Rare-Earth/d<sup>10</sup> Dual-Metal Oxychalcogenides as Infrared Nonlinear-Optical Materials
Oxychalcogenides are receiving increasing interest as nonlinear-optical (NLO) materials because of the possible combination of advantages from oxides and chalcogenides. Here, two new pentanary oxythiogermanates Eu<sub>2</sub>MGe<sub>2</sub>OS<sub>6</sub> [M = Zn (<b>1</b>), Cd (<b>2</b>)] were obtained by the facile metal oxide-boron-sulfur solid-state route. They crystallize with a melilite-type structure and feature {[MGe<sub>2</sub>OS<sub>6</sub>]<sup>4-</sup>}<sub>∞</sub> layers built by Ge<sub>2</sub>OS<sub>6</sub> dimers and MS<sub>4</sub> tetrahedra. Their optical band gaps are 2.37 and 2.38 eV. As the first NLO rare-earth (RE)/d<sup>10</sup> dual-metal oxychalcogenides, they exhibit phase-matchable NLO responses and enhanced laser-induced damage thresholds. Theoretical calculations show that the NLO responses are predominantly contributed by the EuOS<sub>7</sub> motifs. This work provides the potential of RE/d<sup>10</sup> dual-metal-based NLO materials.
Authors
- Jing Zhu (ORCID: https://orcid.org/0000-0001-5555-8560)
- Sheng‐Ping Guo (ORCID: https://orcid.org/0000-0002-9703-1537)
- Haiping Xu (ORCID: https://orcid.org/0000-0003-1930-0401)
- Nan Zhang (ORCID: https://orcid.org/0000-0002-4630-2229)
- Wenlong Liu (ORCID: https://orcid.org/0000-0002-8514-6812)
- Ying Jiang (ORCID: https://orcid.org/0000-0003-4200-3050)
- Wen‐Dong Yao
- Faming Tian (ORCID: https://orcid.org/0000-0001-7083-3380)
Institutions
- Yunnan University (CN)
- Yangzhou University (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2024-11-06
- DOI
- https://doi.org/10.1021/acs.inorgchem.4c04100
- Citations
- 6
- Primary Topic
- Crystal Structures and Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.71
Funders
- National Natural Science Foundation of China
- People's Government of Yunnan Province