eprintid: 16690
rev_number: 17
eprint_status: archive
userid: 1903
dir: disk0/00/01/66/90
datestamp: 2013-08-03 08:48:28
lastmod: 2016-04-21 17:03:30
status_changed: 2013-08-03 08:48:28
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Espinet González, Pilar
creators_name: García Vara, Iván
creators_name: Rey-Stolle Prado, Ignacio
creators_name: Algora del Valle, Carlos
creators_name: Baudrit, Mathieu
title: Extended description of tunnel junctions for distributed modeling of concentrator multi-junction solar cells
publisher: Elsevier
rights: by-nc-nd
ispublished: pub
subjects: telecomunicaciones
subjects: renovables
full_text_status: public
keywords: Solar concentrator; CPV; Multi-junction solar cells; Tunnel junction
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.
date_type: published
date: 2011-09
publication: Solar Energy Materials and Solar Cells
volume: 95
number: 9
pagerange: 2693-2697
id_number: 10.1016/j.solmat.2011.05.009
institution: Ies
department: otro
refereed: TRUE
issn: 0927-0248
official_url: http://www.sciencedirect.com/science/article/pii/S0927024811002662
citation:   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 <https://doi.org/10.1016/j.solmat.2011.05.009>. 
document_url: https://oa.upm.es/16690/1/INVE_MEM_2012_135914.pdf