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Title: Thermal radiation control from hot graphene electrons coupled to a photonic crystal nanocavity

Journal Article · · Nature Communications
 [1];  [2];  [2];  [1];  [3];  [4]; ORCiD logo [5];  [2]; ORCiD logo [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Columbia Univ., New York, NY (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Columbia Univ., New York, NY (United States)
  4. Barcelona Institute of Science and Technology (BIST), Tarragona (Spain)
  5. Columbia Univ., New York, NY (United States); Kyung Hee Univ., Seoul (Korea)

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.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Excitonics (CE); Brookhaven National Laboratory (BNL), Upton, NY (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; SC0001088
OSTI ID:
1566608
Journal Information:
Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Cited By (9)

Graphene‐Based Devices for Thermal Energy Conversion and Utilization journal August 2019
Functional Mid‐Infrared Polaritonics in van der Waals Crystals journal November 2019
Carbon Nanotubes in Biomedicine journal January 2020
Graphite oxide- and graphene oxide-supported catalysts for microwave-assisted glucose isomerisation in water journal January 2019
Energy dissipation in van der Waals 2D devices journal June 2019
Nonequilibrium hot-electron-induced wavelength-tunable incandescent-type light sources journal December 2019
The Advances in Biomedical Applications of Carbon Nanotubes journal May 2019
Large responsivity of graphene radiation detectors with thermoelectric readout text January 2019
Tunable broadband light emission from graphene preprint January 2020