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Light-trapping in photon enhanced thermionic emitters

AuthorsBuencuerpo, Jerónimo CSIC ORCID; Llorens Montolio, José Manuel CSIC ORCID; Zilio, Pierfrancesco; Raja, Waseem; Cunha, Joao; Alabastri, Alessandro; Zaccaria, Remo Proietti; Martí Vega, Antonio; Versloot, Thijs
Issue Date2015
PublisherOptical Society of America
CitationOptics Express 23(19): A1220-A1235 (2015)
AbstractA series of photonic crystal structures are optimized for a photon enhanced thermionic emitter. With realistic parameter values to describe a p-type GaAs device we find an efficiency above 10%. The light-trapping structures increases the performance by 2% over an optimal bilayer anti-reflective coating. We find a device efficiency very close to the case of a Lambertian absorber, but below its maximum performance. To prevent an efficiency below 10% the vacuum gap must be dimensioned according to the concentration factor of the solar irradiance.
Publisher version (URL)http://dx.doi.org/10.1364/OE.23.0A1220
Identifiersissn: 1094-4087
Appears in Collections:(IMN-CNM) Artículos
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