Epilayer control of photodeposited materials during UV photocatalysis

Epilayer control of photodeposited materials during UV photocatalysis

Epilayer control of photoassisted oxidation and reduction on the ferroelectric PbTiO 3 polar surface was investigated. Photo-oxidation of a AgNO 3 electrolyte resulting in formation of Ag 7 NO 11 particles was observed on the PbTiO 3 / Nb : SrTiO 3 film surface; whereas PbTiO 3 / SrRuO 3 / SrTiO 3 l...

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Veröffentlicht in:Applied physics letters 2009-06, Vol.94 (23), p.232901-232901-3
Hauptverfasser: Takahashi, R., Katayama, M., Dahl, Ø., Grepstad, J. K., Matsumoto, Y., Tybell, T.
Format: Artikel
Sprache:eng
Schlagworte:
CHARGE TRANSPORT
ELECTROLYTES
EPITAXY
FERROELECTRIC MATERIALS
LAYERS
LEAD COMPOUNDS
MATERIALS SCIENCE
NIOBIUM
OXIDATION
PHOTOCATALYSIS
PHOTOCHEMISTRY
SILVER NITRATES
STRONTIUM TITANATES
THIN FILMS
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Zusammenfassung:Epilayer control of photoassisted oxidation and reduction on the ferroelectric PbTiO 3 polar surface was investigated. Photo-oxidation of a AgNO 3 electrolyte resulting in formation of Ag 7 NO 11 particles was observed on the PbTiO 3 / Nb : SrTiO 3 film surface; whereas PbTiO 3 / SrRuO 3 / SrTiO 3 leads to AgNO 3 reduction under UV illumination. The oxidation reaction resulting in the formation of Ag 7 NO 11 is explained in terms of a rectifying interface between PbTiO 3 and Nb : SrTiO 3 , controlling the charge transport during UV photocatalysis.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3151820