Influence of sintering behavior of ZnO nanoparticles on J-V characteristics of ZnO-based dye-sensitized solar cells

Shintaro Ueno, Shinobu Fujihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Dye-sensitized solar cells (DSSCs) are one of the promising photovoltaic devices because of their lower manufacturing cost and higher energy conversion efficiency. Wide-gap, porous semiconducting metal oxides are generally used as electrode materials of DSSCs. Previously we utilized ZnO as DSSC electrodes and achieved a high conversion efficiency of 6.58% by improving the structure of ZnO films. However, open-circuit voltage (VOC), one of the factors to determine the performance of DSSCs, was still at a lower level (≈ 0.60 V) than that of common TiO2-based cells. We believe that the lower VOC is due mainly to the occurrence of recombination. In this work, we tried to enhance VOC by controlling the heating process of electrodes and suppressing the recombination for further development of ZnO-based DSSCs. As a result, we have achieved a higher VOC of 0.725 V, confirming that the sintering behavior (grain growth and/or necking of grains) influenced largely the characteristics of DSSCs.

Original languageEnglish
Title of host publicationElectroceramics in Japan XIII
PublisherTrans Tech Publications Ltd
Pages117-120
Number of pages4
ISBN (Print)9780878492640
DOIs
Publication statusPublished - 2010 Jan 1

Publication series

NameKey Engineering Materials
Volume445
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Dye-sensitized solar cells
  • Recombination
  • Sintering
  • Zinc oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Ueno, S., & Fujihara, S. (2010). Influence of sintering behavior of ZnO nanoparticles on J-V characteristics of ZnO-based dye-sensitized solar cells. In Electroceramics in Japan XIII (pp. 117-120). (Key Engineering Materials; Vol. 445). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.445.117