Theoretical design of multi-colored semi-transparent organic solar cells with both efficient color filtering and light harvesting

• DOI: 10.1038/srep07036
• Publication Date: 2014-11-13T10:06:42Z
• Authors: Long Wen; Qin Chen; Fuhe Sun; Shichao Song; Lin Jin; Yan Yu
• Keywords: Visible spectrum; Colored; Color filter array

Abstract Solar cells incorporated with multi-coloring capability not only offer an aesthetic solution to bridge the gap between solar modules and building decorations but also open up possibility for self-powered colorful display. In this paper, we proposed a multi-colored semi-transparent organic (TOSCs) design containing metallic nanostructures both high color purity efficiency based on theoretical considerations. By employing guided mode resonance effect, TOSC behave like efficient filter that selectively transmits light desired wavelengths generates electricity of other wavelengths. Broad range coloring luminosity adjusting transmission can be achieved by simply tuning period duty cycle nanostructures. Furthermore, accompanying filtering characteristics, optical absorption TOSCs was improved due marked suppression loss at off-resonance increased trapping in TOSCs. The mechanisms guiding photoactive layer broadband backward scattering from were identified make essential contribution light-harvesting. enabling control simultaneously, approach holds great promise future versatile photovoltaic energy utilization.