We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
"Three-in-One": A New Hg-Based Selenide Hg<sub>7</sub>P<sub>2</sub>Se<sub>12</sub> Exhibiting Wide Infrared Transparency Range and Strong Nonlinear Optical Effect.
- Authors
Yu Chu; Hongshan Wang; Quan Chen; Xin Su; Zuxin Chen; Zhihua Yang; Junjie Li; Shilie Pan
- Abstract
The exploration of high-performance mid- and far-infrared (IR) nonlinear optical (NLO) crystals is an urgent need. Herein, a new Hg-based selenide Hg7P2Se12 (HPSe) is designed and synthesized by a rigid and flexible units coupled strategy. It is interesting that in the compound, three types of NLO-active units, including linear [HgSe2], triangular [HgSe3], and tetrahedral (MSe4) (M= Hg/P) groups, simultaneously exist. It shows a wide transparency range (0.84-22.8 µm), large SHG response (1 x AGS), high laser-induced damage threshold (≈ 2 x AGS), and a large birefringence (0.102 @2090 nm). Moreover, the compound melts congruently along with good crystal growth habits, and single crystals with a maximum size of ≈ 7 x 5 x 2 mm³ are obtained. Theoretical analyses confirm that the large NLO response originates from the synergistic effects of Hg-Se units, (PSe4) and nonbonding electrons. The results indicate that HPSe is a promising mid- and far-IR NLO material, and inspire a path to finding new classes of IR NLO materials that are different from traditional chalcopyrite materials by grouping the linear, planar, and tetrahedral units.
- Subjects
REVERSIBLE phase transitions; MERCURY; PHASE transitions; FRONTIER orbitals; MERCURY isotopes; CRYSTAL symmetry; NONLINEAR optical materials
- Publication
Advanced Functional Materials, 2024, Vol 34, Issue 17, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202314933