本文關鍵詞： 有機發(fā)光二極管 光提取 白光 疊層 色穩(wěn)定性 運行穩(wěn)定性　出處：《蘇州大學》2015年碩士論文　論文類型：學位論文

【摘要】：有機發(fā)光二極管(OLED)已經(jīng)在全彩顯示屏、可穿戴設備以及環(huán)境友好的室內照明領域獲得越來越高的關注度。特別是,疊層和白光OLED技術由于本身具有高效率,長壽命等優(yōu)點,在下一代的照明工程中備受矚目。隨著新型高效磷光與熱延遲熒光材料的研發(fā),OLED器件的內量子效率已經(jīng)接近100%。然而,由于受到傳統(tǒng)平面化器件構筑方式引發(fā)的波導效應的嚴重影響,OLED器件外量子效率通常只能達到20%左右,這在很大程度上制約著OLED器件的實際應用。為此,如何提高OLED器件光提取效率成為該領域的熱點。本論文主要以OLED器件光學調控作為研究目標,通過對OLED器件中光學損耗機制的系統(tǒng)性研究,深化對微納結構光調控特性的理解。在寬光譜、廣視角、偏振不敏感的高效減反原則的指導下,設計出適用于OLED器件光提取的準周期或隨機納米光調控結構(DAN)。與此同時,基于軟納米壓印技術,提出并實現(xiàn)了納米圖案化OLED器件制備方法。采用DAN光調控結構,制備了單層和疊層OLED器件,實現(xiàn)了光提取效率提升。結合光學模擬,探討了DAN結構與光學模式的耦合,揭示了寬光譜、廣視角的光調控機制。具體而言,納米圖案化器件的光提取效率相較于平面化器件,增強因子高達2.6;同時,納米圖案化疊層器件的工作壽命是單層平面化器件的10倍以上。其次,引入光調控結構,緩解了疊層結構中光學干涉或微腔效應導致的角度色譜漂移問題�？紤]到白光OLED器件的寬光譜特性,我們進一步優(yōu)化了DAN結構參數(shù)和納米壓印條件。同時設計合適的層疊式排布的能級結構,實現(xiàn)具有高效電光轉換效率和光提取效率的超高性能納米圖案化白光OLED器件。實驗結果表明,納米圖案化白光器件具有較高的亮度-光譜穩(wěn)定性和極好的角度色穩(wěn)定性。
[Abstract]:Organic light-emitting diodes (OLED) have gained increasing attention in the fields of full-color display, wearable devices and environmentally friendly indoor lighting. In particular, laminated and white-light OLED technologies have the advantages of high efficiency, long life, etc. In the next generation of lighting engineering, the quantum efficiency of OLED devices is approaching 100 with the development of novel high-efficiency phosphorescence and thermal delay fluorescent materials. Due to the influence of waveguide effect caused by the traditional planar device construction method, the external quantum efficiency of OLED device is usually only about 20%, which restricts the practical application of OLED device to a great extent. How to improve the optical extraction efficiency of OLED devices has become a hot topic in this field. In this paper, the optical control of OLED devices is taken as the research goal, and the mechanism of optical loss in OLED devices is systematically studied. Under the guidance of the principle of wide spectrum, wide viewing angle and polarization insensitivity, a quasi-periodic or random nano-light control structure suitable for optical extraction of OLED devices was designed. At the same time, Based on soft nano-imprint technology, the fabrication method of nano-patterned OLED devices is proposed and realized. Monolayer and laminated OLED devices are fabricated by using DAN optical control structure, and the efficiency of optical extraction is improved. The coupling of DAN structure and optical mode is discussed, and the light regulation mechanism of wide spectrum and wide angle of view is revealed. In particular, the optical extraction efficiency of nano-patterned devices is as high as 2.6 compared with that of planar devices, and at the same time, The working life of nano-patterned laminated devices is more than 10 times longer than that of single-layer planar devices. The problem of angle chromatographic drift caused by optical interference or microcavity effect in laminated structure is alleviated. Considering the wide spectrum characteristics of white light OLED devices, We further optimize the structural parameters of DAN and the conditions of nano-imprint. At the same time, we design a suitable stacked energy level structure. An ultra-high performance nano-patterned white OLED device with high efficiency electro-optic conversion efficiency and optical extraction efficiency is realized. The experimental results show that the nano-patterned white light device has high luminance spectral stability and excellent angle color stability.
【學位授予單位】：蘇州大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN383.1

【共引文獻】

相關會議論文 前1條

1 唐建新;周雷;歐清東;相恒陽;陳敬德;李艷青;;有機光電器件的光過程調控[A];中國化學會第29屆學術年會摘要集——第17分會：光電功能器件[C];2014年

相關博士學位論文 前1條

1 周雷;仿生蛾眼結構有機光電器件的光調控研究[D];蘇州大學;2015年

相關碩士學位論文 前2條

1 顧妍;基于金屬納米顆粒的光學調控在有機光電器件中的應用[D];蘇州大學;2014年

2 蔣曉晨;聚合物電致發(fā)光二極管（PLED）的電極調控及修飾[D];蘇州大學;2014年

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本文編號：1541884