In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 55, No. 10S ( 2016-10-01), p. 10TA14-
Abstract:
BiFeO 3 and Ag nanoparticle-embedded BiFeO 3 thin films were prepared on Pt/TiO x /SiO 2 /Si and MgO(100) substrates using colloidal silver and BiFeO 3 metal–organic precursor solutions. Colloidal silver solution was prepared by a chemical reductive method using NaBH 4 as a reductant. The prepared Ag nanoparticles exhibited characteristic optical absorption properties based on their surface plasmon resonance related to particle size. The synthesized BiFeO 3 and Ag nanoparticle/BiFeO 3 thin films demonstrated rapid on/off responses of photocurrent to visible light. The Ag nanoparticle-incorporated BiFeO 3 film exhibited a 2–4-fold higher photocurrent than the BiFeO 3 film. Optical and ferroelectric properties did not change markedly even when Ag nanoparticles were embedded in the BiFeO 3 thin film within the quantities of this study. Furthermore, in the Ag nanoparticle/BiFeO 3 composite structure, Ag nanoparticles were introduced in the near-metallic state with maintained their nanometer size. In the Ag nanoparticle-embedded BiFeO 3 film, photoinduced charge separation and transport of photoexcited carriers were enhanced by the surface plasmon effect of nanosized Ag particles as well as the internal bias electric field existed in the narrow-bandgap BiFeO 3 thin film.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.7567/JJAP.55.10TA14
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2016
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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