Photoelectrochemical studies on aqueous suspensions of 3-dodecyl 2-5 di-thionyl pyrrole/metal oxide photoactive interfaces

Colloidal ZnO, Fe2O3 and Cu2O solutions were used to explore photonic activities at metal oxides/organic semiconductors interfaces. Fluorescence spectroscopic and dynamic electrochemical techniques were performed on colloidal metal oxides articles modified with 3‐dodecyl 2–5 di‐thionyl pyrrole (3‐DO...

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Bibliographic Details
Published in:Surface and interface analysis 2011-12, Vol.43 (12), p.1527-1531
Main Author: Kasem, Kasem K.
Format: Article
Language:English
Subjects:
3-DODTh-Py
colloidal
Colloids
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
COPPER OXIDE
Cross-disciplinary physics: materials science
rheology
CUPROUS OXIDE
Electron affinity
Electronegativity
ELECTRONIC STRUCTURE
Exact sciences and technology
interface
INTERFACES
Metal oxides
MICA
MONOMERS
nanoparticles
OXIDES
photoelectrochemistry
Photonics
Physics
Pyrroles
SEMICONDUCTORS
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Summary:Colloidal ZnO, Fe2O3 and Cu2O solutions were used to explore photonic activities at metal oxides/organic semiconductors interfaces. Fluorescence spectroscopic and dynamic electrochemical techniques were performed on colloidal metal oxides articles modified with 3‐dodecyl 2–5 di‐thionyl pyrrole (3‐DODTh‐Py) to investigate the quantum absorbance efficiency at this inorganic/organic interface (IOI). The IOI assemblies were p‐n junction‐type interfaces, where 3‐DODTh‐Py) functions as electron donor. Results were interpreted using the optical and electrochemical parameters of the organic monomer such as IP (ionization potential), EA (electron affinity), and Eg (Energy band gap), and the barrier height at the IOI interface. One of the driving forces for great absorption at IOI was the great difference in electronegativity between inorganic and organic interface. Copyright © 2011 John Wiley & Sons, Ltd.
ISSN:0142-2421
1096-9918
1096-9918
DOI:10.1002/sia.3747