Dual Functional Polymer Interlayer for Facilitating Ion Transport and Reducing Charge Recombination in Dye-Sensitized Solar Cells

Ying Chiao Wang, Shao Sian Li, Cheng Yen Wen, Liang Yih Chen, Kuo Chuan Ho, Chun Wei Chen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Dye-sensitized solar cells (DSSCs) present low-cost alternatives to conventional wafer-based inorganic solar cells and have remarkable power conversion efficiency. To further enhance performance, we propose a new DSSC architecture with a novel dual-functional polymer interlayer that prevents charge recombination and facilitates ionic conduction, as well as maintaining dye loading and regeneration. Poly(vinylidene fluoride-trifluoroethylene) (p(VDF-TrFE)) was coated on the outside of a dye-sensitized TiO2 photoanode by a simple solution process that did not sacrifice the amount of adsorbed dye molecules in the DSSC device. Light-intensity-modulated photocurrent and photovoltage spectroscopy revealed that the proposed p(VDF-TrFE)-coated anode yielded longer electron lifetime and improved the injection of photogenerated electrons into TiO2, thereby reducing the electron transport time. Comparative cyclic voltammetry and UV-visible absorption spectroscopy based on a ferrocene-ferrocenium external standard material demonstrated that p(VDF-TrFE) enhanced the power conversion efficiency from 7.67% to 9.11%. This dual functional p(VDF-TrFE) interlayer is a promising candidate for improving the performance of DSSCs and can also be employed in other electrochemical devices.

Original languageEnglish
Pages (from-to)33666-33672
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number49
DOIs
Publication statusPublished - Dec 14 2016
Externally publishedYes

Fingerprint

Functional polymers
Ions
Coloring Agents
Dyes
Conversion efficiency
Ionic conduction
Electrons
Photocurrents
Absorption spectroscopy
Cyclic voltammetry
Solar cells
Anodes
Spectroscopy
Molecules
polyvinylidene fluoride
trifluoroethene
Dye-sensitized solar cells
Costs

Keywords

  • dye-sensitized solar cell
  • ionic conductivity
  • p(VDF-TrFE) copolymer
  • recombination
  • solution process

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Dual Functional Polymer Interlayer for Facilitating Ion Transport and Reducing Charge Recombination in Dye-Sensitized Solar Cells. / Wang, Ying Chiao; Li, Shao Sian; Wen, Cheng Yen; Chen, Liang Yih; Ho, Kuo Chuan; Chen, Chun Wei.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 49, 14.12.2016, p. 33666-33672.

Research output: Contribution to journalArticle

Wang, Ying Chiao ; Li, Shao Sian ; Wen, Cheng Yen ; Chen, Liang Yih ; Ho, Kuo Chuan ; Chen, Chun Wei. / Dual Functional Polymer Interlayer for Facilitating Ion Transport and Reducing Charge Recombination in Dye-Sensitized Solar Cells. In: ACS Applied Materials and Interfaces. 2016 ; Vol. 8, No. 49. pp. 33666-33672.
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