具有延迟荧光性质的电致发光材料的设计、合成及性能研究

发布时间：2018-07-29 19:32

【摘要】：本文着眼于当前有机电致发光二极管(OLED)领域热点研究方向,即热激发延迟荧光(TADF)材料。针对其中关键问题,进行了分子结构设计、目标产物合成,并对材料的光物理性质进行了表征,最终制备出具有实用价值的高效OLED器件。热激发延迟荧光材料突破传统OLED荧光材料仅有25%的理论内量子效率极限,具有高效率与器件结构简单等优势,是未来OLED领域发展的主要方向。以下是对本文中各章内容的简介:1、在第一章中,主要对OLED的发展历史与其应用进行讲述并对当前热点关注的TADF材料进行介绍。2、在第二章中,介绍了以蒽醌系列材料为基础设计合成了2-咔唑基蒽醌(An Cz)。合理的分子结构设计使得An Cz的ΔEST较小,具有TADF性质,理论内量子效率100%。基于An Cz的荧光器件最大外量子效率高达14.4%,CIE值为(0.45,0.53)。采用m CP和CBP掺杂发光层均取得优异效果。3、在第三章中,介绍了以蒽醌系列材料为基础设计合成了2-吩噻嗪基蒽醌(An PTZ)。合理的分子结构设计使得An PTZ的ΔEST较小,具有TADF性质,理论内量子效率100%。基于An PTZ的荧光器件最大外量子效率为0.6%,CIE值为(0.44,0.53)。4、在第四章中,介绍了以蒽醌系列材料为基础设计合成了2,6-二咔唑基蒽醌(DAn Cz)。合理的分子结构设计使得An PTZ的ΔEST较小,具有TADF性质,理论内量子效率100%。并对DAn Cz光物理性质进行了表征。5、在第五章中对上述材料进行回顾总结,并对未来的TADF材料发展进行展望。
[Abstract]:In this paper, we focus on the hot research direction of electroluminescent diode (OLED), that is, thermal excited delayed fluorescence (TADF) materials. Aiming at the key problems, the molecular structure design, target product synthesis and photophysical properties of the material were designed and characterized. Finally, high efficiency OLED devices with practical value were fabricated. Thermal excited delayed fluorescence material breaks through the limit of theoretical quantum efficiency of traditional OLED fluorescence material which is only 25%. It has the advantages of high efficiency and simple device structure. It is the main direction of development of OLED in the future. The following is a brief introduction to the contents of each chapter of this paper: 1. In the first chapter, the development history and application of OLED are described, and the TADF materials of current hot concern are introduced. This paper introduces the design and synthesis of 2-carbazolyl anthraquinone (An Cz). Based on anthraquinone series materials. The rational design of molecular structure makes the 螖 EST of an C z smaller and has the property of TADF. The quantum efficiency in theory is 100%. The maximum external quantum efficiency of the fluorescence device based on an Cz is as high as 14.4% and the CIE value is (0.45-0.53). MCP and CBP doped luminescent layers have achieved excellent results. In Chapter 3, the design and synthesis of 2-phenothiazinyl anthraquinone (An PTZ). Based on anthraquinone series are introduced. The rational design of molecular structure makes the 螖 EST of an PTZ smaller and has the property of TADF. The quantum efficiency of an PTZ is 100kum in theory. The maximum external quantum efficiency of the fluorescence device based on an PTZ is (0.440.53) .4.In the fourth chapter, we introduce the design and synthesis of 2C6- dicarbazolyl anthraquinone (DAn Cz). Based on anthraquinone series materials. The rational design of molecular structure makes the 螖 EST of an PTZ smaller and has the property of TADF. The quantum efficiency of an PTZ is 100kum in theory. The photophysical properties of DAn Cz were characterized. In Chapter 5, the above mentioned materials were reviewed and summarized, and the future development of TADF materials was prospected.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN383.1

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