The wearable devices and integrated systems has attracted broad interests in the fields of microelectronics, biomedicine and communication. However, the limitations of rigid, bulky and unifunction in traditional devices restricts the further development of flexible, miniaturized and highly-integrated wearable devices. To this end, advances in the textile industry have suggested a useful direction: all the functional units (such as stimuli-responsive devices and energy devices) can be made into a continuous fiber using a melting or all-solution-based process, and they can be woven into various flexible textiles or easily integrated with each other. Therefore, smart and multi-functional textiles can be produced from these fiber-shaped devices.
Herein, a new family of integrated wearable textiles including stimuli-responsive fibers that are the key to become intelligent and wire-shaped energy devices (perovskite solar cells and supercapacitors) that are essential for wearable devices. Through precisely manipulating the hierarchically helical structures, the responsive fibers can generate large, fast and reversible actuations upon the stimuli of electricity, solvents, vapors, visible-light and thermal. Depended on the flexible, robust and conductive properties in aligned carbon nanotubes, solar cells and supercapacitors can be integrated into fiber substrates with flexibility, stretchability and shape memory effect. These devices can be further effectively integrated to absorb and store solar energy simultaneously and meet the requirements of multiple-function and intelligentization in modern electronics.