Voltage recovery in intermediate band solar cells

García-Linares Fontes, Pablo and Martí Vega, Antonio and Antolín Fernández, Elisa and Farmer, C.D. and Ramiro Gonzalez, Iñigo and Stanley, Colin and Luque López, Antonio (2012). Voltage recovery in intermediate band solar cells. "Solar Energy Materials And Solar Cells", v. 98 ; pp. 240-244. ISSN 0927-0248.


Title: Voltage recovery in intermediate band solar cells
  • García-Linares Fontes, Pablo
  • Martí Vega, Antonio
  • Antolín Fernández, Elisa
  • Farmer, C.D.
  • Ramiro Gonzalez, Iñigo
  • Stanley, Colin
  • Luque López, Antonio
Item Type: Article
Título de Revista/Publicación: Solar Energy Materials And Solar Cells
Date: March 2012
Volume: 98
Freetext Keywords: Solar cell; Quantum dots; Intermediate band; Recombination; Concentrated light
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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The intermediate band solar cell (IBSC) is based on a novel photovoltaic concept and has a limiting efficiency of 63.2%, which compares favorably with the 40.7% efficiency of a conventional, single junction solar cell. It is characterized by a material hosting a collection of energy levels within its bandgap, allowing the cell to exploit photons with sub-bandgap energies in a two-step absorption process, thus improving the utilization of the solar spectrum. However, these intermediate levels are often regarded as an inherent source of supplementary recombination, although this harmful effect can in theory be counteracted by the use of concentrated light. We present here a novel, low-temperature characterization technique using concentrated light that reveals how the initially enhanced recombination in the IBSC is reduced so that its open-circuit voltage is completely recovered and reaches that of a conventional solar cell.

Funding Projects

FP7211640IBPOWERUnspecifiedIntermediate Band Materials and Solar Cells for Photovoltaics with High Efficiency and Reduced Cost

More information

Item ID: 16083
DC Identifier: http://oa.upm.es/16083/
OAI Identifier: oai:oa.upm.es:16083
Deposited by: Memoria Investigacion
Deposited on: 23 Jul 2013 18:43
Last Modified: 31 Oct 2014 12:13
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