Back to Search
Start Over
Large enhancement of upconversion luminescence in Er3+/In3+:Ba0.85Ca0.15TiO3 lead-free piezoelectric ceramics.
- Source :
- Journal of Materials Science: Materials in Electronics; Jun2018, Vol. 29 Issue 11, p9007-9015, 9p
- Publication Year :
- 2018
-
Abstract
- A series of In<superscript>3+</superscript>-doped Ba<subscript>0.85</subscript>Ca<subscript>0.15</subscript>TiO<subscript>3</subscript>:0.75%Er<superscript>3+</superscript>/xIn<superscript>3+</superscript> (BCT:Er/xIn) lead-free piezoelectric ceramics with excellent upconversion luminescence were synthesized by the solid state reaction method. The effects of In<superscript>3+</superscript> content on the crystal structure, ferroelectric, dielectric, piezoelectric, and upconversion luminescence properties were systematically studied. Under 980 nm excitation, a giant enhancement of the green emission (550 nm) by 10 times is achieved upon 2.5% mol In<superscript>3+</superscript> doping, which is rarely observed in rare-earth ions-doped perovskite ferroelectric materials. The ultraviolet-visible-near infrared absorption measurements show that the In<superscript>3+</superscript> doping may improve the dissolution of Er<superscript>3+</superscript> ions and modify the isolate-/clustered-Er<superscript>3+</superscript> ratio for x ≤ 2.5%, resulting in the enhancement of the absorption cross-section, thereby contributing to the enhancement of green luminescence. Unfortunately, the In<superscript>3+</superscript> doping suppresses the ferroelectric and piezoelectric properties of the BCT:Er/xIn ceramics. This problem can be resolved by adding a small amount (1 mol%) of Yb<superscript>3+</superscript> to the BCT:Er/xIn ceramics to restore their good ferroelectric and piezoelectric properties. Such In<superscript>3+</superscript> and rare-earth ions co-doped ceramics with greatly enhanced upconversion luminescence and good ferroelectricity and piezoelectricity may have potential applications in electro-optical devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 29
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 129629836
- Full Text :
- https://doi.org/10.1007/s10854-018-8925-3