Oriented Ti doped hematite thin film as active photoanodes synthesized by facile APCVD

Zhang, Peng, Kleiman-Shwarsctein, Alan, Hu, Yong-Sheng, Lefton, Jarrod, Sharma, Sudhanshu, Forman, Arnold J. and McFarland, Eric (2011) Oriented Ti doped hematite thin film as active photoanodes synthesized by facile APCVD. Energy and Environmental Science, 4 3: 1020-1028. doi:10.1039/c0ee00656d


Author Zhang, Peng
Kleiman-Shwarsctein, Alan
Hu, Yong-Sheng
Lefton, Jarrod
Sharma, Sudhanshu
Forman, Arnold J.
McFarland, Eric
Title Oriented Ti doped hematite thin film as active photoanodes synthesized by facile APCVD
Journal name Energy and Environmental Science   Check publisher's open access policy
ISSN 1754-5692
1754-5706
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.1039/c0ee00656d
Open Access Status Not Open Access
Volume 4
Issue 3
Start page 1020
End page 1028
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher R S C Publications
Language eng
Abstract To improve the optoelectronic properties of iron oxide as a photoelectrode, hematite (α-Fe2O3) thin films were doped with titanium using atmospheric pressure chemical vapor deposition (APCVD) for synthesis. The films were prepared by pyrolysis of Fe(CO)5 and TiCl4 precursors on fluorine-doped tin oxide (FTO) substrates and found to have a polycrystalline morphology with faceted particulates ∼20 to 50 nm in size with a preferred crystallographic growth along the [110] direction. The performance of the photoanodes was measured as a function of titanium concentration. A maximum efficiency was observed at ∼0.8 atom% Ti in hematite. The Incident Photon-to-current Conversion Efficiency (IPCE) to hydrogen was measured in alkaline electrolyte. Under an applied bias of 0.6 V vs. Ag/AgCl at 400 nm the IPCE for water splitting in alkaline solution was found to be 27.2%, the highest efficiency reported for Ti doped hematite photoanodes. The IPCEs of the photoanode thin films at lower applied bias were further increased by calcination at 500 °C and by use of glucose as an anolyte.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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