具有延遲熒光性質(zhì)的電致發(fā)光材料的設(shè)計(jì)、合成及性能研究
[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.
【學(xué)位授予單位】:北京理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN383.1
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