From Event: SPIE Organic Photonics + Electronics, 2016
Here we investigate light trapping substrates and electrodes for enhancing the performance of organic photovoltaics (OPVs). Their power conversion efficiency (PCE) can be improved by a factor of 1.16 using laser patterned PET substrates and by a factor of 1.13 using commercial, structured display films. Furthermore, we prepare light trapping electrodes using as flexible conductive polymer with embedded TiO2 nanoparticles, improving the PCE by a factor of 1.08 as compared to a neat polymer electrode. However, nano-imprinted conductive polymer electrodes does not provide light trapping effect due to the small size (50 nm) of the structures. Moreover flexible OPV devices, integrating the above light trapping elements, show non-degraded performance after bending tests.
Yoonseok Park, Jana Berger, Paul-Anton Will, Marcos Soldera, Bernhard Glatz, Lars Müller-Meskamp, Kurt Taretto, Andreas Fery, Andrés Fabián Lasagni, Koen Vandewal, and Karl Leo, "Light trapping for flexible organic photovoltaics," Proc. SPIE 9942, Organic Photovoltaics XVII, 994211 (Presented at SPIE Organic Photonics + Electronics: September 01, 2016; Published: 26 September 2016); https://doi.org/10.1117/12.2229582.
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