An integrated device for both photoelectric conversion and energy storage based on free-standing and aligned carbon nanotube film

An all-solid-state and integrated device in which photoelectric conversion and energy storage are simultaneously realized has been developed from free-standing and aligned carbon nanotube films or carbon nanotube-polyaniline composite films. Due to the aligned structure and excellent electronic property of the film electrode, the integrated device exhibits a high entire photoelectric conversion and storage efficiency of ∼5.12%. The novel devices can also be flexible, and show promising applications in a wide variety of fields, particularly for portable electronic equipment.