Light-trapping in photon enhanced thermionic emitters

Buencuerpo, J. and Llorens, J.M. and Zilio, Pierfrancesco and Raja, Waseem and Cunha, Joao and Alabastri, Alessandro and Zaccaria, Remo Proietti and Martí Vega, Antonio and Versloot, T. (2015). Light-trapping in photon enhanced thermionic emitters. "Optics Express", v. 23 (n. 19); pp. 1220-1235. ISSN 1094-4087.


Title: Light-trapping in photon enhanced thermionic emitters
  • Buencuerpo, J.
  • Llorens, J.M.
  • Zilio, Pierfrancesco
  • Raja, Waseem
  • Cunha, Joao
  • Alabastri, Alessandro
  • Zaccaria, Remo Proietti
  • Martí Vega, Antonio
  • Versloot, T.
Item Type: Article
Título de Revista/Publicación: Optics Express
Date: 27 August 2015
ISSN: 1094-4087
Volume: 23
Freetext Keywords: light, photon, electronic, emitters
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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A 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.

Funding Projects

Madrid Regional GovernmentS2013/MAE-2780UnspecifiedUnspecifiedMateriales, dispositivos y tecnología para el desarrollo de la Industria fotovoltaica.
Government of SpainENE2012-37804-C02-02UnspecifiedUnspecifiedAplicación de estructuras cuánticas y otros nuevos conceptos a la mejora de la eficiencia de las células solares, subproyecto 2.
Government of SpainAIC-C-2011-0806UnspecifiedUnspecifiedColaboración IMM-CSIC con INL en desarrollo de instrumentación para procesos de recubrimientos especiales en sensores.

More information

Item ID: 41033
DC Identifier:
OAI Identifier:
DOI: 10.1364/OE.23.0A1220
Official URL:
Deposited by: Memoria Investigacion
Deposited on: 05 Feb 2018 09:41
Last Modified: 05 Feb 2018 09:41
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