Aerosol pyrolysis (AP) was used for preparing semiconducting films of tungsten trioxide using peroxotungstic acid as a precursor. The films were characterized by SEM, XRD, and by their photoelectrochemical response. Porous, polycrystalline (monoclinic) films of thickness up to 3 mu m were prepared. An incident photon to current efficiency (IPCE) of 0.55 at 365 nm was obtained for films of 1 mu m thickness on conducting F:SnO2/glass substrates under depiction conditions, in junctions with aqueous electrolytes. The spectral (photocurrent) response extended into the visible region (up to 470 nm) which is of importance for solar applications like photocatalysis. (C) 2007 Elsevier Ltd. All rights reserved.
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CSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South Africa
Univ Pretoria, Sch Phys, ZA-0002 Pretoria, South AfricaCSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South Africa
Govender, M.
Mwakikunga, B. W.
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CSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South AfricaCSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South Africa
Mwakikunga, B. W.
Machatine, A. G. J.
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Univ Pretoria, Sch Phys, ZA-0002 Pretoria, South AfricaCSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South Africa
Machatine, A. G. J.
Kunert, H. W.
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Univ Pretoria, Sch Phys, ZA-0002 Pretoria, South AfricaCSIR, Natl Ctr Nanostruct Mat, POB 395, ZA-0001 Pretoria, South Africa
Kunert, H. W.
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 11, NO 2,
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Ajou Univ, Dept Mat Sci & Engn, Suwon 16499, South Korea
Ajou Univ, Energy Syst Res, Suwon 16499, South KoreaStanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
Hwang, Sung Won
Kim, Hyunkyu
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Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 61186, South KoreaStanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
Kim, Hyunkyu
Sim, Yelyn
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Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 61186, South KoreaStanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
Sim, Yelyn
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Surendran, Subramani
Sim, Uk
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Chonnam Natl Univ, Dept Mat Sci & Engn, Gwangju 61186, South KoreaStanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
Sim, Uk
Cho, In Sun
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Ajou Univ, Dept Mat Sci & Engn, Suwon 16499, South Korea
Ajou Univ, Energy Syst Res, Suwon 16499, South KoreaStanford Univ, Dept Mech Engn, Stanford, CA 94305 USA