Rational Design of Single‐Component White‐Light Emissive Molecular Copper Clusters DOI Creative Commons

Alain Rocheteau,

Lanig Lemeur,

Marie Cordier

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 13(2)

Published: Nov. 21, 2024

Abstract The development of low‐cost and earth‐abundant phosphors for substituting expensive noble metals toxic lead materials is currently major importance sustainable solid‐state lighting technologies. Hybrid copper halide are receiving considerable attention due to their unique diverse structural photophysical properties combined low cost toxicity. This article reports the rational design iodide compounds developing single‐component white light emitters. By a ligand engineering strategy, energy layout molecular clusters can be adjusted variation in relative intensity two emission bands obtained, enabling emitted. Temperature dependence this dual‐emission feature also allows high contrast luminescence thermochromism. Thanks good solubility properties, studied have been successfully incorporated within organic polymer leading with processability suitable application development. Therefore, potential applicability these composite has demonstrated various fields as ratiometric thermometry, emitters phosphor‐converted white‐light emitting diodes, ink anticounterfeiting properties. study highlights power strategy develop multifunctional based on light‐emitting materials.

Language: Английский

Light‐Emitting Diodes Based on Metal Halide Perovskite and Perovskite Related Nanocrystals DOI Creative Commons
Ying Liu, Zhuangzhuang Ma, Jibin Zhang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Light‐emitting diodes (LEDs) based on halide perovskite nanocrystals have attracted extensive attention due to their considerable luminescence efficiency, wide color gamut, high purity, and facile material synthesis. Since the first demonstration of LEDs MAPbBr 3 was reported in 2014, community has witnessed a rapid development performances. In this review, historical perspective is provided then comprehensive survey current strategies for high‐efficiency lead‐based LEDs, including synthesis optimization, ion doping/alloying, shell coating presented. Then basic characteristics emission mechanisms lead‐free perovskite‐related emitters environmentally friendly from standpoint different colors are reviewed. Finally, progress LED applications covered an outlook opportunities challenges future developments field provided.

Language: Английский

Citations

2
Pressure‐Induced Excitation‐Dependent Emission Color Tuning and Enhancement in 1D Zigzag Edge‐Sharing Perovskites (C6H10N2)PbX4 (X = Br, Cl) DOI
Xue‐Qian Wu, Yi‐Yang Sun, Lingrui Wang

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

Abstract 1D zigzag edge‐sharing perovskites have generated intense research interest due to their unique structures and optoelectronic properties. Recent efforts focused on refining these enhance efficiency across various applications. Herein, high‐pressure is utilized modulate the properties of two Pb‐based perovskites, (AMP)PbCl 4 (AMP)PbBr (where AMP 2+ = C 6 H 10 N 2 ), characterized by [PbX ] 2− ∞ chains linked through hydrogen bonding. An inverse excitation‐dependent emission phenomenon enhancement are observed in attributed contraction inhomogeneously coordinated 4− octahedra. Pressure‐induced lattice promotes overlap Pb X orbitals, resulting a decrease bandgap. Concurrently, pressure‐induced phase transitions, distortion octahedra, lead discontinuous decreases These optical structural explorations facilitate systematic design halide with desired characteristics.

Language: Английский

Citations

1
Reversible Asymmetric Deformation Modulating Dexter Energy Transfer in Manganese Halide Perovskite with Temperature‐pressure Equivalence Effect DOI Open Access
Yangyang Cai, Siyu Yan, Xinran Du

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Deformation of metal halide perovskite can induce many interesting properties. This study focuses on a manganese-based organic-inorganic with unique structure in which tetrahedral and octahedral coordination coexist single crystal unit cell. emits at 519 615 nm room temperature. In contrast to conventional perovskites, this regulates the Dexter energy transfer between two modes through asymmetric deformation without phase transition, producing reversible tunable photoluminescence. Notably, under atmospheric pressure, as temperature increases from liquid nitrogen 135 °C, luminescence color shifts progressively red CIE coordinate (0.59, 0.27) yellow green (0.33, 0.56), excellent reversibility. Additionally, temperature, orange (0.54, 0.42) (0.61, pressure 1 atm 7.5 GPa. novel coexisting has temperature-pressure equivalence effect modulating luminescent changes. It tunes emission by forming deformations contraction (or expansion) tetrahedra expansion contraction) octahedra upon stimulation, providing new pathway tune perovskites.

Language: Английский

Citations

1
压致变色材料：研究与应用进展 DOI

Renwei Ye,

Yunjie Lu,

Jin Ge

et al.

Scientia Sinica Chimica, Journal Year: 2024, Volume and Issue: 54(9), P. 1549 - 1575

Published: June 28, 2024

Citations

0
Halogen-Dependent Deep-Blue Circularly Polarized Emitters with Ultrahigh-Color-Purity Under High Pressure DOI
Shuang‐Quan Zang,

Meng‐En Sun,

Fei Wang

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract Achieving free exciton (FE) emission in low-dimensional (2D, 1D, and 0D) metal halide perovskites is challenging due to the strong electron–phonon coupling effect induced by lead octahedral distortion. Herein, FE behaviors of three new 2D chiral perovskites, (R-3-XPEA)2PbBr4 (PEA = phenethylamine, X F, Cl, Br), were investigated under hydrostatic pressure. (R-3-BrPEA)2PbBr4 (R-3-ClPEA)2PbBr4 exhibited high color–purity deep-blue circularly polarized luminescence (CPL) dominated at pressures 1.7 2.5 GPa, respectively, whereas (R-3-FPEA)2PbBr4 presented broadband warm-white CPL The structural analysis theoretical calculation results demonstrated that pressure reduced penetration depths R-3-BrPEA+ and R-3-ClPEA+ into [PbBr6]4- inorganic frameworks strengthening halogen···halogen (Br···Br Cl···Cl) interactions between organic amines, resulting smaller distortion weaker (R-3-ClPEA)2PbBr4. Thus, pressure-driven enhancement was responsible for remarkable Conversely, could not be effectively suppressed owing lack interactions, leading absence CPL. Our work gives a insight into intrinsic structure-property relationship noncovalent ultrahigh-color-purity behavior perovskites.

Language: Английский

Citations

0
Pressure-Induced Changes in the Phase Distribution and Carrier Dynamics of Quasi-Two-Dimensional Ruddlesden–Popper Perovskites DOI
Hai Hu,

Guangming Niu,

Jutao Jiang

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(32), P. 8142 - 8150

Published: Aug. 2, 2024

Quasi-two-dimensional (quasi-2D) perovskites hold significant potential for diverse design strategies due to their tunable structures, exceptional optical properties, and environmental stability. Due the complexity of structure carrier dynamics, characterization methods such as photoluminescence absorption spectroscopy can observe but cannot precisely distinguish or identify phase distribution within quasi-2D perovskite films correlate phases with dynamics. In this study, we used pressure modulate intralayer interlayer structures (PEA)

Language: Английский

Citations

0
Structure Evolution and Optical Tuning of One-Dimensional Post-perovskite (TDMP)PbBr4 under High Pressure DOI

Ruijing Fu,

Junpeng Gao,

Lingrui Wang

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(39), P. 18276 - 18284

Published: Sept. 19, 2024

Optimizing the structure and tuning optical properties in low-dimensional organic-inorganic halide perovskites are crucial to practical applications for stable solid-state lighting. Herein, we performed high-pressure investigations on one-dimensional (1D) postperovskite (TDMP)PbBr

Language: Английский

Citations

0
Modulation of the vibrational and optical properties in β copper phthalocyanine under compression DOI Creative Commons

Miaomiao Du,

Shengyi Wang,

Shengchun Fu

et al.

Journal of Applied Physics, Journal Year: 2024, Volume and Issue: 136(15)

Published: Oct. 15, 2024

Because copper phthalocyanine (CuPc) has significant uses in industrial devices and pigments, it is a subject of great interest basic scientific research. Studying adjusting its photoelectric qualities, particular, drawn much attention. In this work, situ high-pressure experiments were used to investigate detail the vibrational optical properties ground-state β-CuPc up 13 GPa. Both micro-Raman ultraviolet visible light (UV–vis) absorption measurements revealed phase transition occurring around 3 Notably, macrocycle breathing vibration was found have remarkable characteristic first weakening then strengthening response pressure-induced transition. The UV–vis data that bandgaps corresponding two edges decrease gradually with increasing pressure, one edge disappearing entirely above 11 Furthermore, blue can be adjusted dark green at 10 GPa ultimately black due merging bands redshifts high pressure. This work improves our understanding CuPc's intrinsic characteristics under harsh settings manipulates color effectively.

Language: Английский

Citations

0
Rational Design of Single‐Component White‐Light Emissive Molecular Copper Clusters DOI Creative Commons

Alain Rocheteau,

Lanig Lemeur,

Marie Cordier

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 13(2)

Published: Nov. 21, 2024

Abstract The development of low‐cost and earth‐abundant phosphors for substituting expensive noble metals toxic lead materials is currently major importance sustainable solid‐state lighting technologies. Hybrid copper halide are receiving considerable attention due to their unique diverse structural photophysical properties combined low cost toxicity. This article reports the rational design iodide compounds developing single‐component white light emitters. By a ligand engineering strategy, energy layout molecular clusters can be adjusted variation in relative intensity two emission bands obtained, enabling emitted. Temperature dependence this dual‐emission feature also allows high contrast luminescence thermochromism. Thanks good solubility properties, studied have been successfully incorporated within organic polymer leading with processability suitable application development. Therefore, potential applicability these composite has demonstrated various fields as ratiometric thermometry, emitters phosphor‐converted white‐light emitting diodes, ink anticounterfeiting properties. study highlights power strategy develop multifunctional based on light‐emitting materials.

Language: Английский

Citations

0