Light-induced redox reactions in nanocrystalline systems

Journal Article · · Chemical Reviews; (United States)

DOI:https://doi.org/10.1021/cr00033a003· OSTI ID:6455222

Hagfeldt, A; Graetzel, M ^[1]

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1. Swiss Federal Inst. of Tech., Lausanne (Switzerland). Inst. of Physical Chemistry

This review discusses salient features of interfacial electron transfer reactions in colloidal semiconductor solutions and thin films and their application for solar light energy conversion and photocatalytic water purification. This research is interdisciplinary and is situated at the limit between colloid science, and electrochemistry, and semiconductor physics. The section on colloidal semiconductors discusses material science aspects, optical properties, electronic properties, and charge carrier reactions in colloidal semiconductor solutions. The section on nanocrystalline semiconductor electrodes discusses some basic properties and preparation procedures of nanocrystalline TiO[sub 2] films, energetics and operations of the nanoporous solar cell, observations and importance of electronic states in the band gap region, photoinduced processes in nanocrystalline semiconductor electrodes, the electric field in a nanocrystalline electrode, and kinetic rate constants in the photosensitized solar cell. 156 refs.

• OSTI ID: 6455222
• Journal Information: Chemical Reviews; (United States), Journal Name: Chemical Reviews; (United States) Vol. 95:1; ISSN CHREAY; ISSN 0009-2665
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
CONVERSION
DECOMPOSITION
DIRECT ENERGY CONVERTERS
DISPERSIONS
DOCUMENT TYPES
ENERGY CONVERSION
EQUIPMENT
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOELECTRIC CELLS
PHOTOLYSIS
PHOTOVOLTAIC CELLS
REDOX REACTIONS
REVIEWS
SEMICONDUCTOR MATERIALS
SOLAR CELLS
SOLAR ENERGY CONVERSION
SOLAR EQUIPMENT
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WATER TREATMENT