首页 | 官方网站   微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 234 毫秒
1.
有机电致发光器件也被称为OLED,在近几十年之内吸引了众多科研人员的目光。OLED元器件具有诸多优势,比如主动发光和超薄、低能耗、视角范围广等优势。在目前市场上已经开始对这种材料大规模的生产。逐渐商业化生产的OLED器件仍旧需要从电致发光材料的设计、器件结构的优化等几个方面来降低生产的成本。蒽衍生物有比较高的荧光量子和很好的稳定性,还有诸多优势,可以运用在有机电致发光器件的生产中。  相似文献   

2.
1990年Burroughes采用聚对苯乙炔(PPV)作为有源层制作聚合物电致发光器件,开创了共轭聚合物科学的新领域,由于聚合物电致发光器件具有制备简单、发光效率和发光亮度高、发光波长易于调节等显著特点,引起了各国的高度重视,大量的共轭聚合物材料成功地应用于电致发光器件,使得电致发光聚合物材料和器件的研究成为近年来最活跃的领域之一.  相似文献   

3.
1990年Burroughes采用聚对苯乙炔(PPV)作为有源层制作聚合物电致发光器件,开创了共轭聚合物科学的新领域,由于聚合物电致发光器件具有制备简单、发光效率和发光亮度高、发光波长易于调节等显著特点,引起了各国的高度重视,大量的共轭聚合物材料成功地应用于电致发光器件,使得电致发光聚合物材料和器件的研究成为近年来最活跃的领域之一.  相似文献   

4.
有机电致发光器件具有直流电压驱动、主动发光、体积小、无视角限制、响应快 ,以及色彩全、制作工艺简单等优点 ,作为新型显示技术而倍受瞩目 .在构建有机电致发光器件的三大材料中 (空穴传输材料、电子传输材料和发光材料 ) ,空穴传输材料的玻璃化温度(Tg)以及红色发光材料的色纯度和发光效率亟待改进 .本论文通过对分子进行合适的裁剪与修饰 ,设计合成了具有良好应用前景的空穴传输材料和红色发光材料 ,研究了化合物的物化性质与分子结构的关系以及它们在器件上的应用 .1 吡唑啉化合物1,3,5 三芳基 4 ,5 二氢 1H吡唑 (2 吡唑啉 )化合…  相似文献   

5.
1990年Burroughes采用聚对苯乙炔9PPV)作为有源层制作聚合物电致发光器件,开创了共轭聚合物科学的新领域,由于聚合物电致发光器件具制备简单,发光效率和发光亮度高,发光波长于调节等显发光聚合物材料和器件的研究成国近年来最活跃的领域之一。  相似文献   

6.
较详细地综述了聚合物电致发光材料的研究进展,并描述了聚合物电致发光原理及发光器件结构。  相似文献   

7.
有机电致磷光发光材料是一类具有很高发光效率的有机电致发光材料,它的理论内量子效率为100%,是有机荧光电致发光材料的4倍。综述了有机小分子磷光发光材料、有机聚合物磷光发光材料、树枝形磷光发光材料近年来的研究状况及存在的问题,介绍了分子结构对材料和器件性能的影响,并总结了目前已经取得的研究成果。  相似文献   

8.
有机电致发光的研究进展   总被引:5,自引:0,他引:5  
王建营 《化学世界》1998,39(3):115-119
有机材料具有高的荧光量子效率和半导体性质,通过掺杂或适当的分子设计可以调谐发光颜色。本文介绍和评述了近年来有机薄膜电致发光的原理,电致发光器件、电致发光材料的开发及其应用前景。  相似文献   

9.
小分子配合物电致发光材料研究进展   总被引:5,自引:0,他引:5  
本文简述了有机电致发光及有机发光二极管的基本原理;概述了小分子配合物电致发光材料的最新研究进展,讨论了它们的光电性质、器件的发光效率和稳定性;展望了小分子配合物电致发光材料的前景。  相似文献   

10.
较系统地阐述无机电致发光材料的类型、发光原理及器件构成,以及无机薄膜电致发光材料的制备方法、研究的最新进展及今后的发展趋势。  相似文献   

11.
In recent years, organic electronic devices which use organic materials as an active layer have gained considerable interest as light-emitting devices, energy converting devices and switching devices in many applications. In these organic electronic devices, the organic materials play a key role of managing the device performances and various organic materials have been developed to improve the device performances of organic electronic devices. In this paper, recent developments of organic electronic materials for organic light-emitting diodes and organic solar cells were reviewed.  相似文献   

12.
有机小分子电致发光材料及器件的研究进展   总被引:6,自引:0,他引:6  
综述了以有机小分子发光材料为基础的红绿蓝和白光有机发光二极管的结构、发光性质,简要介绍了其应用前景和发展趋势。  相似文献   

13.
Solution-processed white organic light-emitting diodes (WOLEDs) have drawn great attention both in the academic and industrial research communities due to the potential application in low-cost, large-area, solid-state lightings. Issues related to the device efficiencies are largely hampering progress in this field. Alongside the development of new materials and novel device architectures, distinct progress has been made for such white devices. In particular, the all-phosphorescent light-emitting strategy has been intensively developed in recent years, mainly focusing on a host guest, doping-system-based, single-active-layer structure and a solution-processed, multilayer device structure. Novel approaches, including white single polymers and excimer-/exciplex-based white devices, have also appeared as a promising choice and received great attention. As a prerequisite, the issue of the morphology of the emissive layer is also important and has an influence on the optoelectronic behavior of the device. Herein, major advances in solution-processed WOLEDs based on polymers, dendrimers, or solution-processed small molecules are summarized. Special attention is focused on the main progress in high-efficiency, solution-processed WOLEDs with the key strategies mentioned above and the morphology issue in these systems. The remaining challenges in pursuing the development of reliable and energy-saving lighting devices are also discussed.  相似文献   

14.
A recent advance in the field of light emitting polymers has been the discovery of electroluminescent conjugated polymers, that is, kind of fluorescent polymers that emit light when excited by the flow of an electric current. These new generation fluorescent materials may now challenge the domination by inorganic semiconductor materials of the commercial market in light-emitting devices such as light-emitting diodes (LED) and polymer laser devices. This review provides information on unique properties of conjugated polymers and how they have been optimized to generate these properties. The review is organized in three sections focusing on the major advances in light emitting materials, recent literature survey and understanding the desirable properties as well as modern solid state lighting and displays. Recently, developed conjugated polymers are also functioning as roll-up displays for computers and mobile phones, flexible solar panels for power portable equipment as well as organic light emitting diodes in displays, in which television screens, luminous traffic, information signs, and light-emitting wallpaper in homes are also expected to broaden the use of conjugated polymers as light emitting polymers. The purpose of this review paper is to examine conjugated polymers in light emitting diodes (LEDs) in addition to organic solid state laser. Furthermore, since conjugated polymers have been approved as light-emitting organic materials similar to inorganic semiconductors, it is clear to motivate these organic light-emitting devices (OLEDs) and organic lasers for modern lighting in terms of energy saving ability. In addition, future aspects of conjugated polymers in LEDs were also highlighted in this review.  相似文献   

15.
有机电致发光材料研究新进展   总被引:3,自引:0,他引:3  
简要介绍了有机电致发光器件的结构、工作原理。重点从有机电致发光材料器件结构的角度出发,对电致发光材料最新研究进展进行了综述。  相似文献   

16.
有机电致发光功能色素材料的研究   总被引:7,自引:0,他引:7  
介绍了有机电致发光材料的发展过程,阐述了空穴、电子传输材料。详细叙述了发光材料尤其是悬挂体系有机电致发光材料。提出了研究新材料的意义。  相似文献   

17.
Recent progresses of iridium complexes-containing macromolecules, including the linear polymers, dendrimers as well as supramolecular polymers, for solution-processable phosphorescent organic light-emitting devices, have been reviewed. The synthesis, structural characterization and optoelectronic properties of iridium-based electrophosphorescent materials are summarized.  相似文献   

18.
Light-emitting devices have potential applications in functional and 'intelligent' textiles and clothing. Much research work has been conducted on electroluminescent devices based on small organic molecules and polymers due to their potential application in new generation displays. An overview is presented of progress in the development of organic and polymer light-emitting devices. The fabrication processes, materials and methods of improving their performance are reviewed. Attention is given to the potential application of flexible displays and the patterning method for producing a full colour display. Analytical methods are also discussed.  相似文献   

19.
One of the new directions in organic electronics is the development of light-emitting organic field-effect transistors, which combine the light-emitting properties of organic light-emitting diodes and the switching properties of organic field-effect transistors. Optical and electronic properties of novel nanocomposite materials based on semiconducting polymers and inorganic nanoparticles and designed for applications in organic electronics devices were investigated. Light-emitting organic field-effect transistors with composite active layers based on the soluble semiconducting polymers PFO and MEH-PPV and ZnO nanoparticles and having asymmetric electrodes (Al and Au) that inject electrons into ZnO and holes into PFO and MEH-PPV were prepared and investigated. The data are interpreted in the context of the possibility of organic field-effect transistors based on PFO: ZnO and MEH-PPV: ZnO composite films to work in both the unipolar regime and the ambipolar regime. It is shown that the mobility of charge carriers in light-emitting organic field-effect transistors based on PFO: ZnO at 300 K reaches ~0.02 for electrons and ~0.03 cm2/(V s) for holes, increasing with an increase in the concentration of nanoparticles up to ~2 cm2/(V s), a value that is comparable to the maximum mobility values for conducting polymers. Light-emitting organic field-effect transistors based on PFO: ZnO and MEH-PPV: ZnO emit light in the green and orange ranges of the optical spectrum, respectively, their electroluminescence intensities rising with an increase in either the negative bias or the positive bias at the source-drain and the gate as well as with an increase in the concentration of ZnO nanoparticles. The results indicate that light-emitting organic field-effect transistors based on soluble conjugated polymers and semiconducting ZnO nanoparticles are examples of multifunctional devices whose production technology is compatible with the modern ink-jet printing technology of organic electronics.  相似文献   

20.
有机电致发光材料的研究进展及应用   总被引:1,自引:0,他引:1  
简要论述有机电致发光设备的发光机理、器件结构及彩色显示方法。详细介绍有机电致发光材料的种类、组成、特点和研究近况,并对其用途和前景,尤其在军事领域的应用作了一定介绍。另外还指出了有机电致发光在商业化过程中一些急待解决的问题  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号