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Title: Effect of Nb-doped TiO{sub 2} on nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb for dye-sensitized solar cells

Abstract

The Nb-doped TiO{sub 2} films were deposited on glass substrate at different Nb concentrations of 0 at.%, 1 at.%, 3 at.%, 5 at.% and 7 at.%, respectively and their electrical and structural properties were investigated. Subsequently, the Nb-doped TiO{sub 2} films were deposited on top of aligned ZnO Nanorod on ITO glass substrates using spin coating technique. The nanocomposited aligned ZnO nanorod/Nb-doped TiO{sub 2} (TiO{sub 2}:Nb) were coated with different Nb concentrations of 0 at.%, 1 at.%, 3 at.%, 5 at.% and 7 at.%, respectively. The Dye-sensitized solar cells were fabricated from the nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb photoanodes and their effects on the performance of the DSSCs were investigated. From the solar simulator measurement of DSSC the solar energy conversion efficiency (η) of 5.376% under AM 1.5 was obtained for the ZnO nanorod/TiO{sub 2}:Nb-5at.%.

Authors:
;  [1];  [2]; ; ;  [1]; ;  [1];  [3]; ;  [4]
  1. NANO-ElecTronic Centre (NET), Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM),40450 Shah Alam, Selangor (Malaysia)
  2. (Malaysia)
  3. (NST), (Centre for Nano-Science and Nano-Technology), Institute of Science, Universiti Teknologi MARA - UiTM, 40450 Shah Alam, Selangor (Malaysia)
  4. Department of Biochemistry, College of Science, Bldg. 5, King Saud University (KSU) P.O: 2455 Riyadh 1145 (Saudi Arabia)
Publication Date:
OSTI Identifier:
22608613
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1733; Journal Issue: 1; Conference: IC-NET 2015: International conference on nano-electronic technology devices and materials 2015, Selangor (Malaysia), 27 Feb - 2 Mar 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CONCENTRATION RATIO; DOPED MATERIALS; DYES; EFFICIENCY; FILMS; GLASS; NANOSTRUCTURES; NIOBIUM ADDITIONS; PERFORMANCE; PHOTOANODES; SOLAR CELLS; SOLAR ENERGY; SOLAR ENERGY CONVERSION; SOLAR SIMULATORS; SPIN; SPIN-ON COATING; SUBSTRATES; TITANIUM OXIDES; ZINC OXIDES

Citation Formats

Saurdi, I., E-mail: saurdy788@gmail.com, Ishak, A., UiTM Sarawak Kampus Kota Samarahan Jalan Meranek, Sarawak, Shafura, A. K., Azhar, N. E. A., Mamat, M. H., Malek, M. F., Rusop, M., NANO-SciTech Centre, Alrokayan, A. H. Salman, and Khan, Haseeb A. Effect of Nb-doped TiO{sub 2} on nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb for dye-sensitized solar cells. United States: N. p., 2016. Web. doi:10.1063/1.4948882.
Saurdi, I., E-mail: saurdy788@gmail.com, Ishak, A., UiTM Sarawak Kampus Kota Samarahan Jalan Meranek, Sarawak, Shafura, A. K., Azhar, N. E. A., Mamat, M. H., Malek, M. F., Rusop, M., NANO-SciTech Centre, Alrokayan, A. H. Salman, & Khan, Haseeb A. Effect of Nb-doped TiO{sub 2} on nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb for dye-sensitized solar cells. United States. doi:10.1063/1.4948882.
Saurdi, I., E-mail: saurdy788@gmail.com, Ishak, A., UiTM Sarawak Kampus Kota Samarahan Jalan Meranek, Sarawak, Shafura, A. K., Azhar, N. E. A., Mamat, M. H., Malek, M. F., Rusop, M., NANO-SciTech Centre, Alrokayan, A. H. Salman, and Khan, Haseeb A. Wed . "Effect of Nb-doped TiO{sub 2} on nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb for dye-sensitized solar cells". United States. doi:10.1063/1.4948882.
@article{osti_22608613,
title = {Effect of Nb-doped TiO{sub 2} on nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb for dye-sensitized solar cells},
author = {Saurdi, I., E-mail: saurdy788@gmail.com and Ishak, A. and UiTM Sarawak Kampus Kota Samarahan Jalan Meranek, Sarawak and Shafura, A. K. and Azhar, N. E. A. and Mamat, M. H. and Malek, M. F. and Rusop, M. and NANO-SciTech Centre and Alrokayan, A. H. Salman and Khan, Haseeb A.},
abstractNote = {The Nb-doped TiO{sub 2} films were deposited on glass substrate at different Nb concentrations of 0 at.%, 1 at.%, 3 at.%, 5 at.% and 7 at.%, respectively and their electrical and structural properties were investigated. Subsequently, the Nb-doped TiO{sub 2} films were deposited on top of aligned ZnO Nanorod on ITO glass substrates using spin coating technique. The nanocomposited aligned ZnO nanorod/Nb-doped TiO{sub 2} (TiO{sub 2}:Nb) were coated with different Nb concentrations of 0 at.%, 1 at.%, 3 at.%, 5 at.% and 7 at.%, respectively. The Dye-sensitized solar cells were fabricated from the nanocomposited aligned ZnO nanorod/TiO{sub 2}:Nb photoanodes and their effects on the performance of the DSSCs were investigated. From the solar simulator measurement of DSSC the solar energy conversion efficiency (η) of 5.376% under AM 1.5 was obtained for the ZnO nanorod/TiO{sub 2}:Nb-5at.%.},
doi = {10.1063/1.4948882},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1733,
place = {United States},
year = {Wed Jul 06 00:00:00 EDT 2016},
month = {Wed Jul 06 00:00:00 EDT 2016}
}
  • The TiO{sub 2} films were deposited on glass substrate at different thicknesses with different deposition frequencies (1, 2, 3 and 4 times) using spin coating technique and their structural properties were investigated. Subsequently, the nanocomposited aligned ZnO nanorods and TiO{sub 2} were formed by deposited the TiO{sub 2} on top of aligned ZnO Nanorod on ITO-coated glass at different thicknesses using the same method of TiO{sub 2} deposited on glass substrate. The nanocomposited aligned ZnO nanorod/TiO{sub 2} were coated with different thicknesses of 900µm, 1815µm, 2710µm, 3620µm and ZnO without TiO{sub 2}. The dye-sensitized solar cells were fabricated from themore » nanocomposited aligned ZnO nanorod/TiO{sub 2} with thickness of 900µm, 1815µm, 2710µm and 3620µm and ZnO without TiO{sub 2} and their photovoltaic properties of the DSSCs were investigated. From the solar simulator measurement the solar energy conversion efficiency (η) of 2.543% under AM 1.5 was obtained for the ZnO nanorod/TiO{sub 2} photoanode-2710µm Dye-Sensitized solar cell.« less
  • High aspect ratio ZnO nanorod arrays were synthesized on fluorine-doped tin oxide glasses via a low temperature solution method. By adjusting the growth condition and adding polyethylenimine, ZnO nanorod arrays with tunable length were successfully achieved. The ZnO@TiO{sub 2} core shells structures were realized by a fast growth method of immersion into a (NH{sub 4}){sub 2}·TiF{sub 6} solution. Transmission electron microscopy, X-ray Diffraction and energy dispersive X-ray measurements all confirmed the existence of a titania shell uniformly covering the ZnO nanorod's surface. Results of solar cell testing showed that addition of a TiO{sub 2} shell to the ZnO nanorod significantlymore » increased short circuit current (from 4.2 to 5.2 mA/cm{sup 2}), open circuit voltage (from 0.6 V to 0.8 V) and fill factor (from 42.8% to 73.02%). The overall cell efficiency jumped from 1.1% for bare ZnO nanorod to 3.03% for a ZnO@TiO{sub 2} core shell structured solar cell with a 18–22 nm shell thickness, a nearly threefold increase. - Graphical abstract: The synthesis process of coating TiO{sub 2} shell onto ZnO nanorod core is shown schematically. A thin, uniform, and conformal shell had been grown on the surface of the ZnO core after immersing in the (NH{sub 4}){sub 2}·TiF{sub 6} solution for 5–15 min. - Highlights: • ZnO@TiO{sub 2} core shell nanorod has been grown on FTO substrate using low temperature solution method. • TEM, XRD, EDX results confirmed the existing of titana shell, uniformly covered rod's surface. • TiO{sub 2} shell suppressed recombination, demonstrated significant enhancement in cell's efficiency. • Core shell DSSC's efficiency achieved as high as 3.03%, 3 times higher than that of ZnO nanorods.« less
  • The rutile TiO{sub 2} nanorods (RTNs) with the length of 40-130 nm and diameters approximately 8-15 nm, containing some 300-500 nm sized RTN aggregates and 6% of anatase TiO{sub 2} nanocrystals, were prepared by surfactant-assisted hydrothermal method. The dye-sensitized solar cell (DSC) based on the RTNs exhibited power conversion efficiency of 6.03%. As compared to P25 TiO{sub 2} based DSC, RTNs based DSC shows improved light-harvesting and Brunauer-Emmett-Teller surface area, leading to an increase in short-circuit current (J{sub sc}) by 40.6%.