Photovoltaic Performance of Perovskite Solar Cells and Their Continuous Charge Path Control in Electric Vehicles

Perovskite Solar Cells (PSCs) are new thin-film photovoltaic devices that have developed rapidly in recent years. It is considered a promising third-generation solar cell due to its high Monochromatic Incident Photon-to-electron Conversion Efficiency (IPCE), simple preparation process, and low cost. Firstly, the photoelectric characteristics of PSCs with four different structures and light-absorbing materials are analyzed. The results show that when CH3NH3PbI3 is used as the absorbing layer, the perovskite film with a porous structure has good crystallinity, and the photogenerated electron injection of TiO2 is more effective. The photoelectric Conversion Rate (CVR) of Pb-based organic cells with porous structure reaches 14.67%, and the photoelectric CVR of Pb-based organic cells with flat plate structure is only 6.35%. Then, a simple superimposed electrode type PSC is designed. Experiments have shown that the structure can greatly improve IPCE. The Spiro-MeOTAD layer should be retained. When the Layer one spraying amount is 250 mu L, and the Layer two spraying amount is 500 mu L, the IPCE obtained by the battery is the highest. The IPCE of the battery prepared by the ball milling method is higher than that of the battery prepared by the ultrasonic crushing method. Different substrate materials are compared. Using aluminum foil as the substrate can achieve the best photoelectric performance, and the corresponding photoelectric CVR reaches 11.62%. Based on the above test results, superimposed electrode-type PSCs are prepared and used in electric vehicle power generation devices. Super-Capacitor (SC) connection enables continuous charging in low-light conditions. The results show that the SC charges the designed superimposed electrode-type PSCs when the brightness decreases. The timing of charging and discharging is adjusted under the upper and lower limits of the threshold to ensure that the design PSCs remain charged.