Trans‐Reflective Dichroic Display‐Integrated Colorful Semi‐Transparent Organic Photovoltaic Glass

ABSTRACT Display‐integrated organic photovoltaic (OPV) glass merges building‐integrated photovoltaics (BIPV) and display technologies, integrating power generation, visualization and aesthetics. To holistically assess the performance of colorful semi‐transparent OPV glass, particularly the trade‐off among power conversion efficiency (PCE), transmission (T), and color purity (CP), we first introduce a comprehensive figure of merit (FoM = PCE×T MAX ×CP) and demonstrate an optimized antisymmetric metal‐dielectric‐metal‐dielectric color filter designed to enhance these parameters simultaneously. By depositing a top dielectric layer with a thickness of λ /4 n , we achieve optical field truncation at the dielectric‐metal interface, enhance the reflection of non‐resonance wavelength. This results in significantly improved transmission, color purity at the target wavelength, external quantum efficiency, and overall FoM. The resulting double‐sided heterochromatic Janus structure also enables trans‐reflective dual‐mode display functionality, achieving record FoM values of 4.71%, 2.04%, and 2.29% for blue, green, and red semi‐transparent OPVs, respectively, which are among the highest reported to date for such devices. Additionally, the fabricated photovoltaic glasses exhibit exceptional ultraviolet blocking (94.2%) and near‐infrared rejection (99.0%), along with improved thermal insulation (reducing temperature rise by 1.6°C). This work advances multifunctional BIPV glass with photoprotection, energy harvesting, aesthetic coloring, and self‐powered dichroic display.