Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same
Abstract
Metallic thermal emitters consisting of two layers of differently structured nickel gratings on a homogeneous nickel layer are fabricated by soft lithography and studied for polarized thermal radiation. A thermal emitter in combination with a sub-wavelength grating shows a high extinction ratio, with a maximum value close to 5, in a wide mid-infrared range from 3.2 to 7.8 .mu.m, as well as high emissivity up to 0.65 at a wavelength of 3.7 .mu.m. All measurements show good agreement with theoretical predictions. Numerical simulations reveal that a high electric field exists within the localized air space surrounded by the gratings and the intensified electric-field is only observed for the polarizations perpendicular to the top sub-wavelength grating. This result suggests how the emissivity of a metal can be selectively enhanced at a certain range of wavelengths for a given polarization.
- Inventors:
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1273409
- Patent Number(s):
- 9400219
- Application Number:
- 12/754,657
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
H - ELECTRICITY H02 - GENERATION H02S - GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- DOE Contract Number:
- AC02-06CH11358
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2010 Apr 06
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 14 SOLAR ENERGY; 36 MATERIALS SCIENCE
Citation Formats
Lee, Jae-Hwang, Ho, Kai-Ming, and Constant, Kristen P. Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same. United States: N. p., 2016.
Web.
Lee, Jae-Hwang, Ho, Kai-Ming, & Constant, Kristen P. Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same. United States.
Lee, Jae-Hwang, Ho, Kai-Ming, and Constant, Kristen P. Tue .
"Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same". United States. https://www.osti.gov/servlets/purl/1273409.
@article{osti_1273409,
title = {Metallic layer-by-layer photonic crystals for linearly-polarized thermal emission and thermophotovoltaic device including same},
author = {Lee, Jae-Hwang and Ho, Kai-Ming and Constant, Kristen P.},
abstractNote = {Metallic thermal emitters consisting of two layers of differently structured nickel gratings on a homogeneous nickel layer are fabricated by soft lithography and studied for polarized thermal radiation. A thermal emitter in combination with a sub-wavelength grating shows a high extinction ratio, with a maximum value close to 5, in a wide mid-infrared range from 3.2 to 7.8 .mu.m, as well as high emissivity up to 0.65 at a wavelength of 3.7 .mu.m. All measurements show good agreement with theoretical predictions. Numerical simulations reveal that a high electric field exists within the localized air space surrounded by the gratings and the intensified electric-field is only observed for the polarizations perpendicular to the top sub-wavelength grating. This result suggests how the emissivity of a metal can be selectively enhanced at a certain range of wavelengths for a given polarization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 26 00:00:00 EDT 2016},
month = {Tue Jul 26 00:00:00 EDT 2016}
}
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