Photoelectrochemical behavior of thin CdSe and coupled TiO[sub 2]/CdSe semiconductor films
Journal Article
·
· Journal of Physical Chemistry; (United States)
- Univ. of Notre Dame, IN (United States)
Photoelectrochemical effects at CdSe thin film electrodes (thickness 30-200 [angstrom]) have been investigated by monitoring open-circuit voltage and short-circuit current at varying film thicknesses and incident light intensities. Unlike the situation in conventional photoelectrochemical cells that employ single-crystal or polycrystalline semiconductors, the charge separation in thin CdSe films is not controlled by the space charge layer at the semiconductor-electrolyte interface, but it is controlled by the differing rates of electron and hole transfer into the solution. Quick decay of the photocurrent, even in the presence of a redox couple such as [Fe(CN)[sub 6]][sup 3[minus]/4[minus]], suggests high degree of charge recombination within the thin CdSe film. It is possible to improve the photocurrent stability of a thin CdSe film by coupling it with a TiO[sub 2] particulate film. The improved charge separation in the coupled semiconductor system has a beneficial effect in improving the photocurrent stability of thin semiconductor films. 22 refs., 8 figs., 1 tab.
- OSTI ID:
- 5536519
- Journal Information:
- Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:41; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fabrication of CdSe nanoparticles sensitized TiO2 nanotube arrays via pulse electrodeposition for photoelectrochemical application
Revealing the mysteries of nanocrystalline semiconductor thin film based photoelectrochemical solar cells
Improved efficiency of CdSe photoanodes by photoelectrochemical etching
Journal Article
·
Mon Oct 15 00:00:00 EDT 2018
· Materials Research Bulletin
·
OSTI ID:22805229
Revealing the mysteries of nanocrystalline semiconductor thin film based photoelectrochemical solar cells
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:370813
Improved efficiency of CdSe photoanodes by photoelectrochemical etching
Journal Article
·
Fri Aug 15 00:00:00 EDT 1980
· Appl. Phys. Lett.; (United States)
·
OSTI ID:5321359
Related Subjects
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360606 -- Other Materials-- Physical Properties-- (1992-)
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CURRENTS
ELECTRIC CURRENTS
ELECTROCHEMICAL CELLS
ELECTRODES
EQUIPMENT
EVALUATION
FILMS
INORGANIC PHOSPHORS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
PHOTOCURRENTS
PHOTOELECTROCHEMICAL CELLS
SEMICONDUCTOR MATERIALS
SOLAR EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360606 -- Other Materials-- Physical Properties-- (1992-)
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CURRENTS
ELECTRIC CURRENTS
ELECTROCHEMICAL CELLS
ELECTRODES
EQUIPMENT
EVALUATION
FILMS
INORGANIC PHOSPHORS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
PHOTOCURRENTS
PHOTOELECTROCHEMICAL CELLS
SEMICONDUCTOR MATERIALS
SOLAR EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS