Prismatic crystal field stabilized divalent rare-earth chalcogenide REIIBII6CIII6QVI16 with bifunctionality

Linan Wang; Hongshan Wang; Qi Sun; Zuxin Chen; Fei Tang; Shilie Pan; Junjie Li; Miriding Mutailipu

doi:10.59717/j.xinn-mater.2024.100118

The Innovation Materials > 2025 Vol. 3 > No. 1 > 100118

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Prismatic crystal field stabilized divalent rare-earth chalcogenide RE^IIB^II₆C^III₆Q^VI₁₆ with bifunctionality

1.
Research Center for Crystal Materials; CAS Key Laboratory of Functional Materials and Devices for Special Environments; Xinjiang Key Laboratory of Functional Crystal Materials; Xinjiang Technical Institute of Physics & Chemistry, CAS, Urumqi 830011, China
2.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3.
School of Semiconductor Science and Technology, South China Normal University, Foshan 528225, China
4.
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
5.
These authors contributed equally

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Corresponding authors: slpan@ms.xjb.ac.cn (S.P.); lijunjie@ms.xjb.ac.cn (J.L.); miriding@ms.xjb.ac.cn (M.M.)
Received Date: October 23, 2024

Accepted Date: January 21, 2025

Published Online: January 24, 2025

The Innovation Materials 3(1), https://doi.org/10.59717/j.xinn-mater.2024.100118 | Cite this article

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PUBLIC SUMMARY
1. Series of divalent rare-earth (RE²⁺) chalcogenides are designed and synthesized.
  
  RE²⁺ is stabilized in a prismatic crystal field, rather than the common octahedral crystal field.
  
  The bifunctional RE²⁺ chalcogenides show distinctive emission and nonlinear optical properties.
  
  PrMg₆Ga₆S₁₆ is the first stable Pr²⁺ contained chalcogenide with evident luminescence emission properties.

ABSTRACT

ABSTRACT

Divalent rare-earth (RE²⁺) compounds with unique electronic configurations have been known for more than 100 years, and many efforts have been done, but the synthesis of inorganic RE²⁺ chalcogenides is still a challenge due to the chemical instability of RE²⁺. Herein, nine new RE²⁺ chalcogenides RE^IIB^II₆C^III₆Q^VI₁₆ (RE^II = La, Ce, Pr, Yb; B^II = Mg, Mn; C^III = Al, Ga; Q^VI = S, Se) have been rationally designed in an octahedra and tetrahedra composed flexible framework, and fabricated in experiment. In the nine compounds, RE²⁺ is stabilized by a prismatic crystal field, rather than the common octahedral crystal field. The compounds, especially for the sulfides, exhibit significant luminescence properties with wide visible light emission bands under the excitation of ultraviolet source. Meanwhile, the representative LaMg₆Ga₆Se₁₆ exhibits a strong nonlinear optical (NLO) response of 1.5 × AgGaS₂ (AGS), and a high laser-induced damage threshold (LIDT) of 3 × AGS. The results demonstrate that the RE²⁺ chalcogenides are bifunctional compounds, enriching the chemical diversity of RE materials, and opening an avenue for the design of new functional materials with RE²⁺ based on the stable and flexible inorganic anionic frameworks.

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Wang L., Wang H., Sun Q., et al. (2025). Prismatic crystal field stabilized divalent rare-earth chalcogenide REIIBII6CIII6QVI16 with bifunctionality. The Innovation Materials 3:100118. https://doi.org/10.59717/j.xinn-mater.2024.100118

Wang L., Wang H., Sun Q., et al. (2025). Prismatic crystal field stabilized divalent rare-earth chalcogenide RE^IIB^II₆C^III₆Q^VI₁₆ with bifunctionality. The Innovation Materials 3:100118. https://doi.org/10.59717/j.xinn-mater.2024.100118

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Prismatic crystal field stabilized divalent rare-earth chalcogenide RE^IIB^II₆C^III₆Q^VI₁₆ with bifunctionality