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VOx effectively doping CVD-graphene for transparent conductive films
- Source :
- Applied Surface Science. 387:51-57
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Chemical vapor deposition(CVD)-synthesized graphene is potentially an alternative for tin-doped indium oxide (ITO) transparent conductive films (TCFs), however its sheet resistance is still too high to meet many demands. Vanadium oxide has been widely applied as smart window materials, however, no study has been reported to use it as dopant to improve the conductivity of graphene TCFs. In this study, we firstly reported that VOx doping can effectively lower the sheet resistance of CVD-graphene films while keeping its good optical properties, whose transmittance is as high as 86–90%. The optimized VOx-doped graphene exhibits a sheet resistance as low as 176 Ω/□, which decreases by 56% compared to the undoped graphene films. The doping process is convenient, stable, economical and easy to operate. What is more, VOx can effectively increase the work function(WF) of the film, making it more appropriate for use in solar cells. The evolution of the VOx species annealed at different temperatures below 400 °C has been detailed studied for the first time, based on which the doping mechanism is proposed. The prepared VOx doped graphene is expected to be a promising candidate for transparent conductive film purposes.
- Subjects :
- Materials science
Dopant
Graphene
Doping
General Physics and Astronomy
Nanotechnology
02 engineering and technology
Surfaces and Interfaces
General Chemistry
Chemical vapor deposition
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Vanadium oxide
0104 chemical sciences
Surfaces, Coatings and Films
law.invention
Surface coating
law
Work function
0210 nano-technology
Sheet resistance
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 387
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi...........0741a044db1eb24b9f8697af243cde7e