title: Piezoelectric touch-sensitive flexible hybrid energy harvesting nanoarchitectures.
abstract: In this work, we report a flexible hybrid nanoarchitecture that can be utilized as both an energy harvester and a touch sensor on a single platform without any cross-talk problems. Based on the electron transport and piezoelectric properties of a zinc oxide (ZnO) nanostructured thin film, a hybrid cell was designed and the total thickness was below 500 nm on a plastic substrate. Piezoelectric touch signals were demonstrated under independent and simultaneous operations with respect to photo-induced charges. Different levels of piezoelectric output signals from different magnitudes of touching pressures suggest new user-interface functions from our hybrid cell. From a signal controller, the decoupled performance of a hybrid cell as an energy harvester and a touch sensor was confirmed. Our hybrid approach does not require additional assembly processes for such multiplex systems of an energy harvester and a touch sensor since we utilize the coupled material properties of ZnO and output signal processing. Furthermore, the hybrid cell can provide a multi-type energy harvester by both solar and mechanical touching energies.
authors.affiliation: Samsung Advanced Institute of Technology, Yongin, Korea.
authors.forename: Dukhyun
authors.initials: D
authors.lastname: Choi
authors.forename: Keun Young
authors.initials: KY
authors.lastname: Lee
authors.forename: Kang Hyuck
authors.initials: KH
authors.lastname: Lee
authors.forename: Eok Su
authors.initials: ES
authors.lastname: Kim
authors.forename: Tae Sang
authors.initials: TS
authors.lastname: Kim
authors.forename: Sang Yoon
authors.initials: SY
authors.lastname: Lee
authors.forename: Sang-Woo
authors.initials: SW
authors.lastname: Kim
authors.forename: Jae-Young
authors.initials: JY
authors.lastname: Choi
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Kim