Influence of Au nanoparticles on the photoluminescent and electrical properties of Bi{sub 3.6}Eu{sub 0.4}Ti{sub 3}O{sub 12} ferroelectric thin films

Journal Article · Mon Jul 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4887810· OSTI ID:22308487

Su, Li; Qin, Ni; Xie, Wei; Fu, Jianhui; Bao, Dinghua ^[1]

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1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275 (China)

Au-doped Bi{sub 3.6}Eu{sub 0.4}Ti{sub 3}O{sub 12} (BET) thin films were prepared on fused silica and Pt/Ti/SiO{sub 2}/Si substrates by a chemical solution deposition method. The existence of Au nanoparticles (NPs) has been confirmed by X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscope analysis. Enhanced photoluminescence (PL) of Eu{sup 3+} ions was obtained in a wide range of Au doping level. Role of the Au NPs in the PL enhancement was investigated by means of optical absorption, excitation, and emission spectra, as well as decay lifetime measurements. The results indicated that the intra-4f transition of Eu{sup 3+} ions can be intensively activated by the coupling of the charge transfer band of BET with the {sup 5}D{sub 0} state of Eu{sup 3+} ions. The influence of Au NPs on the PL properties of Eu{sup 3+} ions in the present thin films was attributed to the band bending at Au/BET interface and the localized surface plasma resonance absorption of Au NPs in the visible light region. The dielectric and ferroelectric properties of Au-doped BET thin films were investigated as well.

• OSTI ID: 22308487
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
BISMUTH COMPOUNDS
DOPED MATERIALS
ELECTRICAL PROPERTIES
EMISSION SPECTRA
EUROPIUM COMPOUNDS
EUROPIUM IONS
EXCITATION
FERROELECTRIC MATERIALS
GOLD
NANOPARTICLES
PHOTOLUMINESCENCE
RESONANCE ABSORPTION
SILICON OXIDES
SUBSTRATES
SURFACES
THIN FILMS
TITANATES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY