarship; R.W.H. and P.Y.H. were supported by an NSF Graduate Research Fellowship. Device fabrication was performed at the Cornell NanoScale Facility, a member of the National Nanotechnology Infrastructure Network, which is supported by the National Science Foundation (grant ECS-0335765).
Author information
Authors and Affiliations
Contributions
M.P.L. and C.-J.K. contributed equally to this work. Synthesis, device fabrication, and electrical measurements and analysis were done by M.P.L. and C.-J.K. DF-TEM and data analysis were performed by L.B. and C.-J.K. EELS measurement and data analysis were conducted by P.Y.H. and D.A.M. Raman measurements and analysis were carried out by M.P.L. with assistance from R.W.H. J.P. designed the experiments and oversaw the research. M.P.L. and J.P. wrote the manuscript with assistance from R.W.H and input from all authors.
Corresponding author
Ethics declarations
Competing interests
An application has been filed for a provisional US patent titled “Patterned regrowth for atomically thin graphene and boron nitride lateral heterostructures.” based on this work.
Supplementary information
Supplementary Information
This file contains Supplementary Text, Supplementary Figures 1-9, Supplementary Table 1 and Supplementary References. (PDF 5604 kb)
Rights and permissions
About this article
Cite this article
Levendorf, M., Kim, CJ., Brown, L. et al. Graphene and boron nitride lateral heterostructures for atomically thin circuitry. Nature 488, 627–632 (2012). https://doi.org/10.1038/nature11408
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/nature11408