Aperiodic optical coatings for neutral-color semi-transparent organic photovoltaics

Semi-transparent organic photovoltaics (ST-OPVs) have the potential for integration with windows for ubiquitous power generating applications. Typically, such applications require that ST-OPVs be neutrally transparent across the visible and exhibit both a high average photopic transmittance (APT) an...

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Bibliographic Details
Published in:Applied physics letters 2021-01, Vol.118 (3)
Main Authors: Sheriff, Hafiz K. M., Li, Yongxi, Qu, Boning, Forrest, Stephen R.
Format: Article
Language:English
Subjects:
Applied physics
Chromaticity
Coatings
Color
Energy conversion efficiency
Genetic algorithms
Incidence angle
Microscopes
Optical coatings
Optical properties
Photovoltaic cells
Transfer matrices
Transmittance
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Summary:Semi-transparent organic photovoltaics (ST-OPVs) have the potential for integration with windows for ubiquitous power generating applications. Typically, such applications require that ST-OPVs be neutrally transparent across the visible and exhibit both a high average photopic transmittance (APT) and color rendering index, as well as iso-energetic chromaticity coordinates. In this work, we demonstrate the design and use of optical coatings to achieve ST-OPVs with a neutral visible transmittance of APT = 50%, a power conversion efficiency of 8.3%, and optical properties that are independent of a ± 30° variation in the solar angle of incidence. These simple optical coatings are rapidly designed using a genetic algorithm and transfer matrix formalism.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0037104