Electrochromic and photoelectrochromic behavior of thin WO[sub 3] films prepared from quantum size colloidal particles
Journal Article
·
· Langmuir; (United States)
- Univ. of Notre Dame, IN (United States) Universite du Quebec, Trois Rivieres, Quebec (Canada)
- Univ. of Notre Dame, IN (United States)
Thin films of WO[sub 3] are cast from quantum size colloids onto an optically transparent electrode. These thin particulate films are found to exhibit reversible electrochromic and photoelectrochromic effects. A blue coloration of the WO[sub 3] particulate film is seen when electrons are injected into the conduction band of WO[sub 3] by electrochemical or UV-excitation methods. The onset potential of the electrochromic effect is dependent on the pH and corresponds to the flat band potential of WO[sub 3]. Spectroelectrochemical and microwave absorption experiments suggest that trapped electrons are the major species responsible for the blue coloration of the WO[sub 3] particulate film. 34 refs., 9 figs.
- OSTI ID:
- 5119706
- Journal Information:
- Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 10:1; ISSN LANGD5; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360606* -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
400500 -- Photochemistry
CHALCOGENIDES
COLLOIDS
DISPERSIONS
ELECTRO-OPTICAL EFFECTS
ELECTROCHROMISM
ELECTRODES
ELECTROMAGNETIC RADIATION
FILMS
MATERIALS
MICROWAVE RADIATION
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PHOTOELECTRIC EFFECT
PHOTOELECTROMAGNETIC EFFECTS
PHYSICAL PROPERTIES
RADIATIONS
REFRACTORY METAL COMPOUNDS
SEMICONDUCTOR MATERIALS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
VOLTAMETRY
360601 -- Other Materials-- Preparation & Manufacture
360606* -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
400500 -- Photochemistry
CHALCOGENIDES
COLLOIDS
DISPERSIONS
ELECTRO-OPTICAL EFFECTS
ELECTROCHROMISM
ELECTRODES
ELECTROMAGNETIC RADIATION
FILMS
MATERIALS
MICROWAVE RADIATION
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PHOTOELECTRIC EFFECT
PHOTOELECTROMAGNETIC EFFECTS
PHYSICAL PROPERTIES
RADIATIONS
REFRACTORY METAL COMPOUNDS
SEMICONDUCTOR MATERIALS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
VOLTAMETRY