Binary Indium-Zinc Oxide Photoanodes for Efficient Dye-Sensitized Solar Cells

Andreas Kunzmann, Melanie Stanzel, Wolfgang Peukert, Rubén D. Costa*, Dirk M. Guldi

*この研究の対応する著者

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The benefits of incorporating binary metal-oxide electrodes en route toward efficient dye-sensitized solar cells (DSSCs) have recently emerged. The current work aims at realizing efficient indium-doped zinc oxide based DSSCs by means of enhancing charge transport processes and reducing recombination rates. Electrochemical impedance spectroscopic assays corroborate that low amounts of indium reduce charge transport resistances and increase electron recombination resistances. The latter are in concert with a remarkable enhancement of the charge collection efficiency from 33% to 83% for devices with ZnO and In15Zn85O photoanodes, respectively. Going beyond 15 mol% of indium, an effective electron trapping increases the charge transport resistance and, in turn, dramatically reduces charge collection efficiency. Upon implementing In15Zn85O into an electron cascade photoanode architecture featuring an In15Zn85O bottom layer and a ZnO top layer, a device efficiency of 5.77% and a significantly high current density of 20.4 mA cm-2 in binary ZnO DSSCs are achieved.

本文言語English
論文番号1501075
ジャーナルAdvanced Energy Materials
6
1
DOI
出版ステータスPublished - 2016 1月 7
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)

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