Extended description of tunnel junctions for distributed modeling of concentrator multi-junction solar cells

Espinet González, Pilar and García Vara, Iván and Rey-Stolle Prado, Ignacio and Algora del Valle, Carlos and Baudrit, Mathieu (2011). Extended description of tunnel junctions for distributed modeling of concentrator multi-junction solar cells. "Solar Energy Materials and Solar Cells", v. 95 (n. 9); pp. 2693-2697. ISSN 0927-0248. https://doi.org/10.1016/j.solmat.2011.05.009.

Description

Title: Extended description of tunnel junctions for distributed modeling of concentrator multi-junction solar cells
Author/s:
  • Espinet González, Pilar
  • García Vara, Iván
  • Rey-Stolle Prado, Ignacio
  • Algora del Valle, Carlos
  • Baudrit, Mathieu
Item Type: Article
Título de Revista/Publicación: Solar Energy Materials and Solar Cells
Date: September 2011
ISSN: 0927-0248
Volume: 95
Subjects:
Freetext Keywords: Solar concentrator; CPV; Multi-junction solar cells; Tunnel junction
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

One of the key components of highly efficient multi-junction concentrator solar cells is the tunnel junction interconnection. In this paper, an improved 3D distributed model is presented that considers real operation regimes in a tunnel junction. This advanced model is able to accurately simulate the operation of the solar cell at high concentraions at which the photogenerated current surpasses the peak current of the tunnel junctionl Simulations of dual-junction solar cells were carried out with the improved model to illustrate its capabilities and the results have been correlated with experimental data reported in the literature. These simulations show that under certain circumstances, the solar cells short circuit current may be slightly higher than the tunnel junction peak current without showing the characteristic dip in the J-V curve. This behavior is caused by the lateral current spreading toward dark regions, which occurs through the anode/p-barrier of the tunnel junction.

More information

Item ID: 16690
DC Identifier: http://oa.upm.es/16690/
OAI Identifier: oai:oa.upm.es:16690
DOI: 10.1016/j.solmat.2011.05.009
Official URL: http://www.sciencedirect.com/science/article/pii/S0927024811002662
Deposited by: Memoria Investigacion
Deposited on: 03 Aug 2013 08:48
Last Modified: 21 Apr 2016 17:03
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