Dual-function optoelectronic polymer device for photoelectric conversion and electroluminescence

A novel polymer-based optoelectronic device is created to independently realize either photoelectric conversion or light emission. It is produced by coating photoactive materials on one side of an aligned carbon nanotube sheet electrode and polymer light-emitting materials on the other through an all-solution process. The power conversion efficiency exceeds 2% and the brightness reaches 1040 cd m(-2) for photoelectric conversion and light emission, respectively. This study indicates a promising potential for the all-solution-based process for a wide variety of applications, including microelectronics, and smart and multi-function devices.