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Cd4REO(BO3)3 (RE = Sm, Eu, Tb): three new cadmium–rare earth oxyborates with both good NLO and luminescence properties.
- Source :
- CrystEngComm; 4/14/2022, Vol. 24 Issue 14, p2542-2550, 9p
- Publication Year :
- 2022
-
Abstract
- Three nonlinear optical materials Cd<subscript>4</subscript>REO(BO<subscript>3</subscript>)<subscript>3</subscript> (RE = Sm, Eu, Tb) have been synthesized through high-temperature solid-state reactions. In their crystal structures, Cd(1)O<subscript>8</subscript> and Cd(2)O<subscript>6</subscript> polyhedra are interconnected via sharing edges and corners into a 3D anion framework with two types of tunnels based on 4- and 7-membered rings; the BO<subscript>3</subscript> groups are grafted into the above-mentioned types, creating new tunnels based on Cd<subscript>4</subscript>B<subscript>3</subscript> seven-membered rings, which are filled by RE<superscript>3+</superscript> cations. Powder SHG measurements revealed that the Cd<subscript>4</subscript>REO(BO<subscript>3</subscript>)<subscript>3</subscript> (RE = Sm, Eu, Tb) samples display SHG signals that are approximately 1.2, 5.6 and 1.5 times that of the KDP sample. In addition, Cd<subscript>4</subscript>EuO(BO<subscript>3</subscript>)<subscript>3</subscript> and Cd<subscript>4</subscript>TbO(BO<subscript>3</subscript>)<subscript>3</subscript> emit red and green light, respectively. The lifetime of the Eu(<superscript>5</superscript>D<subscript>0</subscript>) state for λ<subscript>ex,em</subscript> = 464, 610 nm in Cd<subscript>4</subscript>EuO(BO<subscript>3</subscript>)<subscript>3</subscript> is measured to be about 1.43 ms whereas the lifetime of the Tb(<superscript>5</superscript>D<subscript>4</subscript>) state for λ<subscript>ex,em</subscript> = 376, 543 nm in Cd<subscript>4</subscript>TbO(BO<subscript>3</subscript>)<subscript>3</subscript> is measured to be about 1.01 ms. [ABSTRACT FROM AUTHOR]
- Subjects :
- RARE earth metals
SAMARIUM
NONLINEAR optical materials
LUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 24
- Issue :
- 14
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 156162258
- Full Text :
- https://doi.org/10.1039/d2ce00080f