Molecular Engineering Regulation Achieving Out-of-Plane Polarization in Rare-Earth Hybrid Double Perovskites for Ferroelectrics and Circularly Polarized Luminescence.

Autor: Wang N; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Xu ZJ; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Ni HF; Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, P.R. China., Luo W; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Li HK; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Ren ML; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Shi C; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Ye HY; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China., Fu XB; Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China., Zhang Y; Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, P.R. China., Miao LP; Chaotic Matter Science Research Center, Jiangxi Province Key Laboratory of Functional Crystalline Materials Chemistry, International Institute for Innovation, Jiangxi, University of Science and Technology, Ganzhou, 341000, P.R. China.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Sep 23; Vol. 63 (39), pp. e202409796. Date of Electronic Publication: 2024 Aug 20.
DOI: 10.1002/anie.202409796
Abstrakt: Out-of-plane polarization is a highly desired property of two-dimensional (2D) ferroelectrics for application in vertical sandwich-type photoferroelectric devices, especially in ultrathin ferroelectronic devices. Nevertheless, despite great advances that have been made in recent years, out-of-plane polarization remains unrealized in the 2D hybrid double perovskite ferroelectric family. Here, from our previous work 2D hybrid double perovskite HQERN ((S3HQ) 4 EuRb(NO 3 ) 8 , S3HQ=S-3-hydroxylquinuclidinium), we designed a molecular strategy of F-substitution on organic component to successfully obtain FQERN ((S3FQ) 4 EuRb(NO 3 ) 8 , S3FQ=S-3-fluoroquinuclidinium) showing circularly polarized luminescence (CPL) response. Remarkably, compared to the monopolar axis ferroelectric HQERN, FQERN not only shows multiferroicity with the coexistence of multipolar axis ferroelectricity and ferroelasticity but also realizes out-of-plane ferroelectric polarization and a dramatic enhancement of Curie temperature of 94 K. This is mainly due to the introduction of F-substituted organic cations, which leads to a change in orientation and a reduction in crystal lattice void occupancy. Our study demonstrates that F-substitution is an efficient strategy to realize and optimize ferroelectric functional characteristics, giving more possibility of 2D ferroelectric materials for applications in micro-nano optoelectronic devices.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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