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Nano Research 2017年第5期10卷 1449-1470页

作者： Mengxia Shen changting wei Kelong Ai Lehui Lu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China University of Chinese Academy of Sciences Beijing 100039 China

Accelerating the rate-limiting oxygen reduction reaction （ORR） at the cathode remains the foremost issue for the commercialization of fuel cells. Transition metal-nitrogen-carbon （M-N/C, M = Fe, Co, etc.） nanostructures are the most promising class of non-precious metal catalysts （NPMCs） with satisfactory activities and stabilities in practical fuel cell applications. However, the long-debated nature of the active sites and the elusive structure-performance correlation impede further developments of M-N/C materials. In this review, we present recent endeavors to elucidate the actual structures of active sites by adopting a variety of physicochemical techniques that may provide a profound mechanistic understanding of M-N/C catalysts. Then, we focus on the spectacular progress in structural optimization strategies for M-N/C materials with tailored precursor architectures and modified synthetic routes for controlling the structural uniformity and maximizing the number of active sites in catalytic materials. The recognition of the right active centers and site-specific engineering of the nanostructures provides future directions for designing advantageous M-N/C catalysts.

关键词： oxygen reduction reaction,catalyst,metal-nitrogen-carbon(M-N/C M = Fe Co etc.),fuel cell

喷墨打印量子点电致发光显示关键材料与技术的前世与今生

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发光学报 2024年第9期45卷 1410-1430页

作者：刘辰魏昌庭罗鑫孙智国徐勃曾海波南京理工大学材料科学与工程学院江苏省量子点显示工程研究中心新型显示材料与器件工信部重点实验室纳米光电材料研究所江苏南京210094 安顺学院化学化工学院贵州安顺561000

胶体半导体量子点因其独特的纳米级传输效应、自发光特性以及与大面积工业印刷工艺兼容的流变学属性而备受学术界和工业界的关注。喷墨打印作为一种新兴技术,有望实现新一代可印刷、大面积、高性能图案化量子点发光二极管(QLED)。然而,... 详细信息

胶体半导体量子点因其独特的纳米级传输效应、自发光特性以及与大面积工业印刷工艺兼容的流变学属性而备受学术界和工业界的关注。喷墨打印作为一种新兴技术,有望实现新一代可印刷、大面积、高性能图案化量子点发光二极管(QLED)。然而,目前喷墨打印QLED的制备过程存在墨水配方不当造成的界面侵蚀以及成膜后发光效率降低等问题,导致其性能与旋涂器件存在较大差距。本文首先概述了量子点显示技术的基本概念及发展现状,分析了三种喷墨打印技术的分类、原理及其优缺点。然后介绍了含镉、含铅和无铅无镉三类量子点,分析了它们在喷墨打印QLED中的研究进展,接着重点介绍了利用喷墨打印实现高性能QLED的几种典型策略,最后展望了喷墨打印QLED的发展趋势和美好前景。

关键词：量子点喷墨印刷电致发光二极管墨水工程表界面调控

聚乙烯亚胺包覆氧化锌电子传输材料的制备及其对有机光伏电池空气和紫外稳定性的增强效应

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发光学报 2024年第7期45卷 1145-1155页

作者：宋海涛王宇杨建胜张小科王忠强王华杨永珍魏昌庭闫翎鹏太原理工大学新材料界面科学与工程教育部重点实验室山西太原030024 太原理工大学材料科学与工程学院山西太原030024 南京理工大学材料科学与工程学院新型显示材料与器件工信部重点实验室江苏南京210094

活性层与电极之间的界面层材料对有机太阳能电池(OSCs)至关重要,它直接影响器件的性能和稳定运行。作为一种广泛应用的电子传输材料,氧化锌(ZnO)纳米颗粒(NPs)较高的表面缺陷态易在表面吸附水氧,严重影响OSCs的效率和稳定性。因此,本文... 详细信息

活性层与电极之间的界面层材料对有机太阳能电池(OSCs)至关重要,它直接影响器件的性能和稳定运行。作为一种广泛应用的电子传输材料,氧化锌(ZnO)纳米颗粒(NPs)较高的表面缺陷态易在表面吸附水氧,严重影响OSCs的效率和稳定性。因此,本文设计了一种既能钝化表面缺陷又能调节能级的聚乙烯亚胺(PEI)包覆ZnO NPs的协同策略,采用水热法成功合成了ZnO@PEI NPs,并将其作为电子传输层(ETL)应用于基于PM6∶BO-4Cl∶PC61BM的OSCs中。结果表明,使用ZnO@PEINPs作为ETL制备的光伏器件的光电转换效率(PCE)略有下降,但由于包覆的PEI钝化了ZnO表面缺陷,ZnO@PEI NPs器件展现出更好的空气和紫外稳定性。本研究提出了一个构建多功能、高稳定性ETL的有效策略,为实现高稳定OSCs提供了一条适用的新途径。

关键词：有机太阳能电池电子传输层氧化锌纳米颗粒聚乙烯亚胺空气稳定性紫外稳定性

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Synthesis and red electroluminescence of a dimesityl-functionalized bistetracene

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Chinese Chemical Letters 2018年第2期29卷 293-296页

作者： Guixia Zhai changting wei Shulian Chen Xiaomeng Yin Jinchong Xiao Wenming Su College of Chemistry and Environmental Science Key Laboratory of Chemical Biology of Hebei Province Hebei University Printalbe Electronics Research Centre Suzhou Institute of Nanotech and Nano-bionics Chinese Academy of Sciences MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics & Nanomaterials School of Materials Science and EngineeringNanjing University of Science and Technology

A novel dimesityl-decorated bistetracene derivative 8,16-dimesityltetraceno[2,1,12,11-opqra]tetracene（DMTA） has been synthesized and characterized. Its single crystal analysis demonstrates that the parent bistetracene backbone is almost in a plane without any intermolecular 7 r-stacking interaction. DMTA exhibited the low-energy absorption at 560/607 nm and emission spectra at 617/663 nm, *** fabricated device based on DMTA doping into 2,6-bis（3-（9 H-carbazol-9-yl）phenyl）pyridine（1 %） as an emitter present a maximum brightness of 632 cd/m^2 at 14.7 V with the CIE coordinate of（0.623,0.349）.

关键词： Synthesis Polycyclic aromatic hydrocarbons Single crystal Photophysical property Electroluminescence

Stabilizing electroluminescence color of blue perovskite LEDs via amine group doping

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Science Bulletin 2021年第21期66卷 2189-2198,M0004页

作者： Fengjuan Zhang Jizhong Song Bo Cai Xi Chen changting wei Tao Fang Haibo Zeng School of Materials Science and Engineering MIIT Key Laboratory of Advanced Display Materials and DevicesInstitute of Optoelectronics&NanomaterialsNanjing University of Science and TechnologyNanjing 210094China

Voltage loading-induced change in the electroluminescence(EL)wavelength of mixed halide perovskite light-emitting diodes(PeLEDs),so-called color-shift,has become an inevitable phenomenon,which is seriously unfavorable to their applications in lighting and ***,we achieve color-stable blue PeLEDs via a hydrogen-bonded amine-group doping *** guanidine(GA)or formamidinium(FA)as amine-group(-NH_(2))doping source for CsPbBr_(x)Cl_(3-x)quantum dots(QDs),experimental and theoretical results reveal that the strong N-H…X(X=Br/Cl)bonding can be produced between-NH_(2)dopants and Pb-X lattices,thereby increasing the migration barrier of halide ***,color-stable sky-blue devices were realized with emission peaks fixed at 490.5(GA)and 492.5(FA)nm without any obvious shift as the voltage increases,in sharp contrast devices without N-H…X producing a 15 nm red-shift from 487 to 502 *** only that,maximum external quantum efficiency is improved to 3.02%and 4.14%from the initial 1.3%.This finding offers a convenient boulevard to achieve color-stable PeLEDs with high efficiency.

关键词： Light-emitting diodes Perovskites Quantum dots Hydrogen bond Amine-group doping Color stability

High performance inkjet-printed QLEDs with 18.3% EQE: improving interfacial contact by novel halogen-free binary solvent system

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Nano Research 2021年第11期14卷 4125-4131页

作者： Ming Chen Liming Xie changting wei Yuan-Qiu-Qiang Yi Xiaolian Chen Jian Yang Jinyong Zhuang Fushan Li Wenming Su Zheng Cui Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China Guangdong Juhua Printed Display Technol Company Ltd. Guangzhou510700China Institute of Optoelectronic Technology Fuzhou UniversityFuzhou350002China

Poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt(4,4′-(N-(4-butylphenyl))](TFB),one of the most popular and widely used hole-transport layer(HTL)materials,has been successfully applied in high performance spin-coated quantum dots-based light-emitting diodes(QLEDs)due to its suitable energy level and high ***,there are still many challenging issues in inkjet-printed QLED devices when using TFB as *** normally suffers from the interlayer mixing and erosion,and low surface energy against the good film ***,a novel environment-friendly binary solvent system was established for formulating quantum dot(QD)inks,which is based on mixing halogen-free alkane solvents of decalin and *** optimum volume ratio for the mixture of decalin and n-tridecane was found to be 7:3,at which a stable ink jetting flow and coffee-ring free QD films could be *** research the influence of substrate surface on the formation of inkjet-printed QD films,TFB was annealed at different temperatures,and the optimum annealing temperature was found to enable high quality inkjet-printed QD ***-printed red QLED was ultimately manufactured.A maximum 18.3%of external quantum efficiency(EQE)was achieved,reaching 93%of the spin-coated QLED,which is the best reported high efficiency inkjet-printed red QLEDs to *** addition,the inkjet-printed QLED achieved similar T75 operational lifetime(27 h)as compared to the spin-coated reference QLED(28 h)at 2,000 cd·m−*** work demonstrated that the novel orthogonal halogen-free alkane co-solvents can improve the interfacial contact and facilitate high-performance inkjet printing QLEDs with high EQE and stability.

关键词： quantum dots quantum dots light-emitting diodes(QLEDs) inkjet printing halogen-free inks contact interface

Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

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Light(Science & Applications) 2020年第1期9卷 441-449页

作者： Qingsong Shan changting wei Yan Jiang Jizhong Song Yousheng Zou Leimeng Xu Tao Fang Tiantian Wang Yuhui Dong Jiaxin Liu Boning Han Fengjuan Zhang Jiawei Chen Yongjin Wang Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics&NanomaterialsSchool of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Peter Grünberg Research Center Laboratory of Broadband Wireless Communication and Sensor Network TechnologyMinistry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China

Light fidelity(LiFi),which is emerging as a compelling technology paradigm shifting the common means of highcapacity wireless communication technologies,requires wearable and full-duplex compact design because of its great significance in smart wearables as well as the‘Internet of Things’.However,the construction of the key component of wearable full-duplex LiFi,light-emitting/detecting bifunctional fibres,is still challenging because of the conflicting process between carrier separation and recombination,as well as the highly dynamic film-forming ***,we demonstrate light-emitting/detecting bifunctional fibres enabled by perovskite QDs with hybrid *** hybrid perovskite inks endow fibres with super-smooth QD ***,combined with the small exciton binding energy and high carrier mobility of perovskite QDs,enables successful integration of electroluminescence and photodetection into *** bifunctional fibres possess the narrowest electroluminescence full width at half maximum of ~19 nm and,more importantly,the capability for simultaneously transmitting and receiving *** successful fabrication of narrow emission full-duplex LiFi fibres paves the way for the fabrication and integration of low crosstalk interoperable smart wearables.

关键词： process perovskite functional

Intrinsically Viscoelastic Supramolecular Conjugated Polymer toward Suppressing Coffee-Ring Effect

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CCS Chemistry 2022年第11期4卷 3529-3539页

作者： Yamin Han Lubing Bai Xiang An Man Xu Chuanxin wei Zongqiong Lin Mengna Yu Jinyi Lin Lili Sun Ning Sun changting wei Linghai Xie Xuehua Ding Qi wei Chengrong Yin Chenghui Li Wenming Su wei Huang Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816 Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)Xi’an 710072 State Key Laboratory of Organic Electronics and Information Displays Institute of Advanced Materials(IAM)Nanjing University of Posts&TelecommunicationsNanjing 210023 State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing National Laboratory of MicrostructuresNanjing UniversityNanjing 210093 Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouJiangsu 215123

The rational molecular design of light-emitting conjugated polymers that inherently suppress the ubiquitous coffee-ring effect(CRE)is a great challenge and the critical bottleneck for printing ***,we describe a supramolecular route to construct an intrinsically viscoelastic rigid conjugated polymer(RCP)(PHDPF-Cz)toward avoiding the CRE without sacrificing optoelectronic ***π-πstacking interactions derived fromthe pendant carbazole(Cz)units enable PHDPF-Cz to self-assemble into criss-cross nanofibers and endow its solutionwith great ***,a high-quality and continuous PHDPFCz film was obtained by impeding the transport of aggregates to the droplet edge due to outward capillary flow during evaporation,in sharp contrast to the random aggregate migration and rapid precipitation generated fromthe controlled poly[4-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]-co-[5-(6-(9H-diphenylaniline-9-yl)hexyloxy)-9,9-diphenylfluorene]and poly(9,9-dioctylfluorene)***,an efficient random laser is also achieved based on these cross-linked films with ultrastable single-chain excitonic behavior,confirming the effectiveness of our design strategy.

关键词： coffee-ring effect rigid conjugated polymer supramolecular criss-cross nanofibers optoelectronic properties

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我国高等教育布局与区域经济相关性研究

国家教育行政学院学报 2010年第12期 28-33页

作者：李硕豪魏昌廷兰州大学教育学院甘肃兰州730000

我国高等教育大众化进程以来,高等教育布局在规模扩张的同时发生了质变。本文分析了我国高等教育布局的现状、以及高等教育布局与区域经济和区域人口的关系。通过调查我们发现,近年来我国高等教育的布局结构整体上得到了优化,基本上与... 详细信息

我国高等教育大众化进程以来,高等教育布局在规模扩张的同时发生了质变。本文分析了我国高等教育布局的现状、以及高等教育布局与区域经济和区域人口的关系。通过调查我们发现,近年来我国高等教育的布局结构整体上得到了优化,基本上与区域经济发展保持了较高的适应性;区域人口逐渐成为影响高等教育布局结构的关键性因素。但是从区域经济发展和高等教育资源分配的角度看,我国高等教育布局结构却呈现出外部均衡、内部非均衡;整体均衡、区域非均衡的现状。

关键词：高等教育布局结构区域经济相关性

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吹风气回收装置运行总结

化肥工业 2000年第5期27卷 51-51,53页

作者：魏长亭安徽三星化工集团化肥厂涡阳233610

介绍了φ360 0煤气炉吹风气回收工艺运行情况及所取得的经济效益。

关键词：吹风气回收运行废气回收装置氮肥厂