A self-powered and high-voltage-isolated organic optical communication system based on triboelectric nanogenerators and solar cells

摘要

Optoelectronic devices and self-powered technology can greatly contribute to the multifunctionality of information interaction. In this study, a self-powered organic optical communication system (SOCS) is demonstrated. The new system is composed of an organic light-emitting diode (OLED) driven by the triboelectric nanogenerators (TENGs) and a perovskite photodetector (PPD) supplied by the solar cell. Owing to the excellent performance of the optocoupler, the SOCS can effectively convert mechanical signals into light and then voltage signals, and synchronously, information transmission is achieved between two insulated units. With the SOCS, mechanical taping on different areas of the TENGs is encoded as binary to achieve a large amount of data transmission, and, a robotic hand is successfully controlled to complete different actions, which presents an intelligent application of SOCS in human-machine interaction. Moreover, the SOCS is capable of isolating the voltage difference of 2000 V between two isolated units and shows great adaptability in the extreme environment. This work not only greatly expands the application of TENGs and solar cells as power sources for self-powered electronics but also presents a new concept to achieve human-machine interaction.