Influence of adding carbon nanotubes on photoelectric conversion properties of dye-doped titania gel

Influence of adding carbon nanotubes on photoelectric conversion properties of dye-doped titania gel Multiwalled carbon nanotubes (MWCNTs) were incorporated into amorphous dye-doped titania gel by the sol–gel method at room temperature. The working electrodes were prepared by coating the ITO glass with the sol–gel titania precursor containing the dye and MWCNTs. The photoelectric conversion properties of the electrodes were examined by simple spectroscopic and electric measurements. The photocurrent spectrum originated from the absorption of the dye. The short circuit photocurrent was enhanced by adding a small amount of MWCNTs evenly to the amorphous dye-doped titania gel. The open circuit voltage was due to the semiconducting characteristics property of the titania gel. The experimental results indicated the electron transport from the dye excited states to the MWCNTs through the titania gel. The MWCNTs functioned as bridges between the titania and ITO. Steam treatment of the titania gel electrodes significantly increased the photoelectric performance due to crystallization of the titania and enhancement of the dye–titania interaction forming the chelate complex on the titania particle surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Influence of adding carbon nanotubes on photoelectric conversion properties of dye-doped titania gel

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Publisher
Springer Netherlands
Copyright
Copyright © 2012 by Springer Science+Business Media B.V.
Subject
Chemistry; Physical Chemistry; Inorganic Chemistry; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-012-0509-x
Publisher site
See Article on Publisher Site

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