Multifunctional perovskite photovoltachromic supercapacitor

New type of photovoltachromic supercapacitor integrating perovskite solar cell and electrochromic supercapacitor are demonstrated. This photovoltachromic supercapacitor provides a seamless integration of energy harvesting and storage device, accompanying with the change in colored states from semitransparent to blue, which prevents the perovskite solar cell from long-time light exposure and enhance its photo-stability.