Regensburg 2010 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 62: Poster II: Photovoltaics and Organic Semiconductors
HL 62.25: Poster
Thursday, March 25, 2010, 18:00–20:00, Poster D2
Optimization of Cu(In,Ga)Se2 solar cells under different irradiance — •Sebastian Jander1,2, Stefan Puttnins1,2, Andreas Rahm1, and Marius Grundmann2 — 1Solarion AG, Ostende 5, 04288 Leipzig, Germany — 2Institut für Experimentelle Physik II, Universität Leipzig, Linnéstraße 5, 04103 Leipzig, Germany
Cu(In,Ga)Se2 (CIGSe) solar cells on flexible substrates open up new fields of applications for photovoltaics. This could be building integrated photovoltaics, lightweight construction photovoltaic modules or integrated modules in clothes or pockets for charging iPods, mobile phones or laptops.
Depending on their application these solar cells operate at different irradiances und types of illumination. Therefore real working conditions have to be considered besides the standard test conditions (AM 1.5 spectrum with 1000 W/m2).
The influences of parallel and series resistance, the diode quality factor and other parameters were evaluated in detail on the basis of measurements and model calculations for different irradiances. Additionally, influences of various production parameters in the manufacturing of solar cells from the Solarion AG were investigated and analyzed. We show correlation between Cu/III ratio of CIGSe, i-ZnO layer thickness and metallic grid design with low light intensity performance.
Using these results optimized solar cells and modules can be manufactured for the mentioned applications and illumination conditions.