Morphological and electron transport studies in ZnO dye-sensitized solar cells incorporating multi- and single-walled carbon nanotubes

Azimah Omar, Huda Abdullah, Mohd. Ambar Yarmo, Sahbudin Shaari, Mohd. Raihan Taha

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27 Citations (Scopus)

Abstract

Dye-sensitized solar cells (DSSCs) incorporating zinc oxide (ZnO) nanostructures and carbon nanotubes (CNTs) were fabricated using a chemical bath deposition method. The nanoflake structures captured by a field-emission scanning electron microscopy analysis traced the appearance of multi-walled carbon nanotubes (MWCNTs) and single-walled carbon nanotubes (SWCNTs) in the photoanode thin film. The photovoltaic performance of the photoanode was quantified by means of an electrochemical impedance spectroscopy (EIS) unit with GAMRY-Physical Electrochemistry. The ZnO-SWCNT-based DSSC exhibited good photovoltaic performance with power conversion efficiency (η), photocurrent density (Jsc), open-circuit voltage (Voc) and fill factor (FF) of 1.31%, 15.31 mA cm-2, 0.224 V and 0.36, respectively. The EIS unit was also employed to quantify the charge transport resistance (R ct), transport resistance (Rt) and effective electron lifetime (τeff) of the DSSC. The impedance analysis of the ZnO-SWCNT-based DSSC also determined greater highly efficient electron transport due to long effective electron diffusion length than the film thickness of the photoanode.

Original languageEnglish
Article number165503
JournalJournal of Physics D: Applied Physics
Volume46
Issue number16
DOIs
Publication statusPublished - 24 Apr 2013

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Zinc Oxide
Single-walled carbon nanotubes (SWCN)
Zinc oxide
zinc oxides
solar cells
dyes
carbon nanotubes
Carbon Nanotubes
Electrochemical impedance spectroscopy
impedance
Carbon nanotubes
electrons
Electrons
Electrochemistry
Open circuit voltage
Photocurrents
electron diffusion
Field emission
Conversion efficiency
Film thickness

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

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title = "Morphological and electron transport studies in ZnO dye-sensitized solar cells incorporating multi- and single-walled carbon nanotubes",
abstract = "Dye-sensitized solar cells (DSSCs) incorporating zinc oxide (ZnO) nanostructures and carbon nanotubes (CNTs) were fabricated using a chemical bath deposition method. The nanoflake structures captured by a field-emission scanning electron microscopy analysis traced the appearance of multi-walled carbon nanotubes (MWCNTs) and single-walled carbon nanotubes (SWCNTs) in the photoanode thin film. The photovoltaic performance of the photoanode was quantified by means of an electrochemical impedance spectroscopy (EIS) unit with GAMRY-Physical Electrochemistry. The ZnO-SWCNT-based DSSC exhibited good photovoltaic performance with power conversion efficiency (η), photocurrent density (Jsc), open-circuit voltage (Voc) and fill factor (FF) of 1.31{\%}, 15.31 mA cm-2, 0.224 V and 0.36, respectively. The EIS unit was also employed to quantify the charge transport resistance (R ct), transport resistance (Rt) and effective electron lifetime (τeff) of the DSSC. The impedance analysis of the ZnO-SWCNT-based DSSC also determined greater highly efficient electron transport due to long effective electron diffusion length than the film thickness of the photoanode.",
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AU - Omar, Azimah

AU - Abdullah, Huda

AU - Yarmo, Mohd. Ambar

AU - Shaari, Sahbudin

AU - Taha, Mohd. Raihan

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