Non-Stationary Outdoor EL-Measurements with a Fast and Highly Sensitive InGaAs Camera

Adams J, Doll B, Buerhop-Lutz C, Pickel T, Teubner J, Camus C, Brabec C (2016)


Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2016

Pages Range: 1837 - 1841

Conference Proceedings Title: 32nd European Photovoltaic Solar Energy Conference and Exhibition

Event location: München

ISBN: 3-936338-41-8

Abstract

A fast and non-destructive failure inspection is essential to ensure the reliability of PV plants. This
might only be achieved by using highly sensitive imaging techniques which can detect local electrical losses in solar
modules. Here, EL imaging used for outdoor PV inspection gained large interest, since it can be used to characterize
local cell damages, series resistances, and shunts in solar modules. However, currently available EL-cameras base on
Si-CCD-detectors. Besides high spatial resolutions they exhibit long image integration times (IIT) of about 1 s for
obtaining evaluable EL-images. To overcome this limitation we present, for the first time, an InGaAs camera which
enables a complete EL-characterization of field-installed PV-modules with IITs between 1 ms and 20 ms. The short
IITs result in frame rates of about 100 Hz which even offer the opportunity of recording dynamic EL-movies and
daylight Electroluminescence Lock-In (ELLI) measurements. To test the outdoor applicability we compared ELmovies
of the InGaAs camera with EL-images of a Si-CCD camera and show that all relevant power reducing cell
failures (e. g. cracks) can be detected and characterized.

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How to cite

APA:

Adams, J., Doll, B., Buerhop-Lutz, C., Pickel, T., Teubner, J., Camus, C., & Brabec, C. (2016). Non-Stationary Outdoor EL-Measurements with a Fast and Highly Sensitive InGaAs Camera. In 32nd European Photovoltaic Solar Energy Conference and Exhibition (pp. 1837 - 1841). München.

MLA:

Adams, Jens, et al. "Non-Stationary Outdoor EL-Measurements with a Fast and Highly Sensitive InGaAs Camera." Proceedings of the 32nd European Photovoltaic Solar Energy Conference and Exhibition, München 2016. 1837 - 1841.

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