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Enhanced photoresponses of polypyrrole on surface modified TiO2 with self-assembled monolayers

Paper ID Volume ID Publish Year Pages File Format Full-Text
28601 44081 2006 6 PDF Available
Title
Enhanced photoresponses of polypyrrole on surface modified TiO2 with self-assembled monolayers
Abstract

Photodevices comprising covalently grafted polypyrrole films on surface modified mesoporous TiO2 substrates via 3-(trimethoxysilyl) propyl methacrylate were fabricated and tested their performances with a counter electrode having a thin layer of gold. Significant photoresponses were observed with the addition of an ionic liquid, l-ethyl-3-methylimidazolium bis-trifluoromethylsulfonyl amide containing 0.2 M LiTf2N and painting a layer of graphite on the surface of PPY. The cell TiO2/PPY-C/Au cell delivered a short circuit current of ∼600 μA cm−2 with an open circuit voltage of ∼500 mV under the irradiation of 100 mW cm−2 (AM 1.5). The average corresponding fill factors and the efficiencies were 0.51 and ∼0.2%, respectively.

Keywords
TiO2; Polypyrrole; Solid-state photocells; Hole transport materials
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Enhanced photoresponses of polypyrrole on surface modified TiO2 with self-assembled monolayers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 184, Issues 1–2, 15 November 2006, Pages 234–239
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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