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Proceedings Paper

QD co-sensitized and nitrogen doped TiO[sub]2[/sub] nanocomposite for photoelectrochemical hydrogen generation
Author(s): Jennifer Hensel; Max Canin; Jin Z. Zhang
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Paper Abstract

Metal oxides are promising for solar energy conversion applications since they are less expensive and easier to produce than conventional single crystal silicon. In this paper we focused on CdSe and CdS quantum dot (QD) co-sensitized and nitrogen doped TiO2 (N:TiO2) nanocomposite photoanodes for photoelectrochemical (PEC) water splitting for hydrogen generation. PEC, UV-vis and scanning electron microscopy (SEM) characterizations of the nanostructured films were carried out. The QD co-sensitized and N-doped TiO2 photoanodes exhibits increased photocurrent compared to cosensitized TiO2 without N-doping This is tentatively attributed to enhanced hole transport by oxygen vacancy states that are increased upon nitrogen doping. The enhanced hole transport facilitates overall charge transfer and transport and thereby results in improved photocurrent.

Paper Details

Date Published: 24 August 2010
PDF: 8 pages
Proc. SPIE 7770, Solar Hydrogen and Nanotechnology V, 777012 (24 August 2010); doi: 10.1117/12.859472
Show Author Affiliations
Jennifer Hensel, Univ. of California, Santa Cruz (United States)
Max Canin, Univ. of California, Santa Cruz (United States)
Jin Z. Zhang, Univ. of California, Santa Cruz (United States)

Published in SPIE Proceedings Vol. 7770:
Solar Hydrogen and Nanotechnology V
Hicham Idriss; Heli Wang, Editor(s)

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