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Fabrication, Optical Modeling, and Color Characterization of Semitransparent Bulk‐Heterojunction Organic Solar Cells in an Inverted Structure
Author(s) -
Ameri Tayebeh,
Dennler Gilles,
Waldauf Christoph,
Azimi Hamed,
Seemann Andrea,
Forberich Karen,
Hauch Jens,
Scharber Markus,
Hingerl Kurt,
Brabec Christoph J.
Publication year - 2010
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201000176
Subject(s) - materials science , optoelectronics , organic solar cell , fabrication , band gap , polymer solar cell , active layer , characterization (materials science) , photodiode , electrode , oled , optics , layer (electronics) , solar cell , nanotechnology , composite material , medicine , chemistry , alternative medicine , thin film transistor , physics , pathology , polymer
Semitransparent inverted organic photodiodes are fabricated with a Baytron PH500 ethylene‐glycol layer/silver grid as the top electrode. Reasonable performances are obtained under both rear‐ and front‐side illumination and efficiencies up to 2% are achieved. Some light is shed on visual prospects through optical simulations for a semitransparent device of poly(3‐hexylthiophene) (P3HT) and the C60 derivative 1‐(3‐methoxycarbonyl)propyl‐1‐phenyl[6,6]C 71 (PC70BM) in the inverted structure. These calculations allow the maximum efficiency achievable to be predicted for semitransparent cells based on P3HT:PC70BM versus the transparency perception for a human eye. The simulations suggest that low‐bandgap materials such as poly[2,6‐(4,4‐bis‐(2‐ethylhexyl)‐4H‐cyclopenta[2,1‐b;3,4‐b′]dithiophene)‐alt‐4,7‐(2,1,3‐benzothiadiazole)] (PCPDTBT) have a better potential for semitransparent devices. In addition, the color range recognized by the human eye is predicted by the optical simulation for some semitransparent devices including different active layers.