Choosing the right nanoparticle size-designing novel ZnO electrode architectures for efficient dye-sensitized solar cells

Markus W. Pfau, Andreas Kunzmann, Doris Segets, Wolfgang Peukert, Gordon G. Wallace, David L. Officer, Tim Clark, Rubén D. Costa*, Dirk M. Guldi

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

A novel concept for constructing optimized ZnO-based photoanodes as integrative components of dye-sensitized solar cells (DSSCs) is realized by deploying differently sized nanoparticles, ranging from 2 to 10 nm, together with commercially available 20 nm nanoparticles. The 2 nm nanoparticles were used to construct an efficient buffer layer for transparent electrodes based on 10 nm nanoparticles, resulting in a relative increase of device efficiency from 1.8 to 3.0% for devices without and with a buffer layer, respectively. A mixture of 10 and 20 nm nanoparticles was optimized to maximize the diffuse reflection and to minimize the charge transport resistance in a light-scattering layer. This optimization resulted in a homogenous layer of more than 15 μm that provided a device efficiency of 3.3%. The buffer layer, transparent electrode, and light-scattering electrode, were then combined to give an overall efficiency of around 5%. Thus, this work demonstrates that varying the electrode architecture with nanoparticles of different diameters is a powerful strategy for improving the overall efficiency of ZnO-based DSSCs.

本文言語English
ページ(範囲)7516-7522
ページ数7
ジャーナルJournal of Materials Chemistry A
5
16
DOI
出版ステータスPublished - 2017

ASJC Scopus subject areas

  • 化学 (全般)
  • 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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