Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Modeling and characterization of multiple level intermediate band solar cell
Year:2010
Research Areas
  • Physics - Semiconductors and band structure
Information
Abstract
Intermediate band solar cells (IBSCs) are a new kind of devices capable of surpassing the Shockley- Queisser efficiency limit for conventional solar cells. This novel technology requires the use of a new type of material named intermediate band (IB) material which makes a better use of the solar spectrum thanks to the existence of a collection of electronic levels within the bandgap of the semiconductor. Quantum Dots (QDs) remain as a feasible technology to implement IB materials. InAs/GaAs QD-IBSCs were manufactured in order to test the validity of the concept, although their real size and shape are far from the optimum. This causes extra electron levels to appear within the nanostructure confining potential, degrading the performance of the device. In this paper, the effect of these extra levels will be studied through a multiple level IBSC model based on the detailed balance, but modified so a term accounting for the non-radiative recombination (NRR) is also included. The model is completed with constant fitting parameters so the concentration JL-VOC curves (which do not incorporate series resistance effects) can be fitted. Several QD-IBSCs where manufactured, measured and fitted with this model, rendering relevant information about the recombination nature of the QD-IBSCs.
International
Si
Congress
25th European Photovoltaic Solar Energy Conference and Exhibition - 5th World Conference on Photovoltaic Energy Conversion
960
Place
Valencia (España)
Reviewers
Si
ISBN/ISSN
3-936338-26-4
Start Date
06/09/2010
End Date
10/09/2010
From page
468
To page
471
Proc. 25th EU PVSEC/5th WCPEC
Participants
  • Autor: Pablo Garcia-Linares Fontes (UPM)
  • Autor: Antonio Marti Vega (UPM)
  • Autor: Elisa Antolin Fernandez (UPM)
  • Autor: Estela Hernandez Martin (UPM)
  • Autor: Iñigo Ramiro Gonzalez (UPM)
  • Autor: Antonio Luque Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Silicio y Nuevos Conceptos para Células Solares
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)