Publication: Characterisations and DSSC efficiency test of TiO2 nano-films formed by filtered cathodic vacuum arc deposition
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Issued Date
2017
Resource Type
File Type
application/pdf
ISSN
14757435
Other identifier(s)
2-s2.0-85014107238
Rights Holder(s)
Scopus
Bibliographic Citation
International Journal of Nanotechnology. Vol 14, No.44348 (2017), p.481-495
Suggested Citation
Aramwit C., Yu L.D., Gregoratti L., Choopun S., Intarasiri S., Bootkul D., Tippawan U. Characterisations and DSSC efficiency test of TiO2 nano-films formed by filtered cathodic vacuum arc deposition. International Journal of Nanotechnology. Vol 14, No.44348 (2017), p.481-495. doi:10.1504/IJNT.2017.082383 Retrieved from: https://hdl.handle.net/20.500.14740/4771
Abstract
For photovoltaic applications in dye-sensitised solar cells (DSSC), used as a wide band semiconductor layer, titanium dioxide (TiO2) nano-films were formed by the filtered cathodic vacuum arc deposition (FCVAD) technique using Ti as the cathode and controlled oxygen (O2) gas inlet under varied deposition and post-deposition annealing conditions. The deposition conditions included the O2 pressure as the key parameter and others such as deposition time and bias. The work was aimed at investigating the FCVAD condition effect on the TiO2 film characteristics and thus the solar cell efficiency. The formed films were characterised using optical microscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy and scanning photoemission microscopy (SPEM) techniques. All the characterisations revealed that the film transparency increased and thickness decreased to a nanoscale with increasing of the O2 pressure, the transparent deposited films contained stoichiometric titanium and oxygen under the medium O2 pressure, the as-deposited films were TiO2 containing some rutile but without anatase, and the annealing improved the film quality by introducing anatase and increasing the Ti-oxide. Test of the films for the DSSC-photovoltaic property efficiency showed that the efficiency of using the annealed films was 104 times that of using the as-deposited films, indicating the crucial significance of the anatase. Copyright © 2017 Inderscience Enterprises Ltd.
Subject(s)
Annealing
Atomic force microscopy
Deposition
Energy dispersive spectroscopy
Films
Magnetic semiconductors
Oxide films
Oxide minerals
Scanning electron microscopy
Solar power generation
Titanium dioxide
Vacuum applications
Vacuum technology
Energy dispersive X ray spectroscopy
Filtered cathodic vacuum arc deposition
Oxygen pressure
Photoemission microscopy
Photovoltaic applications
Post deposition annealing
Titanium dioxides (TiO2)
Wide band semiconductors
Dye-sensitized solar cells
Atomic force microscopy
Deposition
Energy dispersive spectroscopy
Films
Magnetic semiconductors
Oxide films
Oxide minerals
Scanning electron microscopy
Solar power generation
Titanium dioxide
Vacuum applications
Vacuum technology
Energy dispersive X ray spectroscopy
Filtered cathodic vacuum arc deposition
Oxygen pressure
Photoemission microscopy
Photovoltaic applications
Post deposition annealing
Titanium dioxides (TiO2)
Wide band semiconductors
Dye-sensitized solar cells