Titania Nanotubes Decorated with Zn-Doped Titania Nanoparticles as the Photoanode Electrode of Dye-Sensitized Solar Cells

H. Mokarami Ghartavol, A. Afshar, M. R. Mohammadi, Franklin Chau-Nan Hong, Yeau-Ren Jeng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We decorated Zn-doped TiO2-nanoparticle-based photoanodes with carbon nanotube (CNT)-derived TiO2 nanotubes (TNs) to enhance the power conversion efficiency of dye-sensitized solar cells (DSCs). X-ray photoelectron spectroscopy analysis verified that Zn ions, in the range of 0 to 1 at %, were successfully doped into the TiO2 lattice. Field-emission SEM and TEM images of the TNs, as derived from the sol–gel template-assisted route, revealed that a uniform TiO2 coating with a thickness of 60 to 120 nm was deposited on the surface of the CNT template through a noncovalent route. We observed that the cell efficiency improved from 6.80 for pure TiO2 to 7.52 for 0.75 at % Zn-doped TiO2 nanoparticles due to a reduction in charge recombination and enhancement in electron injection, as confirmed by using photoluminescence spectroscopy. Further improvements in the efficiency of up to 8.47 % were achieved by the incorporation of 5 wt % TNs into the Zn-doped TiO2 photoanodes, as a result of enhancements in electron transport and light scattering, which was verified by using diffuse reflectance spectroscopy.

Original languageEnglish
Pages (from-to)1571-1578
Number of pages8
JournalEnergy Technology
Volume5
Issue number9
DOIs
Publication statusPublished - 2017 Sep 1

Fingerprint

Nanotubes
Titanium
Nanoparticles
Electrodes
Carbon nanotubes
Electron injection
Photoluminescence spectroscopy
Field emission
Light scattering
Conversion efficiency
X ray photoelectron spectroscopy
Spectroscopy
Transmission electron microscopy
Coatings
Scanning electron microscopy
Ions
Dye-sensitized solar cells
Electron Transport

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

@article{cd4729c00afa403181932a2c34f9cc68,
title = "Titania Nanotubes Decorated with Zn-Doped Titania Nanoparticles as the Photoanode Electrode of Dye-Sensitized Solar Cells",
abstract = "We decorated Zn-doped TiO2-nanoparticle-based photoanodes with carbon nanotube (CNT)-derived TiO2 nanotubes (TNs) to enhance the power conversion efficiency of dye-sensitized solar cells (DSCs). X-ray photoelectron spectroscopy analysis verified that Zn ions, in the range of 0 to 1 at {\%}, were successfully doped into the TiO2 lattice. Field-emission SEM and TEM images of the TNs, as derived from the sol–gel template-assisted route, revealed that a uniform TiO2 coating with a thickness of 60 to 120 nm was deposited on the surface of the CNT template through a noncovalent route. We observed that the cell efficiency improved from 6.80 for pure TiO2 to 7.52 for 0.75 at {\%} Zn-doped TiO2 nanoparticles due to a reduction in charge recombination and enhancement in electron injection, as confirmed by using photoluminescence spectroscopy. Further improvements in the efficiency of up to 8.47 {\%} were achieved by the incorporation of 5 wt {\%} TNs into the Zn-doped TiO2 photoanodes, as a result of enhancements in electron transport and light scattering, which was verified by using diffuse reflectance spectroscopy.",
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Titania Nanotubes Decorated with Zn-Doped Titania Nanoparticles as the Photoanode Electrode of Dye-Sensitized Solar Cells. / Mokarami Ghartavol, H.; Afshar, A.; Mohammadi, M. R.; Hong, Franklin Chau-Nan; Jeng, Yeau-Ren.

In: Energy Technology, Vol. 5, No. 9, 01.09.2017, p. 1571-1578.

Research output: Contribution to journalArticle

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