A series of new rare-earth sulfide borates RE3S3BO3 (RE = Nd, Tb, Dy): Syntheses, structures and optical properties

Xie, Yun; Chen, Da-Li; Wei, Yu-Long; Zhang, Nan; Yao, Wen-Dong; Guo, Sheng-Ping

doi:10.1016/j.jssc.2023.124277

Cited by 1 publication

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“…In 2015, we synthesized the first sulfide borate with ordered structure, namely, Sm 3 S 3 BO 3 (Figure a), which crystallizes with a unique structure type . Afterward, isostructural RE 3 S 3 BO 3 (RE = Nd, Gd, Tb, Dy) were obtained. , Regrettably, they all crystallize in CS space group P and do not satisfy the prerequisite for NLO activity. Besides, Eu 9 MgS 2 B 20 O 41 (EMSBO) was discovered in 2019 .…”

Section: Five Simple Methods To Discover Practical Ir Nlo Candidatesmentioning

confidence: 99%

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Rational Design of Novel Promising Infrared Nonlinear Optical Materials: Structural Chemistry and Balanced Performances

Zhou,

Guo

2024

Acc. Chem. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Second-order nonlinear optical (NLO) materials are currently a hot topic in modern solid-state chemistry and optics because they can produce coherent light by frequency conversion. Noncentrosymmetric (NCS) structure is not only the prerequisite for NLO materials but also a challengeable issue because materials tend to be centrosymmetric (CS) in terms of thermodynamical stability. Among NLO materials, an excellent infrared (IR) candidate should simultaneously meet several strict key conditions including a large NLO coefficient, high laser-induced damage threshold (LIDT), phase-matchable (PM) behavior, and so on. Achieving a balance between the large NLO effect and high LIDT is difficult, as they have contradictory requirements for chemical bonds. Considering the urgent need of the high-power IR laser market and the drawbacks of the available ones, exploring new highperformance IR NLO crystals is necessary while challenging. In this Account, we first briefly introduce the status and advancement of IR NLO crystals and emphasize the criteria of an excellent candidate. Then, we will introduce five simple methods developed by us to discover practical NLO candidates through understanding of the chemical composition−structure− NLO performance relationship. (1) A rarely investigated system with simple chemical compositions as new-type NLO crystals, namely, adducts containing S 8 molecules, are developed. Combining a chairlike S 8 unit with other units through van der Waals forces has successfully obtained several high-performance NLO adducts. (2) The main trend in exploring new NLO crystals is that the chemical composition is more and more diversified and the structure is more and more complex, and expensive and chemically active alkaline and alkaline earth metals are usually introduced as counter cations. In contrast, the research on systems with simple chemical compositions, simple structures, and low costs has been continuously ignored. The binary M 2 Q 3 (M = Ga, In; Q = S, Se) family with rich acentric modifications has been systematically investigated, and they all exhibit strong SHG effects and high LIDTs. (3) We first proposed the concept of inducing CS structures transformed to NCS ones by partial cation substitution to design novel NLO crystals. Considering the huge number of CS structures in the database compared to the number of NCS structures, it is an attractive method to apply CS structures as the parents to obtain potential NLO materials via partial-substitution-induced symmetry breaking. A series of chalcogenides with high NLO performances have been successfully obtained by us in this way. (4) We investigated the first NLO-active rare earth (RE) chalcophosphates and developed this family systematically, and they demonstrate wonderful comprehensive NLO properties. ( 5) We created a novel mixed-anion system for NLO applications, namely, chalcogenide borates. Usually, mixed-anion compounds can engender a synergistic effect to obtain desired IR NLO properties....

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Section: Five Simple Methods To Discover Practical Ir Nlo Candidatesmentioning

confidence: 99%

“…42 Afterward, isostructural RE 3 S 3 BO 3 (RE = Nd, Gd, Tb, Dy) were obtained. 43,44 Regrettably, they all crystallize in CS space group P1 and do not satisfy the prerequisite for NLO activity. Besides, Eu 9 MgS 2 B 20 O 41 (EMSBO) was discovered in 2019.…”

Section: Chalcogenide Boratesmentioning

confidence: 99%