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复旦学报（自然科学版） 2007年第5期46卷 858-页

作者： Jianhua Wu, Bing Yan(Deparment of Chemistry,Tongji University,Shanghai 200092,China) Deparment of Chemistry Tongji University Shanghai 200092

1 Results The size of nanoscale rare earth luminescent materials is often smaller than that of the excitement or emission wavelength,and it has amazing surface state density. Therefore,it shows a lot of new luminescent phenomena such as the shift of CTS,the broadening of emission peaks,the variation of fluorescent lifetimes and quantum efficiency,and the increase of quenching *** is not only of academic interest but also of technological importance for advanced phosphor applications to rese...

关键词： nanoscale rare earth luminescent materials

Identification of surface oxygen vacancy-related phonon–plasmon coupling in TiO_2 single crystal

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Chinese Physics B 2016年第12期25卷 394-397页

作者：郭俊宏李廷会胡芳仁刘力哲 School of Optoelectronic Engineering and Grenberg Research Center Nanjing University of Posts and Telecommunicates College of Electronic Engineering Guangxi Normal University Nanjing National Laboratory of Microstructures and Department of Physics Nanjing University

Oxygen vacancies （OVs） play a critical role in the physical properties and applications of titanium dioxide nanos- tructures, which are widely used in electrochemistry and photo catalysis nowadays. In this work, OVs were artificially introduced in the surface of a pure TiO2 single crystal by pulsed laser irradiation. Raman spectra showed that the intensity of Eg mode was enhanced. Theoretical calculations disclose that this was caused by the strong coupling effect between the phonon vibration and plasmon induced by the OVs-related surface deformation, and good agreement was achieved between the experiments and theory.

关键词： luminescent materials Raman scattering oxygen vacancies

Patterned phosphor-in-glass films with efficient thermal management for high-power laser projection displays

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Journal of Advanced Ceramics 2023年第11期12卷 2075-2086页

作者： Zezhong Yang Song Zheng Guoyu Xi Tao Pang Shaoxiong Wang Qingying Ye Bin Zhuang Daqin Chen College of Physics and Energy Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFujian Normal UniversityFuzhou 350117China Huzhou Key Laboratory of materials for Energy Conversion and Storage College of ScienceHuzhou UniversityHuzhou 313000China Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting materials and Engineering Fujian Normal UniversityFuzhou 350117China Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage Fujian Normal UniversityFuzhou 350117China

Recently,high-performance color converters excitable by blue laser diode(LD)have sprung up for projection ***,the thermal accumulation effect of the color converters is a non-negligible problem under high-power LD ***,we developed novel opto-functional composites(patterned CaAlSiN3:Eu^(2+)phosphor-in-glass film–Y_(3)Al_(5)O_(12):Ce^(3+)phosphor-in-glass film@Al_(2)O_(3)plate with aluminum"heat sink")via a thermal management methodology of combining"phosphor wheel"and"heat sink"for a lighting source of highpower laser projection *** new composite design makes it effective to transport generated thermal phonons away to reduce the thermal ionization process,and to yield stable and high-quality white light with brightness of 4510 lm@43 W,luminous efficacy of 105 lm/W,correlated color temperature of 3541 K,and color rendering index of ***,the phosphor-in-glass film-converted laser projection system was also successfully designed,showing a more vivid color effect compared to a traditional LED-based *** work emphasizes the importance of the thermal management upon high-power laser irradiation,and hopefully facilitates the development of a new LD-driven lighting source for high-power laser projection displays.

关键词： phosphor-in-glass(PiG)film laser-driven lighting luminescent materials heat dissipation glass ceramics

Improvement of water resistance of long afterglow SrAl_2O_4: Dy, Eu phosphor by coating with SiO_2 film

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Rare Metals 2002年第2期21卷 152-155页

作者： ZHANG Junying, CHEN Qingming, LIN Yuanhua, and ZHANG ZhongtaiState Key Laboratory of New Ceramics and Fine Processing, Department of materials Science and Engineering, Tsinghua University,Beijing 100084, China Department of materials Science and Engineering Tsinghua University State Key Laboratory of New Ceramics and Fine Processing 北京 100084

The long afterglow SrAl_2O_4: Dy, Eu phosphor is liable tohydrolyze in water with deterioration of the lumin- escent ***_2O_4: Dy, Eu phosphors were therefore heated at 60-90 deg. C inTEOS sol to form a surface gel and then heat-treated at 400 deg. C toobtain SiO_2 coated phosphors. Observation by ?Transmission ElectronMicroscope (TE) and X- ray photoelectron spectroscopy (XPS) showsthat a thin silica film forms on the surface of the phosphors. Thecoating procedure can be illustrated by a four-step process and thetransparent silica film can suppress the hydrolysis process, so thatthe luminescent properties of the phosphors are unimpaired or evenbetter.

关键词： phosphors coating luminescent materials SrAl_2O_4

A stimuli-responsive pillar[5]arene-based hybrid material with enhanced tunable multicolor luminescence and ion-sensing ability

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National Science Review 2021年第6期8卷 60-69页

作者： Xin-Yue Lou Nan Song Ying-Wei Yang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)College of ChemistryJilin University

Tunable luminescent materials are becoming more and more important owing to their broad application potential in various fields. Here we construct a pillar[5]arene-based hybrid material with stimuli-responsive luminescent properties and ion-sensing abilities from a pyridine-modified conjugated pillar[5]arene and a planar chromophore oligo(phenylenevinylene) upon coordination of Cd(II) metal cores. This new material not only shows an optimized luminescence due to the minimized π–π stacking and efficient charge transfer properties benefitting from the existence of pillar[5]arene rings, but also exhibits tunable multicolor emission induced by different external stimuli including solvent, ions and acid, indicating great application potential as a fluorescent sensory material, especially for Fe3+. With this pillar[5]arene-based dual-ligand hybrid material, valid optimization and regulation on the fluorescence of the original chromophore have been achieved, which demonstrates a plausible strategy for the design of tunable solid-state luminescent materials and also a prototypical model for the effective regulation of fluorescent properties of planarπ systems using synthetic macrocycle-based building blocks.

关键词： aggregation-induced emission supramolecular chemistry luminescent materials pillararenes macrocycles

Si/Al order and texture orientation optimization of red-emitting Mg_(2)Al_(4)Si_(5)O_(18):Eu^(2+)ceramics for laser phosphor display

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Journal of Materiomics 2024年第5期10卷 1137-1143页

作者： Weibin Chen Yuzhen Wang Gaochao Liu Yongsheng Sun Zhiguo Xia State Key Laboratory of luminescent materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesGuangdong Engineering Technology Research and Development Centre of Special Optical Fiber Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510641China School of Physics and Optoelectronics South China University of TechnologyGuangzhou510641China

Laser phosphor display technology plays an important role in advanced display projection;however,it is a challenge in maintaining excellent color accuracy under high brightness due to the lack of red ***,red-emitting Mg_(2)Al_(4)Si_(5)O_(18):Eu^(2+)ceramics as the phosphor wheel have been optimized in chemical compositions and texture *** textured Mg_(2)Al_(4)Si_(5)O_(18):Eu^(2+)ceramics have high transparency and spot limiting ability,accordingly,the ceramic wheel outputs 1,184 lm of ultra-bright red light under 50 W/mm^(2) laser power ***,the red spectral utilization(over 600 nm)of textured Mg_(2)Al_(4)Si_(5)O_(18):Eu^(2+)ceramics is 2.17 times that of traditional Y_(3)Al_(5)O_(12):Ce^(3+)phosphor *** red-emitting textured Mg_(2)Al_(4)Si_(5)O_(18):Eu^(2+)cordierite ceramic herein enables an improved light-color saturation experience,and it is potential in the next-generation laser phosphor display applications.

关键词： luminescent materials Rare earth materials Textured ceramic Red emission Laser phosphor display

Recent advances in 3D-printable aggregation-induced emission materials

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Materials Futures

materials Futures 2024年第4期3卷 22-40页

作者： Mingtao Zhang Yu Li Guangmeng Ma Fawei Guo Haixin Wu Han Wu Qingxin Jin Xin Luo Chunyi Luo Jiaqi Li Yu Long State Key Laboratory of Featured Metal materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004People’s Republic of China Institute of Laser Intelligent Manufacturing and Precision Processing School of Mechanical EngineeringGuangxi UniversityNanning 530004People’s Republic of China

Aggregation-induced emission(AIE)materials exhibit remarkable emission properties in the aggregated or solid states,offering numerous advantages such as high quantum yield,excellent photostability,and low background *** characteristics have led to their widespread application in optoelectronic devices,bio-detection markers,chemical sensing,and stimuli-responsive applications among *** contrast to traditional manufacturing processes,3D printing(3DP)enables rapid prototyping and large-scale customization with excellent flexibility in manufacturing techniques and material *** combination of AIE materials with 3DP can provide new strategies for fabricating materials and devices with complex ***,3DP is an ideal choice for processing AIE organic luminescent ***,3DP of AIE materials is still in the early stages of development and is facing many challenges including limited printable AIE materials,poor printing functionalities and limited application *** review aims to summarize the significant achievements in the field of 3DP of AIE ***,different types of AIE materials for 3DP are studied,and the factors that affect the printing effect and the luminescence mechanism are ***,the latest advancements made in various application domains using 3D printed AIE materials are ***,the existing challenges of this emerging field are discussed while the future prospects are prospected.

关键词： 3D printing aggregation-induced emission luminescent materials process monitoring

Aggregation-induced emission systems involving supramolecular assembly

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Aggregate

Aggregate 2020年第1期1卷 19-30页

作者： Xin-Yue Lou Ying-Wei Yang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture ChemistryCollege of ChemistryJilin UniversityChangchunP.R.China

Aggregation-induced emission(AIE),as an exciting photophysical phenomenon,has been regarded as one frontier research topic within both ranges of molecular luminescence and materials science over the last two *** controllable molecular ensembles with particular morphologies and tunable functions can be elegantly constructed in the realm of supramolecular chemistry,the integration of supramolecular assembly and AIE systems can expectedly bring about luminescent materials with tunable emission and tailorable well-ordered *** this review,we will provide a summary of the creation and working mechanisms of AIE systems involving supramolecular systems that are driven by different supramolecular driving forces including hydrogen bonding,host−guest interactions,metal coordination,and π-π *** morphological and photoluminescent features of these AIE-active supramolecular assemblies will be elucidated,and the regulated fluorescence properties of the AIEgens induced by the assembling-disassembling processes will be discussed in detail.

关键词： aggregation-induced emission fluorescence enhancement luminescent materials supramolecular assembly synthetic macrocycles

Four organic crystals displaying distinctively different emission colors based on an ESIPT-active organic molecule

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Chinese Chemical Letters 2018年第10期29卷 1537-1540页

作者： Hao Liu Xiao Cheng Zhengyi Bian Kaiqi Ye Hongyu Zhang State Key Laboratory of Supramolecular Structure and materials College of ChemistryJilin University MoE Key Laboratory of Macromolecule Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang University

Four crystals A–D based on a structurally simple ESIPT-active molecule 4MPP were obtained by subtly controlling the crystallization conditions. Notably, crystals A and C display single emission bands, which correspond to the keto＊（K＊） and enol＊（E＊） emission, respectively. B and D exhibit dual emission with different proportion of E＊/K＊ emissions while D sucessfully achieves white emssion. The distinctively different emission properties of A–D is mainly because of the change in crystal structures. In addition, A displays amplified spontaneous emission, which indicates its potential as single crystal lasers.

关键词： Polymorph ESIPT luminescent materials Fluorescent single crystal Amplified spontaneous emission