Fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires and BaTiO<inf>3</inf>-added SiO<inf>2</inf> capping layers

MoolKyul Kang, Jae Hyun Park, Kyoung Il Lee, Jin Woo Cho, Joonho Bae, Byeong Kwon Ju, Churl Seung Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We report on fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires (NWs). Their piezoelectric properties are further enhanced by incorporating BaTiO<inf>3</inf> into the capping layer on nanowires. Flexibility is improved by a highly transparent carbon nanotubes-silver nanowires electrode. A BaTiO<inf>3</inf>-based capping layer on ZnO nanowires demonstrates a large increase of the output voltage (3.3 V) from the touch sensor compared to the voltage (50 mV). Mechanical bending tests reveal that the BaTiO<inf>3</inf>-added capping layer did not show significant degradation in change of resistance. Our results suggest that the piezoelectric touch sensors are promising for next-generation flexible touch sensors, wearable, and rollable touch panels.

Original languageEnglish
Pages (from-to)2005-2011
Number of pages7
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume212
Issue number9
DOIs
Publication statusPublished - 2015 Sep 1

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touch
Nanowires
nanowires
sensors
Sensors
Carbon Nanotubes
Bending tests
Electric potential
Silver
electric potential
Carbon nanotubes
flexibility
Degradation
Electrodes
carbon nanotubes
silver
degradation
electrodes
output

Keywords

  • BaTiO<inf>3</inf>
  • capping layers
  • flexible devices
  • nanowires
  • optical transparency
  • piezoelectric properties
  • touch sensors
  • ZnO

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires and BaTiO<inf>3</inf>-added SiO<inf>2</inf> capping layers. / Kang, MoolKyul; Park, Jae Hyun; Lee, Kyoung Il; Cho, Jin Woo; Bae, Joonho; Ju, Byeong Kwon; Lee, Churl Seung.

In: Physica Status Solidi (A) Applications and Materials Science, Vol. 212, No. 9, 01.09.2015, p. 2005-2011.

Research output: Contribution to journalArticle

Kang, MoolKyul ; Park, Jae Hyun ; Lee, Kyoung Il ; Cho, Jin Woo ; Bae, Joonho ; Ju, Byeong Kwon ; Lee, Churl Seung. / Fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires and BaTiO<inf>3</inf>-added SiO<inf>2</inf> capping layers. In: Physica Status Solidi (A) Applications and Materials Science. 2015 ; Vol. 212, No. 9. pp. 2005-2011.
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