Photoelectrolysis of water in cells with SrTiO/sub 3/ anodes

Journal Article · Sun Feb 29 23:00:00 EST 1976 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.88723· OSTI ID:7367195

Mavroides, J G; Kafalas, J A; Kolesar, D F

The photoelectrolysis of water in cells with SrTiO/sub 3/ anodes has been confirmed. The maximum external quantum efficiency at zero bias voltage is 10% (at h..nu..=3.8 eV), about an order of magnitude higher than the maximum value obtained with anodes of TiO/sub 2/, the only other material so far known to catalyze photoelectrolysis. In agreement with the energy-level model proposed previously, the efficiency is increased because the band bending at the anode surface is about 0.2 eV larger for SrTiO/sub 3/ than for TiO/sub 2/, as a result of the smaller electron affinity of SrTiO/sub 3/. (AIP)

• Research Organization: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02173
• OSTI ID: 7367195
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 28:5; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080101* -- Hydrogen-- Production-- Electrolysis
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ALKALINE EARTH METAL COMPOUNDS
ANODES
CATALYSIS
CATALYSTS
CHEMISTRY
CONVERSION
EFFICIENCY
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYSIS
ENERGY CONVERSION
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
LYSIS
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
PHOTOELECTROLYSIS
SOLAR ENERGY CONVERSION
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WATER