Mechanically powered transparent flexible charge-generating nanodevices with piezoelectric ZnO nanorods

Min Yeol Choi, Dukhyun Choi, Mi Jin Jin, Insoo Kim, Sang Hyeob Kim, Jae Young Choi, Sang Yoon Lee, Jong Min Kim, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review


The creation of fully integrated ZnO 1D nanostructure-based piezoelectric charge-generating devices suitable for use as transparent, flexible (TF) self-powered pressure sensors, which are driven by mechanical forces without any electrical sources, was studied. ZnO nanorods on a flexible plastic substrate were prepared using an aqueous solution method. Zinc acetate dehydrate was dissolved in ethanol that had been heated at 90°C. The seed solution was dropped onto the substrate and spin coated at 1000 rpm for 60s. The spin-coated substrate covered with a ZnO-seed layer, was dried onto a hot template at 100°C. FE SEM was performed and HRTEM was carried out using a JEOL 2010F TEM (field emission) with an accelerating voltage of 200 kV. A TF piezoelectric nanodevice with ITO/PES top electrode gave a current density of δ1μA cm-2 which is sufficient for use as a force/pressure sensor.

Original languageEnglish
Pages (from-to)2185-2189
Number of pages5
JournalAdvanced Materials
Issue number21
Publication statusPublished - 2009 Jun 5

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Mechanically powered transparent flexible charge-generating nanodevices with piezoelectric ZnO nanorods'. Together they form a unique fingerprint.

Cite this