Details

Autor(en) / Beteiligte

• Feng, Ping
• Zhang, Jia-Xiang
• Ran, Mao-Yin
• Wu, Xin-Tao
• Lin, Hua
• Zhu, Qi-Long

Titel

Rare-earth-based chalcogenides and their derivatives: an encouraging IR nonlinear optical material candidate

Ist Teil von

• Chemical science (Cambridge), 2024-04, Vol.15 (16), p.5869-5896

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• With the continuous development of laser technology and the increasing demand for lasers of different frequencies in the infrared (IR) spectrum, research on infrared nonlinear optical (NLO) crystals has garnered growing attention. Currently, the three main commercially available types of borate materials each have their drawbacks, which limit their applications in various areas. Rare-earth (RE)-based chalcogenide compounds, characterized by the unique f-electron configuration, strong positive charges, and high coordination numbers of RE cations, often exhibit distinctive optical responses. In the field of IR-NLO crystals, they have a research history spanning several decades, with increasing interest. However, there is currently no comprehensive review summarizing and analyzing these promising compounds. In this review, we categorize 85 representative examples out of more than 400 non-centrosymmetric (NCS) compounds into four classes based on the connection of different asymmetric building motifs: (1) RE-based chalcogenides containing tetrahedral motifs; (2) RE-based chalcogenides containing lone-pair-electron motifs; (3) RE-based chalcogenides containing [BS 3 ] and [P 2 Q 6 ] motifs; and (4) RE-based chalcohalides and oxychalcogenides. We provide detailed discussions on their synthesis methods, structures, optical properties, and structureperformance relationships. Finally, we present several favorable suggestions to further explore RE-based chalcogenide compounds. These suggestions aim to approach these compounds from a new perspective in the field of structural chemistry and potentially uncover hidden treasures within the extensive accumulation of previous research. Non-centrosymmetric rare-earth-based chalcogenides and their derivatives could offer novel insights into the targeted design and exploratory synthesis of new IR nonlinear optical candidates.