共查询到19条相似文献,搜索用时 78 毫秒
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有机/高分子电致发光器件是当前国内外平板显示器技术领域的研究热点,8-羟基喹啉金属配合物(8HQM)以其优良的电致发光性能成为研制高效率的有机/高分子电致发光器件的首选材料.针对近十年来8HQM电致发光材料的研究状况,对其电致发光机制、分子结构及发光性能的关系、分子种类及其最新研究进展,进行综述,展望了其发展趋势. 相似文献
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有机电致发光材料的能隙计算 总被引:1,自引:0,他引:1
有机电致发光材料具有可进行分子结构设计而改变其溶解性及光电性能等特点,以此为功能层、将电能转换为光能的有机电致发光二极管更是具备轻薄、高效、自发光、低能耗以及低成本可实现柔性器件等潜在优势。因此,研究合成高性能的有机电致发光材料并应用于制备可实用化的显示器及照明产品成了业界研究的热点。文中综述了以能带理论为基础,对有机电致发光材料进行结构设计改进发光性能时对将合成的材料的能隙计算的理论模型与计算方法及其应用进展,可望为聚合物发光材料的合成设计提供理论支持。 相似文献
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有机电致发光发射材料用金属络合物研究 总被引:1,自引:0,他引:1
金属有机络合物在分析化学中有着广泛的应用。而用做发光材料还是近些年才开始的。有机电致发光(EL)材料从分子结构上区分可分为(1)有机色素(2)螯今型金属络合物(3)有机高分子,其中EL发光性能最好的则是Al ̄(3+)-8-羟基喹啉的络合物,基于这种观点本文系统地评述了螯今型金属络合物如何满足有机EL器件要求及近年来用各种金属络合物研制出的有机EL器件的进展 相似文献
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有机电致发光材料研究进展 总被引:9,自引:0,他引:9
本文综述了有机电致发光材料的研究进展 ,重点介绍了聚合物电致发光材料的研究 ,并对这个领域存在的问题和有机电致发光材料的应用前景作了评述 相似文献
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有机电致发光材料与器件的研究已取得了重要进展,但要实现高信息含量的应用,器件的稳定性和效率仍须进一步提高。基于量子统计理论的研究结果表明,只有25%的电子空穴复合能量生成单线态激子,对于一个纯荧光的发光材料,在理论上,其器件效率的上限是光致发光效率的25%。三线态发光材料的应用,理论上可有效利用所有的复合能量,从而大幅度提高器件效率,目前已成为有机电致发光领域的研究热点。综述了有机三线态电致发光材料与器件的进展。 相似文献
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聚合物电致发光材料的研究现状及应用前景 总被引:3,自引:0,他引:3
聚合物电致发光材料是近几年来取得很大进展而倍受关注的新型功能材料。电致发光薄膜器件激发电压低、发光效率高、易得到彩色显示 ,而且容易实现大屏幕平板化。本文综述这类薄膜电致发光器件的发光原理、发光材料、器件的制备方法以及改善器件特性的方法 相似文献
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有机小分子电致磷光材料研究进展 总被引:2,自引:0,他引:2
在过去20年对小分子电致发光器件的研究中,由于没有充分利用三线态激子能量,器件的内量子效率存在25%的理论极限.由于有机磷光染料可以同时利用其单线态和三线态激子,理论上可以使器件的内量子效率达到100%,突破了25%的理论极限,因而近几年在小分子主体材料中掺杂磷光染料制成器件的研究备受关注.综述了近几年金属有机电致磷光材料的研究进展,重点评述了金属铱配合物在分子设计上的研究进展,同时论述了其发光机理和掺杂剂材料以及器件制作的研究进展,展望了金属有机配合物电致磷光材料的发展前景,并提出了今后磷光材料的发展方向. 相似文献
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Kyung Sun Park Jangmi Baek Yoonkyung Park Lynn Lee Jinho Hyon Yong‐Eun Koo Lee Nabeen K. Shrestha Youngjong Kang Myung Mo Sung 《Advanced materials (Deerfield Beach, Fla.)》2017,29(6)
Manufacturing high‐performance organic electronic circuits requires the effective heterogeneous integration of different nanoscale organic materials with uniform morphology and high crystallinity in a desired arrangement. In particular, the development of high‐performance organic electronic and optoelectronic devices relies on high‐quality single crystals that show optimal intrinsic charge‐transport properties and electrical performance. Moreover, the heterogeneous integration of organic materials on a single substrate in a monolithic way is highly demanded for the production of fundamental organic electronic components as well as complex integrated circuits. Many of the various methods that have been designed to pattern multiple heterogeneous organic materials on a substrate and the heterogeneous integration of organic single crystals with their crystal growth are described here. Critical issues that have been encountered in the development of high‐performance organic integrated electronics are also addressed. 相似文献
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由于有机分子材料和聚合物材料本身的各种优良性质,用其取代传统的无机半导体材料来修饰电信号具有非常广阔的研究前景.本文简要介绍了近年来有机电双稳材料与器件在电存储方面的研究进展,并讨论了有机电双稳器件(OEBD)目前存在的问题以及今后发展的方向. 相似文献
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Fangxu Yang Shanshan Cheng Xiaotao Zhang Xiaochen Ren Rongjin Li Huanli Dong Wenping Hu 《Advanced materials (Deerfield Beach, Fla.)》2018,30(2)
The remarkable merits of 2D materials with atomically thin structures and optoelectronic attributes have inspired great interest in integrating 2D materials into electronics and optoelectronics. Moreover, as an emerging field in the 2D‐materials family, assembly of organic nanostructures into 2D forms offers the advantages of molecular diversity, intrinsic flexibility, ease of processing, light weight, and so on, providing an exciting prospect for optoelectronic applications. Herein, the applications of organic 2D materials for optoelectronic devices are a main focus. Material examples include 2D, organic, crystalline, small molecules, polymers, self‐assembly monolayers, and covalent organic frameworks. The protocols for 2D‐organic‐crystal‐fabrication and ‐patterning techniques are briefly discussed, then applications in optoelectronic devices are introduced in detail. Overall, an introduction to what is known and suggestions for the potential of many exciting developments are presented. 相似文献
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基于有机分子的光、电、磁功能材料因其巨大的产业化前景,一直受到科技界的高度关注,已成为21世纪重要研究方向之一,也取得了一系列重大进展。有机光电功能材料的研究涉及物理、化学、材料、信息、电子乃至生物学等,是名副其实的交叉学科。在有机光电材料的研究中,一个重要的目标就是搞清材料结构与性能之间的关系,利用一系列先进的方法和工具,对材料的各级结构信息进行表征,找到材料特定性能与结构之间的内在联系,为材料的设计与改性提供必要的依据。晶体学作为一个已经诞生100年的方法,在这一进程中起到了关键的作用。从对材料作用机理的认识,到结构与功能关系的探讨,以及功能材料的定向设计,都需要晶体学知识和方法。结合作者课题组近年来在有机光电材料研究过程中一些比较有代表性的研究工作,阐述晶体学在探明材料的光电性能与结构之间的关系,特别是研究一些材料特殊性质的起源中不可或缺的作用。 相似文献
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The development of organic semiconductors for photovoltaic devices, over the last three decades, has led to unexpected performance for an alternative choice of materials to convert sunlight to electricity. New materials and developed concepts have improved the photovoltage in organic photovoltaic devices, where records are now found above 13% power conversion efficiency in sunlight. The author has stayed with the topic of organic materials for energy conversion and energy storage during these three decades, and makes use of the Hall of Fame now built by Advanced Materials, to present his view of the path travelled over this time, including motivations, personalities, and ambitions. 相似文献
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Zhan X Facchetti A Barlow S Marks TJ Ratner MA Wasielewski MR Marder SR 《Advanced materials (Deerfield Beach, Fla.)》2011,23(2):268-284
Organic electron-transporting materials are essential for the fabrication of organic p-n junctions, photovoltaic cells, n-channel field-effect transistors, and complementary logic circuits. Rylene diimides are a robust, versatile class of polycyclic aromatic electron-transport materials with excellent thermal and oxidative stability, high electron affinities, and, in many cases, high electron mobilities; they are, therefore, promising candidates for a variety of organic electronics applications. In this review, recent developments in the area of high-electron-mobility diimides based on rylenes and related aromatic cores, particularly perylene- and naphthalene-diimide-based small molecules and polymers, for application in high-performance organic field-effect transistors and photovoltaic cells are summarized and analyzed. 相似文献