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Multifunctional applications enabled by tunable multi-emission and ultra-broadband VIS-NIR luminescence energy transfer in Sn/Mn-doped lead-free Zn-based metal halides.
Mater Horiz
January 2025
School of Physical Science and Technology, School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
Metal halides are widely applied in solid-state lighting (SSL), optoelectronic devices, information encryption, and near-infrared (NIR) detection due to their superior photoelectric properties and tunable emission. However, single-component phosphors that can be efficiently excited by light-emitting diode (LED) chips and cover both the visible (VIS) and NIR emission regions are still very rare. To address this issue, (TPA)ZnBr:Sn/Mn (TPA = [(CHCHCH)N]) phosphors were synthesized by using the solvent evaporation method.
View Article and Find Full Text PDFThe origin of broadband blue emission in zero-dimensional organic lead iodine perovskites: A first-principles study.
J Chem Phys
October 2024
HSE University, Moscow 101000, Russia.
Broadband blue emission in zero-dimensional perovskites has received considerable attention, which is very important for the realization of stable blue-light emitters; however, the underlying formation mechanism remains unclear. Based on first-principles calculations, we have systematically studied the self-trapped excitons (STEs) behavior and luminescence properties in 0D-(DMA)4PbI6 perovskite. Our calculations show that there is a significant difference between the intrinsic STE luminescence mechanism (∼2.
View Article and Find Full Text PDFMultimode Luminescence Tailoring in PMANa(In,Sb)Cl Organic-inorganic Hybrid Metal Halide via Rigid Benzene Ring Induced Local Lattice Distortion.
Angew Chem Int Ed Engl
December 2024
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
Low dimensional organic-inorganic hybrid metal halide materials have attracted extensive attention due to their superior optoelectronic properties. However, low photoluminescence quantum yields (PLQYs) caused by parity-forbidden transition hinder their further application in optoelectronic devices. Herein, a novel yellow-emitting PMANa(In,Sb)Cl (CHN, PMA) low-dimensional OIMHs single crystal with a PLQY as high as 88 % was successfully designed and synthesized, originating from the fact that the doping of Sb effectively relaxes the parity-forbidden transition by strong spin-orbit (SO) coupling and Jahn-Teller (JT) interaction.
View Article and Find Full Text PDFChiral multiferroicity in two-dimensional hybrid organic-inorganic perovskites.
Nat Commun
July 2024
Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China.
Chiral multiferroics offer remarkable capabilities for controlling quantum devices at multiple levels. However, these materials are rare due to the competing requirements of long-range orders and strict symmetry constraints. In this study, we present experimental evidence that the coexistence of ferroelectric, magnetic orders, and crystallographic chirality is achievable in hybrid organic-inorganic perovskites [(R/S)-β-methylphenethylamine]CuCl.
View Article and Find Full Text PDFDesign and synthesis of diverse Cd/Zn/Cu coordination polymers tuned by dicarboxylate and auxiliary 1,4-bis(pyridin-4-ylmethyl)piperazine ligands with luminescence and Hirshfeld surface analyses.
Acta Crystallogr B Struct Sci Cryst Eng Mater
December 2023
Faculty of Science, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China.
Four new coordination polymers, including 1D, 2D and 3D structures, were synthesized via a hydrothermal method using Cd/Zn/Cu metal salts as nodes. These polymers were formed through self-assembly of four different dicarboxylic acid ligands, namely adamantane-1,3-dicarboxylic acid (Hadc), glutaric acid (Hglu), 5-hydroxyisophthalic acid (Hhip) and fumaric acid (Hfum), in conjunction with the auxiliary ligand [1,4-bis(pyridin-4-ylmethyl)piperazine (bpmp). The corresponding formulae are [Cd(adc)(bpmp)Cl(HO)] (1), {[Cd(glu)(bpmp)(HO)]·8HO·2CHOH} (2), [Zn(hip)(bpmp)(HO)] (3) and [Cu(fum)(bpmp)(HO)] (4).
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