title: High-Temperature Ferroelectricity and Photoluminescence in a Hybrid Organic-Inorganic Compound: (3-Pyrrolinium)MnCl3.
abstract: Coupling of ferroelectricity and optical properties has become an interesting aspect of material research. The switchable spontaneous polarization in ferroelectrics provides an alternative way to manipulate the light-matter interaction. The recent observation of strong photoluminescence emission in ferroelectric hybrid organic-inorganic compounds, (pyrrolidinium)MnX3 (X = Cl or Br), is an attractive approach to high efficiency luminescence with the advantages of ferroelectricity. However, (pyrrolidinium)MnX3 only displays ferroelectricity near or below room temperature, which limits its future applications in optoelectronics and multifunctional devices. Here, we rationally designed and synthesized high-temperature luminescent ferroelectric materials. The new hybrid compound (3-pyrrolinium)MnCl3 has a very high Curie temperature, Tc = 376 K, large spontaneous electronic polarization of 6.2 μC/cm(2), and high fatigue resistance, as well as high emission efficiency of 28%. This finding is a further step to the practical use of ferroelectric luminescence based on organic-inorganic compounds.
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Heng-Yun
authors.initials: HY
authors.lastname: Ye
authors.affiliation: Department of Physics, Southeast University , Nanjing 211189, P. R. China.
authors.forename: QiongHua
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: Department of Physics, Southeast University , Nanjing 211189, P. R. China.
authors.forename: XiangHong
authors.initials: X
authors.lastname: Niu
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Wei-Qiang
authors.initials: WQ
authors.lastname: Liao
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Fu
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Yu-Meng
authors.initials: YM
authors.lastname: You
authors.affiliation: Department of Physics, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Jinlan
authors.initials: J
authors.lastname: Wang
authors.affiliation: Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences , Fuzhou 350002, P. R. China.
authors.forename: Zhong-Ning
authors.initials: ZN
authors.lastname: Chen
authors.affiliation: Ordered Matter Science Research Center, Southeast University , Nanjing 211189, P. R. China.
authors.forename: Ren-Gen
authors.initials: RG
authors.lastname: Xiong