A Quasi-Solid State DSSC with 10.1% Efficiency through Molecular Design of the Charge-Separation and -Transport

Michio Suzuka, Naoki Hayashi, Takashi Sekiguchi, Kouichi Sumioka, Masakazu Takata, Noriko Hayo, Hiroki Ikeda, Kenichi Oyaizu, Hiroyuki Nishide

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Organic-based solar cells potentially offer a photovoltaic module with low production costs and low hazard risk of the components. We report organic dye-sensitized solar cells, fabricated with molecular designed indoline dyes in conjunction with highly reactive but robust nitroxide radical molecules as redox mediator in a quasi-solid gel form of the electrolyte. The cells achieve conversion efficiencies of 10.1% at 1 sun, and maintain the output performance even under interior lighting. The indoline dyes, customized by introducing long alkyl chains, specifically interact with the radical mediator to suppress a charge-recombination process at the dye interface. The radical mediator also facilitates the charge-transport with remarkably high electron self-exchange rate even in the quasi-solid state electrolyte to lead to a high fill factor.

Original languageEnglish
Article number28022
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 2016 Jun 17

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Coloring Agents
Electrolytes
Sun
Conversion efficiency
Charge transfer
Hazards
Solar cells
Lighting
Gels
Molecules
Electrons
Costs
indoline
Oxidation-Reduction
Organic solar cells
Dye-sensitized solar cells
nitroxyl

ASJC Scopus subject areas

  • General

Cite this

A Quasi-Solid State DSSC with 10.1% Efficiency through Molecular Design of the Charge-Separation and -Transport. / Suzuka, Michio; Hayashi, Naoki; Sekiguchi, Takashi; Sumioka, Kouichi; Takata, Masakazu; Hayo, Noriko; Ikeda, Hiroki; Oyaizu, Kenichi; Nishide, Hiroyuki.

In: Scientific Reports, Vol. 6, 28022, 17.06.2016.

Research output: Contribution to journalArticle

Suzuka, Michio ; Hayashi, Naoki ; Sekiguchi, Takashi ; Sumioka, Kouichi ; Takata, Masakazu ; Hayo, Noriko ; Ikeda, Hiroki ; Oyaizu, Kenichi ; Nishide, Hiroyuki. / A Quasi-Solid State DSSC with 10.1% Efficiency through Molecular Design of the Charge-Separation and -Transport. In: Scientific Reports. 2016 ; Vol. 6.
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