Efficient Semi‐Transparent Organic Solar Cells with Good Transparency Color Perception and Rendering Properties |
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Authors: | Alexander Colsmann Andreas Puetz Andreas Bauer Jonas Hanisch Erik Ahlswede Uli Lemmer |
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Affiliation: | 1. Light Technology Institute, Karlsruhe Institute of Technology (KIT), Kaiserstrasse 12, 76131 Karlsruhe, Germany;2. Zentrum für Sonnenenergie‐und Wasserstoffforschung, Baden‐Wuerttemberg, Industriestrasse 6, 70669 Stuttgart, Germany |
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Abstract: | Window integrated photovoltaics for automotive and building applications are a promising market segment for organic solar modules. Besides semi‐transparency, window integrated applications require a reasonable transparency perception and good color rendering properties in order to be suitable for realistic scene illumination. Here, the transmitted light through semi‐transparent organic solar cells comprising the polymer/fullerene blend poly[(4,4'‐bis(2‐ethylhexyl)dithieno[3,2‐b:2',3'‐d]silole)‐2,6‐diyl‐alt‐(2,1,3‐benzothiadiazole)‐4,7‐diyl]: [6,6]‐phenyl C71‐butric acid methyl ester (PSBTBT:PC70BM) as active layer and a sputtered aluminum doped zinc oxide cathode were found to exhibit a color neutral perception for the human eye and very good color rendering properties. Moreover, the electrical cell properties allow for efficient energy harvesting with an overall power conversion efficiency η ≈ 3%. |
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Keywords: | Polymer solar cell organic semi‐transparent color perception color rendering |
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