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Effects of lateral resistances in photovoltaic cells and full 2-D parameter extraction for the spatially-resolved models using electroluminescence images

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conference contribution
posted on 09.06.2015, 13:42 by Xiaofeng Wu, Martin Bliss, Tom Betts, Ralph Gottschalg
This paper investigates the influences of the lateral resistances in photovoltaic (PV) devices, and proposes a method for extracting local electrical parameters of thin-film PV devices based on a 2-D spatially-resolved model utilising electroluminescence (EL) images and 2-D fittings. PV-oriented nodal analysis (PVONA) is used for studying the electrical properties of the devices and for simulations in iterative 2-D fitting processes. It is shown that the effects of the lateral resistances should not be simply replaced by lumped effective resistances. The proposed new method employs firstly the dark-I-V fitting for the junction parameters; and secondly 2-D fitting of EL images taken under varying bias levels, for the internal and lateral series resistances. The method is verified by a case study and demonstrates excellent agreements with measurement data.
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School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

11th Photovoltaic Science Application and Technology (PVSAT-11)

Pages

61 - 64

Citation

WU, X. ... et al, 2015. Effects of lateral resistances in photovoltaic cells and full 2-D parameter extraction for the spatially-resolved models using electroluminescence images. Hutchins, M. and Cole, A. (eds). 11th Photovoltaic Science, Applications and Technology Conference C97: PVSAT-11, University of Leeds, Leeds, UK, 15th-17th April 2015, pp.61-64

Publisher

© The Solar Energy Society

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper is also available online at: http://www.pvsat.org.uk/docs/pvsat11.pdf

ISBN

0904963810

Language

en

Location

Leeds

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