OPTICAL-DETECTION OF ELECTRON-TRANSPORT IN THIN-FILMS OF PRUSSIAN BLUE

Authors
OCHS S GRABNER EW MOHLER E
Citation
S. Ochs et al., OPTICAL-DETECTION OF ELECTRON-TRANSPORT IN THIN-FILMS OF PRUSSIAN BLUE, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(5), 1996, pp. 594-598
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
100
Issue
5
Year of publication
1996
Pages
594 - 598
Database
ISI
SICI code
0005-9021(1996)100:5<594:OOEITO>2.0.ZU;2-T
Abstract
Potassium-iron(III)-hexacyanoferrate(II) (Prussian blue) is deposited electrochemically as a thin film (thickness: 300 nm) on a Pt-disk subs trate electrode. The relative change in optical reflectivity of this e lectrode is detected time-resolved upon galvanostatic reduction of Pru ssian blue to Everitt's salt and subsequent reoxidation. Considering d ifferent transport properties of electrons and cations within the film , the experimental result is fitted by numerical modelling. The specif ic diffusion coefficient for electrons is deduced as 5 . 10(-11) cm(2) /s.