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

Shintaro Ueno, Shinobu Fujihara

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルElectroceramics in Japan XIII
出版社Trans Tech Publications Ltd
ページ117-120
ページ数4
ISBN(印刷版)9780878492640
DOI
出版ステータスPublished - 2010

出版物シリーズ

名前Key Engineering Materials
445
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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