Asif Tahir | University of Exeter (original) (raw)
Papers by Asif Tahir
Nanostructured nickel oxide (NiO) photoelectrodes were fabricated with controlled morphology and ... more Nanostructured nickel oxide (NiO) photoelectrodes were fabricated with controlled morphology and texture using single-step aerosol-assisted chemical vapour deposition (AACVD). The durable one-step film fabrication process resulted in highly crystalline columnar structure. Texture controlled films were also fabricated from granular to crystalline columnar morphology by controlling the deposition temperature. The thin film electrodes are highly reproducible and possess an optical bandgap of ∼3.7 eV and exhibit cathodic photocurrent.
Nanostructured α-Fe2O3 thin film electrodes were deposited by aerosol-assisted chemical vapour de... more Nanostructured α-Fe2O3 thin film electrodes were deposited
by aerosol-assisted chemical vapour deposition (AACVD) for
photoelectrochemical (PEC) water splitting on conducting
glass substrates using 0.1 M methanolic solution of Fe(acac)3.
The XRD analysis confirmed that the films are highly crystalline
α-Fe2O3 and free from other iron oxide phases. The
highly reproducible electrodes have an optical bandgap of
~2.15 eV and exhibit anodic photocurrent. The current–
voltage characterization of the electrodes reveals that the photocurrent
density strongly depended on the film morphology (SEM) analysis showed a change in the surface morphology
with the change in deposition temperature. The films deposited
at 450 °C have nanoporous structures which provide a
maximum electrode/electrolyte interface. The maximum photocurrent
density of 455 μA/cm2 was achieved at 0.25 V vs.
Ag/AgCl/3M KCl (~1.23 V vs. RHE) and the incident photon
to electron conversion efficiency (IPCE) was 23.6% at
350 nm for the electrode deposited at 450 °C.
Nanostructured nickel oxide (NiO) photoelectrodes were fabricated with controlled morphology and ... more Nanostructured nickel oxide (NiO) photoelectrodes were fabricated with controlled morphology and texture using single-step aerosol-assisted chemical vapour deposition (AACVD). The durable one-step film fabrication process resulted in highly crystalline columnar structure. Texture controlled films were also fabricated from granular to crystalline columnar morphology by controlling the deposition temperature. The thin film electrodes are highly reproducible and possess an optical bandgap of ∼3.7 eV and exhibit cathodic photocurrent.
Nanostructured α-Fe2O3 thin film electrodes were deposited by aerosol-assisted chemical vapour de... more Nanostructured α-Fe2O3 thin film electrodes were deposited
by aerosol-assisted chemical vapour deposition (AACVD) for
photoelectrochemical (PEC) water splitting on conducting
glass substrates using 0.1 M methanolic solution of Fe(acac)3.
The XRD analysis confirmed that the films are highly crystalline
α-Fe2O3 and free from other iron oxide phases. The
highly reproducible electrodes have an optical bandgap of
~2.15 eV and exhibit anodic photocurrent. The current–
voltage characterization of the electrodes reveals that the photocurrent
density strongly depended on the film morphology (SEM) analysis showed a change in the surface morphology
with the change in deposition temperature. The films deposited
at 450 °C have nanoporous structures which provide a
maximum electrode/electrolyte interface. The maximum photocurrent
density of 455 μA/cm2 was achieved at 0.25 V vs.
Ag/AgCl/3M KCl (~1.23 V vs. RHE) and the incident photon
to electron conversion efficiency (IPCE) was 23.6% at
350 nm for the electrode deposited at 450 °C.