Wireless portable light-weight self-charging power packs by perovskite-organic tandem solar cells integrated with solid-state asymmetric supercapacitors

摘要

Self-charging power packs possess great potential applications in the micro-systems,but these electric circuits are required to be portable,light-weight and even wireless connected for practical applications,in particular,in the wearable and portable electronics.In this study,we report wireless portable light-weight solution-processed selfcharging power packs by tandem solar cells integrated with solid-state asymmetric supercapacitors through solution-processed electrical conductive polymeric thin film.Towards the end,we first develop solutionprocessed tandem solar cells by perovskite solar cells (PSCs) combined with ternary organic solar cells (OSCs) for achieving large operational voltage.We then develop solid-state asymmetric supercapacitors by both novel positive electrode and solid-state polymeric electrolytes for enhancing the energy density and cycling stability.After that,we integrate PSCs-OSCs tandem solar cells with solid-state asymmetric supercapacitors through solution-processed electrical conductive polymeric thin film to build wireless portable light-weight solutionprocessed self-charging power packs.This novel self-charging power packs not only possess advanced features such as portable,light-weight and wireless connection,but also exhibit excellent electric-circuit device performance,such as with an overall efficiency of 12.43 and an energy storage efficiency of 72.4 under white light illumination.All these results demonstrate that the wireless portable light-weight self-charging power packs through utilization of tandem solar cells as the renewable energy source and solid-state asymmetric supercapacitors as the energy storage device connected with solution-processed electrical conductive polymeric thin film,for the first time,are developed.