Thermal radiation control from hot graphene electrons coupled to a photonic crystal nanocavity
Name
s41467-018-08047-3.pdf
Description
Published version
Size
710.77 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Shiue, Ren-Jye
Gao, Yuanda
Tan, Cheng
Peng, Cheng
Zheng, Jiabao
Efetov, Dmitri K.
Kim, Young Duck
Hone, James
Englund, Dirk R
Date Issued
January 2019
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Shiue, Ren-Jye et al. "Thermal radiation control from hot graphene electrons coupled to a photonic crystal nanocavity.". Nature Communications 10 (January 2019): 109. © 2019, The Author(s).
Version
Final published version
Abstract
Controlling thermal radiation is central in a range of applications including sensing, energy harvesting, and lighting. The thermal emission spectrum can be strongly modified through the electromagnetic local density of states (EM LDOS) in nanoscale-patterned metals and semiconductors. However, these materials become unstable at high temperature, preventing improvements in radiative efficiency and applications such as thermophotovoltaics. Here, we report stable high-temperature thermal emission based on hot electrons (>2000 K) in graphene coupled to a photonic crystal nanocavity, which strongly modifies the EM LDOS. The electron bath in graphene is highly decoupled from lattice phonons, allowing a comparatively cool temperature (700 K) of the photonic crystal nanocavity. This thermal decoupling of hot electrons from the LDOS-engineered substrate opens a broad design space for thermal emission control that would be challenging or impossible with heated nanoscale-patterned metals or semiconductor materials. Keywords: Nanophotonics and plasmonics; Optical properties and devices; Photonic crystals
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-018-08047-3
