Flexible Ultraviolet and Ambient Light Sensor Based on a Nanomaterial Network Fabricated Using Selective and Localized Wet Chemical Reactions

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We report ZnO nanowire- and TiO2 nanotube-based light sensors on flexible polymer substrates fabricated by localized hydrothermal synthesis and liquid phase deposition (LPD). This method realized simple and cost-effective in situ synthesis and integration of one-dimensional ZnO and TiO2 nanomaterials. The fabricated sensor devices with ZnO nanowires and TiO2 nanotubes show very high sensitivity and quick response to the ultraviolet (UV) and ambient light, respectively. In addition, our direct synthesis and integration method result in mechanical robustness under external loading such as static and cyclic bending because of the strong bonding between the nanomaterial and the electrode. By controlling the reaction time of the LPD process, the Ti/Zn ratio could be simply modulated and the spectral sensitivity to the light in the UV to visible range could be controlled.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-04
Language
English
Article Type
Article
Keywords

FIELD-EFFECT TRANSISTORS; ZNO NANOWIRE ARRAY; GAS SENSORS; THIN-FILMS; THERMAL-CONDUCTIVITY; WORK FUNCTION; UV SENSOR; TIO2; SENSITIVITY; PERFORMANCE

Citation

LANGMUIR, v.34, no.14, pp.4132 - 4141

ISSN
0743-7463
DOI
10.1021/acs.langmuir.7b02332
URI
http://hdl.handle.net/10203/242368
Appears in Collection
ME-Journal Papers(저널논문)
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