Title :
Modelling the effects of distributed series resistance on Suns-Voc, m-Voc and Jsc-Suns curves of solar cells
Author :
Kunz, O. ; Varlamov, S. ; Aberle, A.G.
Author_Institution :
Photovoltaics Centre of Excellence, Univ. of New South Wales, Sydney, NSW, Australia
Abstract :
A simple model based on the simulation of distributed series resistance effects in solar cells is presented. This model overcomes limitations of the standard two-diode model representation of solar cells in respect to fitting Suns-Voc (m-Voc) and Jsc-Suns curves. The model results include (i) an improved understanding of two-dimensional current flows in shunted solar cells, (ii) the prediction of shunt types from m-Voc curves and corresponding distributed resistance model fits, (iii) the insight that lateral current flows in solar cells are responsible for deviations between Jsc-Suns data and two-diode model fits in the high illumination range. The presented approach extends the application range of Suns-Voc measurements to solar cells which cannot adequately be described with the two-diode model.
Keywords :
electrical resistivity; elemental semiconductors; semiconductor device models; semiconductor thin films; silicon; solar cells; thin film devices; Si; distributed series resistance; illumination; poly-Si thin-film solar cells; two-dimensional current flows; two-diode model; Circuit simulation; Current density; Diodes; Electrical resistance measurement; Equivalent circuits; Fingers; Particle measurements; Photovoltaic cells; Predictive models; Surface resistance;
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2009 34th IEEE
Conference_Location :
Philadelphia, PA
Print_ISBN :
978-1-4244-2949-3
Electronic_ISBN :
0160-8371
DOI :
10.1109/PVSC.2009.5411707
