Experimental Demonstration of Optically Determined Solar Cell Current Transport Efficiency Map

A recently suggested reciprocity relation states that the current transport efficiency from the junction to the cell terminal can be determined by differentiating luminescence images with respect to the terminal voltage. The validity of this relation is shown experimentally in this paper, by compari...

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Bibliographic Details
Published in:IEEE journal of photovoltaics 2016-03, Vol.6 (2), p.528-531
Main Authors: Delamarre, Amaury, Lombez, Laurent, Watanabe, Kentaroh, Sugiyama, Masakazu, Nakano, Yoshiaki, Guillemoles, Jean-Francois
Format: Article
Language:English
Subjects:
Characterization of photovoltaics
Current measurement
electroluminescence
Junctions
Lighting
Luminescence
Optics
Photovoltaic cells
Physics
Sun
transport efficiency
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Summary:A recently suggested reciprocity relation states that the current transport efficiency from the junction to the cell terminal can be determined by differentiating luminescence images with respect to the terminal voltage. The validity of this relation is shown experimentally in this paper, by comparison with simultaneously measured electrical currents and simulations. Moreover, we verify that the method is applicable under various light concentrations and applied voltages, which allows us to investigate the cell in relevant conditions. Results evidence several kinds of series resistances affecting the current transport efficiencies. We show that the relative contribution of those different resistances to the loss in current collection is a function of the illumination intensity.
ISSN:2156-3381
2156-3403
DOI:10.1109/JPHOTOV.2016.2516249