Novel Sugar Apple-Shaped SnO2 Microspheres with Light Scattering Effect in Dye-Sensitized Solar Cell Application

Murugesan Tarini, Natarajan Prakash, I. K. Mohamed Mathar Sahib, Yasuhiro Hayakawa

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Novel sugar apple-shaped SnO2 microspheres with no additives were prepared by facile hydrothermal method and morphological modification was achieved by adding urea as an additive agent at 160 °C. Photoanode materials were characterized using X-ray diffraction, scanning electron microscope, transmission electron microscope, Raman analysis, Fourier transform infrared spectrum, diffuse reflectance spectroscopy, and electrochemical impedance spectroscopy techniques. Sugar apple SnO2 microspheres and urea-assisted SnO2 microspheres had rutile crystalline phase with a diameter of 2-3 μm and optical studies showed that the light scattering was observed at a wavelength of 400-800 nm. The novel sugar apple morphology changed into SnO 2 microspheres composed of nanoparticles with an addition of 0.3 M urea, that is, from pyramidal crystal facets (210 nm) to nanoparticles (22 nm). Dye-sensitized solar cells photoanode film was prepared by doctor blade technique which was dipped in N719 dye. Obtained SnO2 microspheres were also used as a scattering layer on top of P25 film, and the efficiencies were compared. From I-V curve, the high efficiency of η = 2.76% at a recombination rate of 22.81 ms was obtained for P25/sugar apple SnO2 microspheres which was because of high light scattering effect of the crystal and the combination of P25.

Original languageEnglish
Article number7931551
Pages (from-to)1050-1057
Number of pages8
JournalIEEE Journal of Photovoltaics
Volume7
Issue number4
DOIs
StatePublished - 1 Jul 2017
Externally publishedYes

Keywords

  • Dye-sensitized solar cells (DSSCs)
  • SnO2 microspheres
  • photovoltaic conversion efficiency
  • scattering layer
  • urea as additive

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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