Enhanced energy and quantum efficiencies of a nanocrystalline photoelectrochemical cell sensitized with a donor-acceptor dyad derived from fluorescein

Shigeki Hattori, Taku Hasobe, Kei Ohkubo, Yasuteru Urano, Naoki Umezawa, Tetsuo Nagano, Yuji Wada, Shozo Yanagida, Shunichi Fukuzumi

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The dye-sensitized photovoltaic cells were prepared by using donor-acceptor dyads derived from fluorescein. The photovoltaic measurements were performed using a standard two-electrode system consisting of a working electrode and a Pt sputtered electrode in air-saturated methoxyacetonitrile containing 0.5 M iodide and 0.05 M I2. The xanthene dye-sensitized photovoltaic cells of the charge-separation type exhibit significant enhancement in the photoelectrochemical performance as compared with those of fluorescein without the charge-separation unit. The overall power conversion efficiency (ν = 1.6%) has been attained by using a fluorescein derivative composed of an electron donor (diphenylanthracene) unit and an acceptor unit (difluoroxanthene), assembled on a ZnO-SnO2 composite film as an oxide semiconductor.

Original languageEnglish
Pages (from-to)15200-15205
Number of pages6
JournalJournal of Physical Chemistry B
Volume108
Issue number39
DOIs
Publication statusPublished - 2004 Sep 30

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Photoelectrochemical cells
Fluorescein
Quantum efficiency
Energy efficiency
quantum efficiency
Photovoltaic cells
photovoltaic cells
polarization (charge separation)
Electrodes
electrodes
Coloring Agents
Xanthenes
Dyes
dyes
cells
Iodides
Composite films
iodides
Conversion efficiency
energy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Enhanced energy and quantum efficiencies of a nanocrystalline photoelectrochemical cell sensitized with a donor-acceptor dyad derived from fluorescein. / Hattori, Shigeki; Hasobe, Taku; Ohkubo, Kei; Urano, Yasuteru; Umezawa, Naoki; Nagano, Tetsuo; Wada, Yuji; Yanagida, Shozo; Fukuzumi, Shunichi.

In: Journal of Physical Chemistry B, Vol. 108, No. 39, 30.09.2004, p. 15200-15205.

Research output: Contribution to journalArticle

Hattori, Shigeki ; Hasobe, Taku ; Ohkubo, Kei ; Urano, Yasuteru ; Umezawa, Naoki ; Nagano, Tetsuo ; Wada, Yuji ; Yanagida, Shozo ; Fukuzumi, Shunichi. / Enhanced energy and quantum efficiencies of a nanocrystalline photoelectrochemical cell sensitized with a donor-acceptor dyad derived from fluorescein. In: Journal of Physical Chemistry B. 2004 ; Vol. 108, No. 39. pp. 15200-15205.
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AU - Urano, Yasuteru

AU - Umezawa, Naoki

AU - Nagano, Tetsuo

AU - Wada, Yuji

AU - Yanagida, Shozo

AU - Fukuzumi, Shunichi

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