Highly sensitive non-contact shunt detection of organic photovoltaic modules

Organic photovoltaics (OPV) have been shown to have excellent indoor efficiency at light intensities as low as one 10W/m2. To fully explore their low light efficiency potential, the density as well as severeness of shunts must be kept as low as possible. In this communication we discuss a novel ther...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2012-06, Vol.101, p.176-179
Main Authors: Bachmann, Jonas, Buerhop-Lutz, Claudia, Steim, Roland, Schilinsky, Pavel, Hauch, Jens A., Zeira, Eitan, Christoh J., Brabec
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Energy
Equipments, installations and applications
Exact sciences and technology
Lock-in thermography
Natural energy
Organic solar cell
Photoelectric conversion
Photovoltaic conversion
Power networks and lines
Shunt
Solar cells. Photoelectrochemical cells
Solar energy
Users connections and in door installation
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Summary:Organic photovoltaics (OPV) have been shown to have excellent indoor efficiency at light intensities as low as one 10W/m2. To fully explore their low light efficiency potential, the density as well as severeness of shunts must be kept as low as possible. In this communication we discuss a novel thermography method allowing to image the shunt distribution in organic solar modules with no electrical contact to the module. This thermography method is based on light excitation (ILIT—illuminated lock in thermography) instead of dark current excitation (DLIT—dark lock-in thermography). Comparison of ILIT with DLIT images reveals the equivalence of these two modes for shunt detection, with ILIT having the advantage of being performed in non-contact mode.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2012.01.022