Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells

Geisz, John F. and Steiner, Myles A. and García Vara, Iván and Kurtz, Sarah R. and Friedman, Daniel J. (2013). Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells. "Applied Physics Letters", v. 103 (n. 4); pp.. ISSN 0003-6951. https://doi.org/10.1063/1.4816837.

Description

Title: Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells
Author/s:
  • Geisz, John F.
  • Steiner, Myles A.
  • García Vara, Iván
  • Kurtz, Sarah R.
  • Friedman, Daniel J.
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: July 2013
ISSN: 0003-6951
Volume: 103
Subjects:
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We demonstrate 1.81 eV GaInP solar cells approaching the Shockley-Queisser limit with 20.8% solar conversion efficiency, 8% external radiative efficiency, and 80–90% internal radiative efficiency at one-sun AM1.5 global conditions. Optically enhanced voltage through photon recycling that improves light extraction was achieved using a back metal reflector. This optical enhancement was realized at one-sun currents when the non-radiative Sah-Noyce-Shockley junction recombination current was reduced by placing the junction at the back of the cell in a higher band gap AlGaInP layer. Electroluminescence and dark current-voltage measurements show the separate effects of optical management and non-radiative dark current reduction.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7299878METACELLSUnspecifiedAdvanced epitaxy of metamorphic semiconductor structures for multijunction solar cells

More information

Item ID: 26228
DC Identifier: http://oa.upm.es/26228/
OAI Identifier: oai:oa.upm.es:26228
DOI: 10.1063/1.4816837
Official URL: http://scitation.aip.org/content/aip/journal/apl/103/4/10.1063/1.4816837?ver=pdfcov
Deposited by: Memoria Investigacion
Deposited on: 08 Jun 2014 10:50
Last Modified: 07 Nov 2014 10:58
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