@article{18639078095b42b0a0dd94e79dec4a86,
title = "Bright visible light emission from graphene",
abstract = "Graphene and related two-dimensional materials are promising candidates for atomically thin, flexible and transparent optoelectronics. In particular, the strong light-matter interaction in graphene has allowed for the development of state-of-the-art photodetectors, optical modulators and plasmonic devices. In addition, electrically biased graphene on SiO 2 substrates can be used as a low-efficiency emitter in the mid-infrared range. However, emission in the visible range has remained elusive. Here, we report the observation of bright visible light emission from electrically biased suspended graphene devices. In these devices, heat transport is greatly reduced. Hot electrons (2,800K) therefore become spatially localized at the centre of the graphene layer, resulting in a 1,000-fold enhancement in thermal radiation efficiency. Moreover, strong optical interference between the suspended graphene and substrate can be used to tune the emission spectrum. We also demonstrate the scalability of this technique by realizing arrays of chemical-vapour-deposited graphene light emitters. These results pave the way towards the realization of commercially viable large-scale, atomically thin, flexible and transparent light emitters and displays with low operation voltage and graphene-based on-chip ultrafast optical communications.",
author = "Kim, {Young Duck} and Hakseong Kim and Yujin Cho and Ryoo, {Ji Hoon} and Park, {Cheol Hwan} and Pilkwang Kim and Kim, {Yong Seung} and Sunwoo Lee and Yilei Li and Park, {Seung Nam} and {Shim Yoo}, Yong and Duhee Yoon and Dorgan, {Vincent E.} and Eric Pop and Heinz, {Tony F.} and James Hone and Chun, {Seung Hyun} and Hyeonsik Cheong and Lee, {Sang Wook} and Bae, {Myung Ho} and Park, {Yun Daniel}",
note = "Funding Information: The authors thank P. Kim, D-H. Chae, J-M. Ryu and A.M. van der Zande for discussions. This work was supported by the Korea Research Institute of Standards and Science under the auspices of the project {\textquoteleft}Convergent Science and Technology for Measurements at the Nanoscale{\textquoteright} (15011053), grants from the National Research Foundation of Korea (2014-023563, NRF-2008-0061906, NRF-2013R1A1A1076141, NRF-2012M3C1A1048861, 2011-0017605, BSR-2012R1A2A2A01045496 and NMTD-2012M3A7B4049888) funded by the Korea government (MSIP), a grant (2011-0031630) from the Center for Advanced Soft Electronics through the Global Frontier Research Program of MSIP, the Priority Research Center Program (2012-0005859), a grant (2011-0030786) from the Center for Topological Matters at POSTECH, the NSF (DMR-1122594), AFOSR (FA95550-09-0705), ONR (N00014-13-1-0662 and N00014-13-1-0464), Army Research Office (ARO) grant W911NF-13-1-0471 and the Qualcomm Innovation Fellowship (QInF) 2013. Computational resources were provided by the Aspiring Researcher Program through Seoul National University. Publisher Copyright: {\textcopyright} 2015 Macmillan Publishers Limited.",
year = "2015",
month = aug,
day = "6",
doi = "10.1038/nnano.2015.118",
language = "English",
volume = "10",
pages = "676--681",
journal = "Nature Nanotechnology",
issn = "1748-3387",
publisher = "Nature Publishing Group",
number = "8",
}