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Mechanically Powered Transparent Flexible Charge‐Generating Nanodevices with Piezoelectric ZnO Nanorods
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- Authors
- Min Yeol Choi, Duk Hyun Choi, Mi Jin Jin, In Soo Kim, Sang Hyeob Kim, Jae Young Choi, Sang Yoon Lee, Jong Min Kim, Sang Woo Kim
- Issue Date
- 2009-06
- Citation
- Advanced Materials, v.21, no.21, pp.2185-2189
- ISSN
- 0935-9648
- Publisher
- WILEY-VCH Verlag GmbH & Co. KGaA
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- 000 rpm, 1D nanostructure, Accelerating voltage, Fully integrated, Plastic substrate, Seed layer, Self-Powered, Spin-coated, Zinc acetate dehydrate, ZnO nanorod, aqueous solution method