Microcavity-Integrated Colored Semitransparent Hybrid Photovoltaics with Improved Efficiency and Color Purity

We propose semitransparent amorphous silicon (a-Si)/organic hybrid photovoltaic (PV) cells that can create distinctive transmission colors exploiting a microcavity-integrated cathode. Our proposed PV devices not only produce easily tunable semitransparent colors with considerably enhanced color purity that shows even wider color gamut than the standard red, green, and blue color spaces of the liquid crystal display (LCD) technologies but generate doubled short-circuit current density as well, as compared with a previous work that relied on strong resonance effects in ultrathin semiconductor layers. We also investigate the influence of the thickness of the reflector and the cavity layer inside the microcavity on both optical and electrical performances of the colored hybrid PV cells. This study holds promise in realizing various applications, including color displays with low power consumption and power generating panels with aesthetic functionality.