期刊
JOURNAL OF APPLIED PHYSICS
卷 113, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4805050
关键词
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资金
- National Natural Science Foundation of China [51272218]
- Hong Kong Polytechnic University [A-PL50]
Tunable upconversion (UC) multicolor luminescence is observed from Yb3+, Er3+, and Tm3+ tri-doped ferroelectric BaTiO3 (BTO) materials. By control of dopant concentrations, the lanthanide-doped BTO powders are capable of generating various UC spectra and color tunability. A white-light emission is achieved through an optimal design. Strong UC luminescence is also observed in the lanthanide-doped BTO thin-films grown on Pt/TiO2/SiO2/Si substrate, which can retain well-defined hysteresis loops with a remnant polarization (2P(r)) of 17.8 mu C/cm(2). These findings open the possibility of lanthanide-doped BTO as multifunctional materials, in which both luminescent and ferroelectric properties co-exist. (C) 2013 AIP Publishing LLC.
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