Journal
ADVANCED SCIENCE
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1002/advs.202304463
Keywords
multifunctional materials; nonlinear optical crystals; partial fluorination; second harmonic generation; supercritical hydrothermal method
Ask authors/readers for more resources
This study achieved the synthesis of five new non-centrosymmetric lanthanide selenites by partial fluorination of the lanthanide oxygen polyhedron. These compounds exhibited significant differences in their nonlinear optical properties and displayed excellent stability and luminescent emission, indicating their potential as multifunctional nonlinear optical materials. This work provided an effective approach for the design and synthesis of high-performing nonlinear optical materials.
It has historically been exceedingly challenging to create physically and chemically stable lanthanide compounds with strong second harmonic generation (SHG) due to their strong preference to central symmetry. In this work, five new non-centrosymmetric lanthanide selenites, namely, Ln(2)F(2)(OH2)(MoO3)(2)(SeO3)(2) (Ln = Sm, Eu, Gd, Tb and Dy), are achieved by partial fluorination of the lanthanide oxygen polyhedron. An HF corrosion resistant supercritical hydrothermal method is developed, which is a facile and universal method for HF corrosion and high-temperature high-pressure environment. The title compounds displayed a novel 3D framework composed of 1D molybdenum selenite chains bridged by Ln(2)F(2)O(12)(OH2) dimers. Their powder SHG responses showed a large difference, ranging from 1.0 to 9.0 x KH2PO4 (KDP) at 1064 nm. The half-filled Gd compound exhibited very strong SHG efficiency of up to 1.2 x KTP (KTiOPO4) at 2050 nm. Compounds Tb and Gd are the first lanthanide selenites with SHG intensity reaching KTP level, which is very rare in this system. Furthermore, these compounds can also possess excellent physicochemical stability and strong luminescence emission, indicating that they are promising multifunctional nonlinear optical materials. This work offered an effective way for design and synthesis of multifunctional and high-performant nonlinear optical materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available