Porous Zn-doped TiO<inf>2</inf> nanowall photoanode: Effect of Zn<sup>2+</sup> concentration on the dye-sensitized solar cell performance

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Abstract

We report the study of the utilization of a new synthesized-photoactive materials of Zn-doped TiO<inf>2</inf> nanowall (ZTNW) in a dye-sensitized solar cell (DSSC) and the study of the effect of Zn<sup>2+</sup> concentration in the ZTNW on the DSSC performance. ZTNW was prepared directly on the ITO substrate using a liquid phase deposition (LPD) method in an aqueous solution containing TiO<inf>2</inf> and Zn precursors. The effect of Zn<sup>2+</sup> dopants on the performance of DSSC was studied by preparing the ZTNW with several concentrations of Zn<sup>2+</sup>, namely from 10.0 to 40.0 mM. It was found that the performance of DSSC with a structure of ITO/ZTNW/N719/Electrolyte/Pt increases with the increasing of Zn<sup>2+</sup> concentration and optimum at 24.0 mM. Typical power conversion efficiency as high as 1.98% was obtained from the optimum ZTNW sample. The role of Zn<sup>2+</sup> concentration in the device performance will be discussed and examined using electrochemical-impedance spectroscopy method.

Original languageEnglish
Pages (from-to)835-842
Number of pages8
JournalApplied Surface Science
Volume353
DOIs
Publication statusPublished - 30 Oct 2015

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Electrochemical impedance spectroscopy
Electrolytes
Conversion efficiency
Doping (additives)
Dye-sensitized solar cells
Liquids
Substrates

Keywords

  • DSSCs
  • Nanowall
  • Photoactivity
  • Porous
  • Zn-doped TiO<inf>2</inf>

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

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title = "Porous Zn-doped TiO2 nanowall photoanode: Effect of Zn2+ concentration on the dye-sensitized solar cell performance",
abstract = "We report the study of the utilization of a new synthesized-photoactive materials of Zn-doped TiO2 nanowall (ZTNW) in a dye-sensitized solar cell (DSSC) and the study of the effect of Zn2+ concentration in the ZTNW on the DSSC performance. ZTNW was prepared directly on the ITO substrate using a liquid phase deposition (LPD) method in an aqueous solution containing TiO2 and Zn precursors. The effect of Zn2+ dopants on the performance of DSSC was studied by preparing the ZTNW with several concentrations of Zn2+, namely from 10.0 to 40.0 mM. It was found that the performance of DSSC with a structure of ITO/ZTNW/N719/Electrolyte/Pt increases with the increasing of Zn2+ concentration and optimum at 24.0 mM. Typical power conversion efficiency as high as 1.98{\%} was obtained from the optimum ZTNW sample. The role of Zn2+ concentration in the device performance will be discussed and examined using electrochemical-impedance spectroscopy method.",
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author = "Saad, {Siti Khatijah Md} and Akrajas, {Ali Umar} and {Abd Rahman}, {Mohd Yusri} and {Mat Salleh}, Muhamad",
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AU - Saad, Siti Khatijah Md

AU - Akrajas, Ali Umar

AU - Abd Rahman, Mohd Yusri

AU - Mat Salleh, Muhamad

PY - 2015/10/30

Y1 - 2015/10/30

N2 - We report the study of the utilization of a new synthesized-photoactive materials of Zn-doped TiO2 nanowall (ZTNW) in a dye-sensitized solar cell (DSSC) and the study of the effect of Zn2+ concentration in the ZTNW on the DSSC performance. ZTNW was prepared directly on the ITO substrate using a liquid phase deposition (LPD) method in an aqueous solution containing TiO2 and Zn precursors. The effect of Zn2+ dopants on the performance of DSSC was studied by preparing the ZTNW with several concentrations of Zn2+, namely from 10.0 to 40.0 mM. It was found that the performance of DSSC with a structure of ITO/ZTNW/N719/Electrolyte/Pt increases with the increasing of Zn2+ concentration and optimum at 24.0 mM. Typical power conversion efficiency as high as 1.98% was obtained from the optimum ZTNW sample. The role of Zn2+ concentration in the device performance will be discussed and examined using electrochemical-impedance spectroscopy method.

AB - We report the study of the utilization of a new synthesized-photoactive materials of Zn-doped TiO2 nanowall (ZTNW) in a dye-sensitized solar cell (DSSC) and the study of the effect of Zn2+ concentration in the ZTNW on the DSSC performance. ZTNW was prepared directly on the ITO substrate using a liquid phase deposition (LPD) method in an aqueous solution containing TiO2 and Zn precursors. The effect of Zn2+ dopants on the performance of DSSC was studied by preparing the ZTNW with several concentrations of Zn2+, namely from 10.0 to 40.0 mM. It was found that the performance of DSSC with a structure of ITO/ZTNW/N719/Electrolyte/Pt increases with the increasing of Zn2+ concentration and optimum at 24.0 mM. Typical power conversion efficiency as high as 1.98% was obtained from the optimum ZTNW sample. The role of Zn2+ concentration in the device performance will be discussed and examined using electrochemical-impedance spectroscopy method.

KW - DSSCs

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KW - Photoactivity

KW - Porous

KW - Zn-doped TiO<inf>2</inf>

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