Issue 4, 2011
From the journal:

Energy & Environmental Science

Synthesis of transparent mesoporous tungsten trioxide films with enhanced photoelectrochemical response: application to unassisted solar water splitting†

Jung Kyu Kim,‡a   Kahee Shin,‡a   Sung M. Cho,a   Tae-Woo Leeb  and  Jong Hyeok Park*a  

* Corresponding authors

a School of Chemical Engineering, and SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, Korea
E-mail: lutts@skku.edu

b Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Gyeongbuk 790-784, Korea

Abstract

Tungsten trioxide (WO3) films with a mesoporous morphology, high transparency, and monoclinic phase crystallinity were prepared using polyethyleneglycol (PEG) as a surfactant and their photoelectrochemical properties were measured. By controlling the weight ratio of the tungsten precursor to PEG, a sphere-like WO3 nanoparticle film with high transparency can be synthesized. The photocurrent responses of the films under 1 sun solar light illumination were measured. Due to the high transparency of the WO3 photoanode, it is possible to fabricate a tandem cell composed of a WO3/Pt bipolar electrode connected with a dye-sensitized solar cell. Unassisted water splitting from the tandem cell was demonstrated but the maximum current density was exhibited at around +0.4 V (vs.Pt).

Graphical abstract: Synthesis of transparent mesoporous tungsten trioxide films with enhanced photoelectrochemical response: application to unassisted solar water splitting

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Article information

DOI
https://doi.org/10.1039/C0EE00469C
Article type
Paper
Submitted
23 Sep 2010
Accepted
04 Feb 2011
First published
02 Mar 2011

Energy Environ. Sci., 2011,4, 1465-1470

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Synthesis of transparent mesoporous tungsten trioxide films with enhanced photoelectrochemical response: application to unassisted solar water splitting

J. K. Kim, K. Shin, S. M. Cho, T. Lee and J. H. Park, Energy Environ. Sci., 2011, 4, 1465 DOI: 10.1039/C0EE00469C

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