Comparative Study on the Photoanode Nanoarchitectures for Photovoltaic Application

Jin Ah Lee, Jae Yup Kim, Woong Kim, Soon Hyung Kang, Min Jae Ko

Research output: Contribution to journalArticle

Abstract

Vertically-aligned TiO2 nanotube (NT) arrays prepared by electrochemical anodization are considered promising alternatives to the conventional nanoparticle (NP)-based electrodes for photovoltaic devices. Recently, such NT arrays have been employed in dye-sensitized solar cells (DSSCs) by transferring them onto NP-based electrodes, to obtain multi-layered nanoelectrodes. Here, we comparatively evaluate the photovoltaic and photoelectrochemical properties of TiO2 NP-only electrodes and multi-layered electrodes comprising NP and NT arrays at the same thickness of 15 μm. Although the multi-layered electrodes have a smaller surface area compared to the NP-only electrodes, they show much higher transmittance. In addition, impedance studies reveal that the multi-layered electrodes have lower charge recombination with the electrolyte as well as enhanced electrolyte diffusion when applied as a photoanode in DSSCs. As a result, the multi-layered electrodes exhibit a photovoltaic conversion efficiency (η = 5.37%) comparable to that of the NP-only electrodes (η = 5.80%), despite 36.6% lower dye loading.

Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalInternational Journal of Precision Engineering and Manufacturing - Green Technology
Volume7
Issue number1
DOIs
Publication statusPublished - 2020 Jan 1

Fingerprint

Electrodes
Nanoparticles
Nanotubes
Electrolytes
Comparative study
Conversion efficiency
Coloring Agents
Dyes
Dye-sensitized solar cells

Keywords

  • Dye-sensitized solar cells
  • Electrochemical anodization
  • TiO nanotube

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Management of Technology and Innovation

Cite this

Comparative Study on the Photoanode Nanoarchitectures for Photovoltaic Application. / Lee, Jin Ah; Kim, Jae Yup; Kim, Woong; Kang, Soon Hyung; Ko, Min Jae.

In: International Journal of Precision Engineering and Manufacturing - Green Technology, Vol. 7, No. 1, 01.01.2020, p. 69-76.

Research output: Contribution to journalArticle

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