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Highly efficient and photothermally stable CDs@ZIF-8 for laser illumination

Chinese Chemical Letters 2024年第10期35卷 299-303页

作者： Zhi Wang lingpeng yan Yelin Hao Jingxia Zheng Yongzhen yang Xuguang Liu Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology College of Materials Science and Engineering Taiyuan University of Technology

Carbon dots(CDs), as a solid-state phosphor, have great potential for application in a new solid-state lighting device—laser diode(LD). For high efficiency LD devices, both high photoluminescence quantum yield(PLQY) and high photothermal stability of CDs are essential. Herein, yellow CDs@ZIF-8 composites with high structural stability were prepared by encapsulating CDs in zeolitic imidazolate framework-8(ZIF-8) through electrostatic adsorption between CDs and ZIF-8, in which CDs with amino groups on the surface were used as luminescent feeders and ZIF-8 was used as a protective layer matrix. The asprepared CDs@ZIF-8 not only possess a high PLQY of up to 81.17%, but also maintain a high fluorescence intensity of 100% and 80% under long-term illumination(60 min) and high temperature(478 K), respectively. The hydrogen bonding between CDs and ZIF-8 in the encapsulated structure can enhance the degree of electron cloud delocalization, which can improve the PLQY of CDs@ZIF-8. Meanwhile, CDs@ZIF-8has high photothermal stability due to the binding effect of ZIF-8 on CDs and high thermal stability of ZIF-8. The white LD device, fabricated from CDs@ZIF-8 as a phosphor in combination with 450 nm blue LD, has a color coordinate of(0.37, 0.33), a color temperature of 3762 K, and a high color rendering index of 86. This study provides a new strategy for the construction of solid-state phosphors with high PLQY and high photothermal performance.

关键词： Carbon dots High photoluminescence quantum yield High photothermal stability Laser illumination Metal-organic frameworks

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石墨烯气凝胶复合材料在电化学储能中的应用研究进展

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复合材料学报 2024年第4期41卷 1694-1711页

作者：惠晨柯闫翎鹏杨未鹏崔晋超杨永珍苏庆梅杜高辉刘旭光许并社太原理工大学新材料界面科学与工程教育部重点实验室太原030024 陕西科技大学材料原子•分子材料研究所西安710021 太原理工大学材料科学与工程学院太原030024 山西浙大新材料与化工研究院太原030032

石墨烯气凝胶作为一种内部互连的三维框架体,在微观和宏观尺度上具有突出的维度特性,成为各种零维、一维、二维和三维材料的理想宿主。其高导电性、高比表面积及高结构稳定性等特点令石墨烯气凝胶在储能领域得到了广泛的应用,特别是在... 详细信息

石墨烯气凝胶作为一种内部互连的三维框架体,在微观和宏观尺度上具有突出的维度特性,成为各种零维、一维、二维和三维材料的理想宿主。其高导电性、高比表面积及高结构稳定性等特点令石墨烯气凝胶在储能领域得到了广泛的应用,特别是在高比容量金属离子电池负极和超级电容器电极等领域。首先,本文对石墨烯前体及气凝胶的处理策略进行整理,介绍当前不同处理方式对石墨烯前体及气凝胶成型影响。其次,根据储能机制的不同,介绍石墨烯气凝胶复合材料在主流储能器件中的改性应用及性能表现。最后,对电化学储能用石墨烯气凝胶复合材料的研究进展进行总结,指出当前存在的挑战并展望未来的研究方向。

关键词：石墨烯气凝胶储能材料复合材料储能应用电化学

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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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Deposition of Ag Nanoparticles on Carbon Microspheres Surface：Evaluation of Structures,Electrochemical and Optical Properties

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Journal of Wuhan University of Technology(Materials Science) 2016年第4期31卷 743-749页

作者：杨维佳 HAO Yamin yan lingpeng 杨永珍陈永康 LIU Xuguang XU Bingshe Key Laboratory of lnterface Science and Engineering in Advanced Materials Taiyuan University of Technology Taiyuan 030024 China Research Center on Advanced Material Science and Technology Taiyuan University of Technology Taiyuan 030024 China College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China

A hybrid material of carbon microspheres（CMSs） with Ag decoration（Ag/CMSs） was ***（3-hexylthiophene）：Ag/CMSs composite film was prepared by *** electron microscopy,transmission electron microscopy,Fourier transform infrared spectrometry,X-ray diffraction,thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies,structures,thermal properties and energy levels of Ag/*** optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent *** results indicate that silver nanoparticles（AgNPs,d = 10-20 nm） are distributed on the surface of *** and HOMO energy levels of Ag/CMSs are-3.97 and-5.52 e V,below the vacuum energy level,respectively,indicating that it is feasible to use Ag/CMSs as an electron *** NPs are blended into the active layer to trigger localized surface plasmon resonance,and consequently enhance light *** coupling of surface plasmons and excitons increased the probability of exciton dissociation.

关键词： ultraviolet silver voltammetry plasmon visible consequently exciton dissociation blended localized

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Interfacial degradation mechanism of the polymer:fullerene bis-adduct solar cells and their stability improvement

Interfacial degradation mechanism of the polymer:fullerene b...

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： lingpeng yan Huimin Gu Zerui Li Yongzhen yang Chang-Qi Ma Printed Electronics Research Center Suzhou Institute of Nano-Tech and Nano-Bionics(CAS)Chinese Academy of Sciences Institute of New Carbon Materials Taiyuan University of Technology Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of Technology Printed Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences(CAS)

Although fullerene bis-adducts have been widely used in tandem and ternary polymer solar cells for their high LUMO energy level and good performance,the degradation behavior of this class of solar cells has not been well *** this paper,performance and stability of the solar cells based on P3HT:fullerene bis-adducts,including bis-PCBM and ICBA,were systematically *** from the P3HT:PCBM cell,these bis-adduct based cells showed fast open circuit(VOC) and fill factor(FF) *** investigating the degradation behavior of P3 HT:fullerene bis-adduct solar cells,we revealed that the interfacial degradation between P3HT and MoO is the main reason for fast VOC and FF decays,which can be suppressed by inserting a thin C layer or doping with *** work gives a detailed understanding of the interfacial degradation of PSCs and provides effective solutions,which has important guiding significance for improving the stability of different types of polymer solar cells.

关键词： polymer solar cell fullerene bis-adduct stability

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Influence of Molecular Weight of Polymers on Stability of Polymer Solar Cells

Influence of Molecular Weight of Polymers on Stability of Po...

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第六届新型太阳能电池材料科学与技术学术研讨会

作者： Huimin Gu Yaling Wang lingpeng yan Xuguang Liu Yongzhen yang Chang-Qi Ma Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of Technology Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicChinese Academy of Sciences (CAS)

Polymer solar cells have become a research hotspot in the field of solar energy applications in recent years due to their advantages of light weight, roll-to-roll bending and simple processing technology. At present, with the continuous development of high performance organic semiconductor materials, the photoelectric conversion efficiency of polymer solar cell has exceed 15%. However, stability of polymer solar cell is far from satisfactory, which restricts the commercial application of polymer solar cells. In this contribution, polymer solar cells based on P3HT with different molecular weight as the donor and PCBM as the acceptor were fabricated and tested. Experiment results showed that when the molecular weight of P3HT is 10 k-20 k, the stability of the cells decreases with the increase of molecular weight, while solar cell stability increases again with the increase of P3HT molecular weight when it is higher than 20 k. The main reason for this phenomenon is the difference in surface morphology of the active layer, which leads to different redox reaction rate between the P3HT and MoO. Detailed mechanism on the influence of molecular weight on stability will be discussed.

关键词： PSC Stability Molecular weight XPS

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Recent progress in organic solar cells(PartⅠmaterial science)

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Science China Chemistry 2022年第8期65卷 224-268页

作者： Yahui Liu Bowen Liu Chang-Qi Ma Fei Huang Guitao Feng Hongzheng Chen Jianhui Hou lingpeng yan Qingya Wei Qun Luo Qinye Bao Wei Ma Wei Liu Weiwei Li Xiangjian Wan Xiaotian Hu yanchun Han Yaowen Li Yinhua Zhou Yingping Zou Yiwang Chen Yongfang Li Yongsheng Chen Zheng Tang Zhicheng Hu Zhi-Guo Zhang Zhishan Bo College of Textiles&Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao 266071China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Physics and Electronic Science East China Normal UniversityShanghai 200241China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory and Institute of Elemento-Organic Chemistry Key Laboratory of Functional Polymer MaterialsCollege of ChemistryNankai UniversityTianjin 300071China College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Material

During past several years,the photovoltaic performances of organic solar cells(OSCs)have achieved rapid progress with power conversion efficiencies(PCEs)over 18%,demonstrating a great practical application *** development of material science including conjugated polymer donors,oligomer-like organic molecule donors,fused and nonfused ring acceptors,polymer acceptors,single-component organic solar cells and water/alcohol soluble interface materials are the key research topics in OSC ***,the recent progress of these aspects is systematically ***,the current problems and future development are also discussed.

关键词： organic solar cells power conversion efficiency photovoltaic materials polymer solar cells

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有机太阳能电池热失效机制及三元共混提升其热稳定性研究进展

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化学学报 2023年第2期81卷 131-145页

作者：查汉房进闫翎鹏杨永珍马昌期太原理工大学材料科学与工程学院太原030024 中国科学院苏州纳米技术与纳米仿生研究所创新实验室&印刷电子研究中心苏州215123 太原理工大学新材料界面科学与工程教育部重点实验室太原030024 山西浙大新材料与化工研究院太原030032

有机太阳能电池(Organic solar cells,OSCs)作为一种新兴高效太阳能电池,近年来得到飞速发展.目前OSCs的光电转换效率(Power conversion efficiency,PCE)已经达到19%以上,初见商业化应用曙光.但其稳定性方面尚未发展成熟,尤其在制备和... 详细信息

有机太阳能电池(Organic solar cells,OSCs)作为一种新兴高效太阳能电池,近年来得到飞速发展.目前OSCs的光电转换效率(Power conversion efficiency,PCE)已经达到19%以上,初见商业化应用曙光.但其稳定性方面尚未发展成熟,尤其在制备和工作过程中电池器件需要经历高温考验,电池的热稳定性要求高.三元共混策略是在传统的二元OSCs活性层中引入第三组分,利用第三组分调控分子间的相互作用,在实现高效光电转换效率的同时有效提高器件热稳定性,展现出了极大的应用潜力.本综述首先从器件热衰减过程出发,总结了OSCs热衰减过程中包括:热致活性层形貌变化、各层材料之间的互扩散行为以及界面老化等相关机制.在此基础上,重点介绍了三元策略在提高OSCs热稳定性方面的应用进展和作用机制.最后,对三元策略在OSCs中的应用发展进行总结并展望,指出第三组分的针对性选择以及作用机制解析是三元OSCs面临的关键问题和挑战.

关键词：有机太阳能电池热稳定性效率三元策略

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Hybrid Hole Extraction Layer Enabled High Efficiency in Polymer Solar Cells

Hybrid Hole Extraction Layer Enabled High Efficiency in Poly...

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第九届新型太阳能材料科学与技术学术研讨会

作者： Zhongqiang Wang Jiale Dong Jian Guo Zongtao Wang lingpeng yan Yuying Hao Hua Wang Bingshe Xu Shougen Yin Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Research Center of Advanced Materials Science and TechnologyTaiyuan University of Technology

Charge extraction layers with excellent charge extraction capability are essential for achieving high photovoltaic performance in cells. In this work, a hole extraction layer(HEL) is developed by doping conductive polymer TFB into CuSCN(CuSCN:TFB(X)), which exhibits good light transparency and high affinity for the light absorber. Compared to the reference cell, the CuSCN:TFB(X) HEL-based cells show impressive enhancement owing to the increased exciton dissociation and charge extraction processes and weak recombination losses. Furthermore, matched work function, better interface contact, and appropriate domain size also contribute to the enhanced power conversion efficiency. As a consequence, the highest conversion efficiency of 15.28% is observed in a cell based on the PM6:Y6 blend film and CuSCN:TFB(1.0%) HEL, which is >16% higher than the efficiency of 13.13% in a cell with CuSCN HEL.

关键词： hole extraction layer high efficiency polymer solar cells CuSCN TFB

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聚乙二醇修饰对P3HT/ZnO复合膜形貌和光学性能的影响

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功能材料 2015年第20期46卷 20057-20062页

作者：郝亚敏杨维佳闫翎鹏杨永珍刘旭光许并社太原理工大学新材料界面科学与工程教育部重点实验室太原030024 太原理工大学新材料工程技术研究中心太原030024 太原理工大学化学化工学院太原030024

首先选用聚乙二醇(PEG)对水热法合成的粒径约200nm的ZnO球进行表面钝化,考察了PEG分子量、用量对ZnO薄膜形貌及光学性能的影响和PEG的能级结构;然后采用聚3-己基噻吩(P3HT)和最优参数PEG修饰前、后的ZnO纳米球共混旋涂来制备P3HT/ZnO复... 详细信息

首先选用聚乙二醇(PEG)对水热法合成的粒径约200nm的ZnO球进行表面钝化,考察了PEG分子量、用量对ZnO薄膜形貌及光学性能的影响和PEG的能级结构;然后采用聚3-己基噻吩(P3HT)和最优参数PEG修饰前、后的ZnO纳米球共混旋涂来制备P3HT/ZnO复合膜,利用原子力显微镜、紫外-可见分光光度计、荧光光谱分析仪考察PEG钝化修饰对复合膜形貌及光学性能的影响。结果表明,采用相对分子质量为6 000、用量为5%(质量分数)的PEG修饰ZnO时,制备的ZnO薄膜均一性最好;PEG修饰的ZnO与P3HT具有良好的能级匹配性;P3HT与PEG修饰后的ZnO形成的复合膜表面规整且缺陷较少,而且在可见光区的光吸收作用增强,荧光猝灭现象加剧,表明PEG修饰增加了ZnO和P3HT的接触面积,促进了界面间的电荷转移。

关键词：聚乙二醇 ZnO 复合膜光学性能

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