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A2Zn3P4S13 (A = Rb and Cs): First Infrared Nonlinear Optical Materials with Mixed Thiophosphate Functional Motifs PS4 and P2S6.
- Source :
- Journal of Materials Chemistry C; 6/21/2022, Vol. 10 Issue 23, p9146-9151, 6p
- Publication Year :
- 2022
-
Abstract
- Two new IR NLO compounds, namely Rb<subscript>2</subscript>Zn<subscript>3</subscript>P<subscript>4</subscript>S<subscript>13</subscript> (1) and Cs<subscript>2</subscript>Zn<subscript>3</subscript>P<subscript>4</subscript>S<subscript>13</subscript> (2), have been obtained by introducing d<superscript>10</superscript> closed-shell cations in an alkali-metal containing thiophosphate system. Compounds 1 and 2 are isostructural and feature a 3D [Zn<subscript>3</subscript>P<subscript>4</subscript>S<subscript>13</subscript>] anionic framework. Both compounds exhibit moderate phase-matching SHG intensities at 1910 nm (0.1 × AGS for 1 and 2) and high LIDTs (6.1 × AGS for 1 and 5.2 × AGS for 2). They have wide transparent regions of 2.5–17.7 μm and 2.5–17.0 μm for 1 and 2, respectively, which cover the important far-IR atmospheric window of 3–5 and 8–14 μm for practical applications. Both compounds simultaneously contain two types of NLO-active thiophosphate units (PS<subscript>4</subscript> and P<subscript>2</subscript>S<subscript>6</subscript>) in their structures, which to the best of our knowledge, is unprecedented in known IR NLO thiophosphates. The NLO efficiencies of 1 and 2 are mainly due to the covalent [Zn<subscript>2</subscript>P<subscript>2</subscript>S<subscript>7</subscript>]<superscript>2−</superscript> framework, in which the contribution of P<subscript>2</subscript>S<subscript>6</subscript> units is remarkably larger than that of the PS<subscript>4</subscript> units. This work sheds light on the design of promising IR NLO materials by mixing different thiophosphate functional motifs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507526
- Volume :
- 10
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry C
- Publication Type :
- Academic Journal
- Accession number :
- 157500092
- Full Text :
- https://doi.org/10.1039/d2tc01351g