Wavelength-selective emitters with pyramid nanogratings enhanced by multiple resonance modes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F16%3A86098071" target="_blank" >RIV/61989100:27640/16:86098071 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0957-4484/27/15/155402" target="_blank" >http://dx.doi.org/10.1088/0957-4484/27/15/155402</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0957-4484/27/15/155402" target="_blank" >10.1088/0957-4484/27/15/155402</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wavelength-selective emitters with pyramid nanogratings enhanced by multiple resonance modes

Popis výsledku v původním jazyce

Binary gratings with high or low metal filling ratios in a grating region have been demonstrated as successful candidates in enhancing the emittance of emitters for thermophotovoltaics since they could support surface plasmons (SPs), the Rayleigh-Wood anomaly (RWA), or cavity resonance (CR) within their geometries. This work shows that combining a tungsten binary grating with a low and high filling ratio to form a pyramid grating can significantly increase the emittance, which is nearly perfect in the wavelength region from 0.6 to 1.72 mu m, while being 0.1 at wavelengths longer than 2.5 mu m. Moreover, the emittance spectrum of the hybrid tungsten grating is insensitive to the angle of incidence. The enhancement demonstrated by magnetic field and Poynting vector patterns is due to the interplay between SPs and RWA modes at short wavelengths, and CR at long wavelengths. Furthermore, a combined grating made of nickel is also proposed providing enhanced emittance in a wide angle of incidence.

Název v anglickém jazyce

Wavelength-selective emitters with pyramid nanogratings enhanced by multiple resonance modes

Popis výsledku anglicky

Binary gratings with high or low metal filling ratios in a grating region have been demonstrated as successful candidates in enhancing the emittance of emitters for thermophotovoltaics since they could support surface plasmons (SPs), the Rayleigh-Wood anomaly (RWA), or cavity resonance (CR) within their geometries. This work shows that combining a tungsten binary grating with a low and high filling ratio to form a pyramid grating can significantly increase the emittance, which is nearly perfect in the wavelength region from 0.6 to 1.72 mu m, while being 0.1 at wavelengths longer than 2.5 mu m. Moreover, the emittance spectrum of the hybrid tungsten grating is insensitive to the angle of incidence. The enhancement demonstrated by magnetic field and Poynting vector patterns is due to the interplay between SPs and RWA modes at short wavelengths, and CR at long wavelengths. Furthermore, a combined grating made of nickel is also proposed providing enhanced emittance in a wide angle of incidence.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nanotechnology

ISSN

0957-4484

e-ISSN

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Svazek periodika

27

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000371343500010

EID výsledku v databázi Scopus

2-s2.0-84964478156