Combined photo- and electroreflectance of multijunction solar cells enabled by subcell electric coupling

Fuertes Marrón, David and Barrigón Montañés, Enrique and Ochoa Gómez, Mario and Artacho Huertas, Irene (2019). Combined photo- and electroreflectance of multijunction solar cells enabled by subcell electric coupling. "Applied Physics Letters", v. 114 (n. 15); pp. 1-5. ISSN 0003-6951. https://doi.org/10.1063/1.5062602.

Description

Title: Combined photo- and electroreflectance of multijunction solar cells enabled by subcell electric coupling
Author/s:
  • Fuertes Marrón, David
  • Barrigón Montañés, Enrique
  • Ochoa Gómez, Mario
  • Artacho Huertas, Irene
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: 16 April 2019
ISSN: 0003-6951
Volume: 114
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Electric coupling between subcells of a monolithically grown multijunction solar cell in short circuit allows their simultaneous and independent characterization by means of photo- and electro-reflectance. The photovoltage generated by selective absorption of the pump beam in a given subcell during photoreflectance measurements results in reverse biasing the complementary subunits at the modulation frequency set on the pump illumination. Such voltage bias modulation then acts as external perturbation on the complementary subcells. The spectral separation of different subcell absorption ranges permits the probe beam to record in a single spectrum the response of the complete device as a combination of photo- and electro-reflectance, thereby providing access for the diagnosis of subcells on an individual basis. This form of modulation spectroscopy is demonstrated on a GaInP/GaAs tandem solar cell.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS2013-MAE-2780MADRID-PVUnspecifiedMateriales, dispositivos y tecnología para el desarrollo de la Industria fotovoltaica
Government of SpainTEC2015-64189-C3-1-RINVENTA-PVUnspecifiedUnspecified
Horizon 2020656208NEXTNANOCELLSLUNDS UNIVERSITETNext generation nanowire solar cells

More information

Item ID: 63887
DC Identifier: http://oa.upm.es/63887/
OAI Identifier: oai:oa.upm.es:63887
DOI: 10.1063/1.5062602
Official URL: https://aip.scitation.org/doi/full/10.1063/1.5062602
Deposited by: Memoria Investigacion
Deposited on: 02 Dec 2020 15:25
Last Modified: 02 Dec 2020 15:25
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