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Proceedings Paper

Flexible nanogenerators for self-powered touch and light sensor applications
Author(s): Keun Young Lee; Dukhyun Choi; Jae-Young Choi; Sang-Woo Kim
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Paper 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.

Paper Details

Date Published: 24 January 2011
PDF: 4 pages
Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 794526 (24 January 2011); doi: 10.1117/12.872900
Show Author Affiliations
Keun Young Lee, Sungkyunkwan Univ. (Korea, Republic of)
Dukhyun Choi, Kyung Hee Univ. (Korea, Republic of)
Jae-Young Choi, Samsung Advanced Institute of Technology (Korea, Republic of)
Sang-Woo Kim, Sungkyunkwan Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7945:
Quantum Sensing and Nanophotonic Devices VIII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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