Danish researchers have developed Colorfoil technology for building integrated PV modules, allowing for a wide range of colors with low iridescence and minimal efficiency loss. The Colorfoil is a polymer foil inserted between the encapsulation layer and c-Si solar cells in PV panels, created using nanoimprinting lithography and magnetron sputtering in a roll-to-roll process. Additionally, researchers have developed Solar RRL, a low iridescence optimization methodology for PV modules, aiming to create simple multilayer configurations that reflect specific colors with minimal angular variation. These advancements show promising results in maintaining PV performance and potential for large-scale manufacturing, with future research focusing on implementing the methodology on a larger scale and ensuring the durability of colored PV modules for aesthetically pleasing energy-producing facades.
https://www.pv-magazine.com/2026/01/12/danish-researchers-develop-color-tunable-bipv-foil/