کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
26936 | 43988 | 2014 | 7 صفحه PDF | دانلود رایگان |
• Ir dye sensitised TiO2 layers on FTO encapsulated with polyallylamine.
• Polyallylamine deposited via plasma-enhanced chemical vapour deposition.
• 4-Fold enhancement of photoefficiency by polyallylamine coating.
• Optimum coating thickness between 15 and 50 nm.
A polyallylamine coating was applied as a protective encapsulation to iridium dye sensitised TiO2 catalyst layers by a plasma-enhanced chemical vapour deposition process. A significant enhancement of the incident-photon-to-current efficiencies of the polymer-confined dye/catalyst assembly was observed, with a strong dependence on the nominal thickness of the polymer-coating. An optimum thickness of the polyallylamine coating between 15 and 50 nm was obtained with regard to photoefficiency of the polymer-coated dye/TiO2 catalyst in a neutral electrolyte. Results are discussed in terms of porosity and electrolyte permeability of the plasma polymer layer.
Figure optionsDownload as PowerPoint slide
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 290, 15 September 2014, Pages 31–37