Building-integrated photovoltaic (BIPV) systems significantly enhance the energy efficiency of buildings. This paper introduces a novel coloring technology for BIPV that merges aesthetic appeal with high energy performance through the use of liquid crystal-based colored interference coatings. These coatings selectively reflect and transmit light, aiming to optimize both color vibrancy and solar power efficiency. The study unfolds in two segments: initially, we discuss transmission measurements that evaluate the optical properties of these coatings in comparison to traditional BIPV systems. These measurements indicate a theoretical power loss ranging from 10% to 35% for most graphic design customizations, using standard black modules as a benchmark. Subsequently, we explore I-V measurements of a photovoltaic module laminated with one of these colored films, including graphic elements, to assess its performance, which shows a loss of 16% compared to a black reference model. Following this, a benchmark comparison with other BIPV coloring techniques is provided, highlighting the unique benefits and challenges of our method. The results demonstrate that our approach not only enhances the aesthetic value of building facades but also maintains a robust energy output. By detailing how these coatings manage light and energy, we show their potential to significantly improve energy-efficient building designs.
Max van Dijken
Soltint: high performance BIPV design customization
Company: SOL-R&D, The Netherlands
About the speaker:
Max van Dijken is a design-driven energy innovator focused on building-integrated photovoltaics (BIPV). With a background in industrial design engineering and glass processing. He specializes in merging aesthetics with solar technology. As co-founder of SOL-R&D, he works on scalable, customizable solar solutions for architectural integration, combining interdisciplinary research with commercial application.