Piezoelectric touch-sensitive flexible hybrid energy harvesting nanoarchitectures

Dukhyun Choi, Keun Young Lee, Kang Hyuck Lee, Eok Su Kim, Tae Sang Kim, Sang Yoon Lee, Sang Woo Kim, Jae Young Choi, Jong Min Kim

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


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.

Original languageEnglish
Article number405503
Issue number40
Publication statusPublished - 2010 Oct 8

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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