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Special Issue:
SPECIAL TOPIC — Structures and properties of materials under high pressure
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| SPECIAL TOPIC — Structures and properties of materials under high pressure |
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Structural regulation and optical behavior of zero-dimensional Cu(I)-based organometallic halides under pressure |
| Runnan Ye(叶润楠)1,†, Jingtian Wang(王敬天)2,†, Jiayi Yang(杨佳毅)2,†, Xuchen Wang(王旭晨)1, Junce Lei(雷钧策)1, Wenya Zhao(赵文雅)2, Yufan Meng(孟雨凡)2, Guanjun Xiao(肖冠军)2,‡, and Bo Zou(邹勃)2 |
1 College of Physics, Jilin University, Changchun 130012, China;
2 State Key Laboratory of High Pressure and Superhard Materials, College of Physics, Jilin University, Changchun 130012, China |
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Abstract Low-dimensional hybrid metal halides exhibit broadband emission and high photoluminescence quantum yield (PLQY), making them promising candidates for the next-generation luminescent materials in lighting applications. Here, the emission intensity of (C$_{12}$H$_{24}$O$_{6}$)$_{2}$Na$_{2}$(H$_{2}$O)$_{3}$Cu$_{4}$I$_{6}$ was strengthened between 9.3 GPa and 17.2 GPa, accompanied by the redshift of emission wavelength. The photoluminescence (PL) of Cu(I)-based organometallic halides originates from multiple emission states, which are a metal-to-ligand charge transfer or a halide-to-ligand charge transfer (MLCT/HLCT) excited state and a cluster-centered (CC) excited state. MLCT/HLCT-related emission wavelength redshifts while CC-related emission wavelength remains unchanged, indicating that the rearrangement of different emission states plays a critical role in the changes of luminescence wavelength. This study not only deepens the understanding of the influence of high pressure on (C$_{12}$H$_{24}$O$_{6}$)$_{2}$Na$_{2}$(H$_{2}$O)$_{3}$Cu$_{4}$I$_{6}$, but also provides valuable insights into the structure-property relationship of zero-dimensional Cu(I)-based organometallic halides.
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Received: 23 February 2025
Revised: 12 March 2025
Accepted manuscript online: 18 March 2025
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PACS:
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62.50.-p
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(High-pressure effects in solids and liquids)
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| Fund: Project supported by the National Key R&D Program of China (Grant No. 2023YFA1406200), the National Natural Science Foundation of China (Grant Nos. 12174144 and 12474009), and the Graduate Innovation Fund of Jilin University (Grant No. 2024CX201). |
Corresponding Authors:
Guanjun Xiao
E-mail: xguanjun@jlu.edu.cn
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Cite this article:
Runnan Ye(叶润楠), Jingtian Wang(王敬天), Jiayi Yang(杨佳毅), Xuchen Wang(王旭晨), Junce Lei(雷钧策), Wenya Zhao(赵文雅), Yufan Meng(孟雨凡), Guanjun Xiao(肖冠军), and Bo Zou(邹勃) Structural regulation and optical behavior of zero-dimensional Cu(I)-based organometallic halides under pressure 2025 Chin. Phys. B 34 066204
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