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Fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires and BaTiO 3 ‐added SiO 2 capping layers
Author(s) -
Kang MoolKyul,
Park Jae Hyun,
Lee Kyoung Il,
Cho Jin Woo,
Bae Joonho,
Ju Byeong Kwon,
Lee Churl Seung
Publication year - 2015
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431829
Subject(s) - materials science , nanowire , piezoelectricity , layer (electronics) , optoelectronics , nanogenerator , electrode , voltage , nanotechnology , flexibility (engineering) , composite material , electrical engineering , chemistry , statistics , mathematics , engineering
We report on fully flexible and transparent piezoelectric touch sensors based on ZnO nanowires (NWs). Their piezoelectric properties are further enhanced by incorporating BaTiO 3 into the capping layer on nanowires. Flexibility is improved by a highly transparent carbon nanotubes–silver nanowires electrode. A BaTiO 3 ‐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 3 ‐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.