Solid state dye sensitized photoelectrochemical cell

Journal Article · Thu Nov 23 04:00:00 EST 1995 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100047a003· OSTI ID:171477

Cao, F; Oskam, G; Searson, P C ^[1]

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1. Johns Hopkins Univ., Baltimore, MD (United States)

A quasi-solid-state photoelectrochemical cell employing a dye-sensitized, nanocrystalline TiO{sub 2} electrode and a polymer gel electrolyte has been fabricated. The cells show open-circuit voltages close to 0.6 V and short-circuit currents larger than 3 mA cm{sup -2} under 30 mW cm{sup -2} white light illumination. Fill factors and open circuit voltages of the cell are comparable to those of similar cells with liquid electrolytes. Overall energy conversion efficiencies of 3-5% have been achieved. Photocurrent transients have relatively long rise time constants, indicating that electron transport in the TiO{sub 2} electrodes is controlled by a trapping process. At high light intensity the photocurrent rise is followed by a decay process due to the limitation of ion transport in the electrolyte. 7 refs., 4 figs.

• Sponsoring Organization: USDOE
• OSTI ID: 171477
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 47 Vol. 99; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
40 CHEMISTRY
DESIGN
ELECTRODES
ELECTROLYTES
FABRICATION
GELS
PHOTOCURRENTS
PHOTOELECTROCHEMICAL CELLS
PHOTOSENSITIVITY
POLYMERS
SOLAR ENERGY CONVERSION
SOLID STATE PHYSICS
TITANIUM OXIDES
USES