LAUSR

In recent years, indoor organic photovoltaics (IOPVs) have attracted increasing attention because of their ability to power microelectronic devices and sensors, especially for the internet of things (IoT). In contrast with silicon-based indoor PV, the IOPVs exhibit better performance due to their tunable bandgap via molecular design which could achieve a better spectrum matched with the lighting sources. Based on the simulated PCE in theory, the maximum value can achieve over 50% under the white LED illumination, which is much higher than the practically top PCE of 31%, indicating there is room further to improve the performance of IOPVs by various optimization methods. Based on these benefits, we summarize the recent progress in IOPVs with different methods and shed light on the remaining challenges for achieving practical applications in the future. In the end, some guidelines for the development of IOPVs are proposed.