| 초록 |
Mechanical energy scavengers utilizing piezoelectricity have attracted great attention because they are suitable for a variety of applications ranging from electronic systems to molecular sensors. Intensive studies regarding piezoelectric nanogenerators have been explored, demonstrating new implications such as fiber-type energy scavengers, piezotronic strain sensors, and Schottky contact-based nano/biosensors in a self-powered mode. In the meeting, I will present the fabrication and characterization of graphene electrode-based large-scale nanogenerators that are operated by flexing the device itself, showing direct-current (DC)-type charge generation. Such nanogenerators lead to new types of embeddable energy harvesting technologies and new implications such as deformable mobile electronics or tactile skin sensors. In addition, the output potentials generated by vertical pushing and lateral bending to vertically aligned nanorods will be compared using numerical and analytical calculations. ZnO nanogenerator directly outputs DC signal by integrating a semiconductor-metal Schottky junction with piezoelectric nanowires. This talk will view the fundamentals of the interactions between piezopotential and semiconducting properties. |
