n-type Si-based photoelectrochemical cell: new liquid junction photocell using a nonaqueous ferricenium/ferrocene electrolyte
Journal Article
·
· Proc. Natl. Acad. Sci. U.S.A.; (United States)
n-Type Si has been shown to serve as a stable photoanode in a cell for the conversion of light to electricity. The other components of the cells are a Pt cathode and an electrolyte consisting of an ethanol solution of (n-Bu/sub 4/N)ClO/sub 4/ with a redox couple of ferricenium/ferrocene. Data from a two-compartment cell show that ferrocene is oxidized to ferricenium with 100/sup + -/ 2% current efficiency at the Si photoanode. Furthermore, prolonged irradiation of the Si in a one-compartment cell yields constant photocurrent and output characteristics. The maximum open-circuit photopotential is approx. 700 mV, and the short-circuit quantum yield for electron flow at low light intensity exceeds 0.5. Conversion of monochromatic 632.8-nm light to electricity with approx. 2% power efficiency at an output voltage of approx. 200 mV has been sustained. These results represent a stable n-type Si-based photoelectrochemical cell. 48 references.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- OSTI ID:
- 6371801
- Journal Information:
- Proc. Natl. Acad. Sci. U.S.A.; (United States), Journal Name: Proc. Natl. Acad. Sci. U.S.A.; (United States) Vol. 74:10; ISSN PNASA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ATOMIC IONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DESIGN
DIENES
EFFICIENCY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELEMENTS
FERROCENE
HYDROCARBONS
IONS
IRON COMPLEXES
IRON IONS
METALS
N-TYPE CONDUCTORS
ORGANIC COMPOUNDS
PERFORMANCE
PHOTOCHEMISTRY
PHOTOELECTROCHEMICAL CELLS
PHOTOGALVANIC CELLS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
POLYENES
REDOX REACTIONS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
STABILITY
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
ATOMIC IONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
DESIGN
DIENES
EFFICIENCY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELEMENTS
FERROCENE
HYDROCARBONS
IONS
IRON COMPLEXES
IRON IONS
METALS
N-TYPE CONDUCTORS
ORGANIC COMPOUNDS
PERFORMANCE
PHOTOCHEMISTRY
PHOTOELECTROCHEMICAL CELLS
PHOTOGALVANIC CELLS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
POLYENES
REDOX REACTIONS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
STABILITY
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS