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The effect of TiN deposition time on the field-emission performance coated on ZnO nanorod arrays
- Source :
- Ceramics International. 47:27487-27495
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- ZnO nanorod arrays (NRs) with a large number of sharp tips and uniform shapes were grown on the carbon cloth (CC) by a simple hydrothermal method. Titanium nitride (TiN) nanoparticles with various thicknesses were deposited on the ZnO NRs by magnetron sputtering to obtain ZnO/TiN core-shell arrays. Field emission (FE) performance of ZnO NRs show close dependence on TiN coating thickness. The turn-on field first decreases and then increases with increasing TiN coating thickness from 60 nm to 300 nm. The arrays with a design architecture can strike a balance between increased emission sites and limited field shielding effects. ZnO/TiN240 core-shell NRs have the lower turn-on electric field at 0.79 V/μm and the higher current densities at 9.39 mA/cm2. The field enhancement factor (β) of ZnO/TiN240 is about 3.2 times that of the bare ZnO NRs. On the other hand, the electrochemical properties were improved due to the formation of core-shell heterojunction on the ZnO/TiN interface and porous structure, which makes the ion and charge transport more convenient. Hence, this work not only revealed that the ZnO/TiN core-shell structure exhibited excellent improvement in both FE and supercapacitors applications, but also that growing arrays on CC was expected to achieve flexible display.
- Subjects :
- Materials science
chemistry.chemical_element
Nanoparticle
02 engineering and technology
engineering.material
01 natural sciences
chemistry.chemical_compound
Coating
0103 physical sciences
Materials Chemistry
010302 applied physics
business.industry
Process Chemistry and Technology
Heterojunction
Sputter deposition
021001 nanoscience & nanotechnology
Titanium nitride
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Field electron emission
chemistry
Ceramics and Composites
engineering
Optoelectronics
Nanorod
0210 nano-technology
Tin
business
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........7eed467c9926402716ec72535cb3bf9a