Flexible nanogenerators for self-powered touch and light sensor applications

Keun Young Lee; Dukhyun Choi; Jae-Young Choi; Sang-Woo Kim

doi:10.1117/12.872900

24 January 2011 Flexible nanogenerators for self-powered touch and light sensor applications

Keun Young Lee, Dukhyun Choi, Jae-Young Choi, Sang-Woo Kim

Proceedings Volume 7945, Quantum Sensing and Nanophotonic Devices VIII; 794526 (2011) https://doi.org/10.1117/12.872900
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Here we report a flexible piezoelectric nanodevices (nanogenerators) that can be utilized as both a touch sensor and a light sensor on a single platform. Based on the electron transporting and piezoelectric properties of ZnO, nanogenerators with a ZnO/conjugated polymer stacked structure was designed on a plastic substrate. Piezoelectric touch signals were demonstrated under independent and simultaneous operations with respect to photo-induced charges (photodetection). Different levels of piezoelectric output signals from different magnitude of touching pressures suggest new user-interface functions from our hybrid nanogenerators. From a signal controller, the decoupled performance of a hybrid nanogenerator as a touch sensor and a light sensor was confirmed. Our hybrid approach does not require additional assembling processes for such multiplex systems of a touch sensor and a light sensor since we utilize the coupled material properties of ZnO and output signal processing. Moreover, it should be noted that the hybrid nanogenerator can be operated in a self-powered mode without any power supply.

Citation Download Citation

Keun Young Lee, Dukhyun Choi, Jae-Young Choi, and Sang-Woo Kim "Flexible nanogenerators for self-powered touch and light sensor applications", Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 794526 (24 January 2011); https://doi.org/10.1117/12.872900

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