本文選題：微納結(jié)構(gòu) + 自由納米柱狀陣列��； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：有機(jī)電致發(fā)光二極管(Organic Light-Emitting Diode,OLED)具有節(jié)能、無紫外線、結(jié)構(gòu)簡單、可實(shí)現(xiàn)柔性等一系列優(yōu)點(diǎn),被認(rèn)為是下一代主流平板顯示與照明技術(shù),但目前仍面臨著工藝復(fù)雜、壽命低、成本高的問題。本論文主要圍繞在使用已有有機(jī)層結(jié)構(gòu)的基礎(chǔ)上,借助微納結(jié)構(gòu)與自組裝單分子層(Self-assembly Molecules,SAM)修飾電極的應(yīng)用以提升OLED器件的性能。具體研究內(nèi)容如下:(1)本文分別對PMMA/PS在甲苯和四氫呋喃(THF)中、在不同配比下的成膜情況進(jìn)行了研究,發(fā)現(xiàn)以甲苯做溶劑,在PMMA:PS濃度比為3:7時(shí),能夠得到均勻且致密的自由納米柱狀陣列結(jié)構(gòu)。制備OLED器件,測試結(jié)果表明自由納米柱狀陣列使得器件的發(fā)光光譜變寬,同時(shí)有效提升器件亮度。對不同退火溫度下的薄膜表面形貌進(jìn)行測試,發(fā)現(xiàn)退火溫度高于材料玻璃化溫度將會導(dǎo)致薄膜上相鄰微納結(jié)構(gòu)產(chǎn)生團(tuán)聚,嚴(yán)重影響薄膜表面結(jié)構(gòu)的均勻性與一致性。(2)本文分別以溴乙酸和二氯苯氧乙酸處理ITO,在其上形成自組裝單分子層,并研究單分子層對ITO表面性能的影響,結(jié)果表明:采用二氯苯氧乙酸處理ITO一方面優(yōu)化了ITO和后續(xù)膜層的接觸性能,有利于有機(jī)層的成膜,另一方面能降低ITO與后續(xù)有機(jī)材料之間的空穴注入勢壘,提升載流子的傳輸能力。在結(jié)構(gòu)為ITO/PVK(2000 r/min)/FIrPic:SimCP(2000 r/min)/TPBi(30 nm)/Li F(1 nm)/Al(150nm)的OLED器件中,發(fā)現(xiàn)采用經(jīng)二氯苯氧乙酸處理的ITO作陽極,器件最大亮度提升至1875.2 cd/m2,啟亮電壓由6.2 V降至5.3 V,器件性能得到提升。在本論文中,通過微納結(jié)構(gòu)與SAM修飾電極的應(yīng)用,提升了器件的發(fā)光亮度與電流效率。后續(xù)實(shí)驗(yàn)中,可以從抑制有害離子對有機(jī)層的滲透、減小載流子在有機(jī)層的堆積這兩方面展開以提升器件的壽命。
[Abstract]:Organic Light-Emitting diode (Ole) has a series of advantages, such as energy saving, UV free, simple structure, flexibility and so on. It is considered to be the next mainstream flat panel display and lighting technology, but it still faces complex technology and low life. The problem of high cost. Based on the existing organic layer structure, the performance of OLED devices is improved by the application of micro-nano structure and self-assembled monolayer self-assembly molecules (SAM) modified electrode. The specific research contents are as follows: (1) in this paper, the film-forming conditions of PMMA/PS in toluene and tetrahydrofuran (THF) were studied respectively. It was found that toluene was used as solvent and PMMA:PS concentration ratio was 3:7. A uniform and compact array of free nanocrystalline arrays can be obtained. The experimental results show that the free nano columnar array widens the luminescence spectrum of the device and effectively enhances the luminance of the device. The surface morphology of the films was measured at different annealing temperatures. It was found that the annealing temperature higher than the glass transition temperature would lead to the agglomeration of the adjacent microstructures on the films. In this paper, ITO was treated with bromoacetic acid and dichlorophenoxyacetic acid to form a self-assembled monolayer, and the effect of monolayer on the surface properties of ITO was studied. The results show that on the one hand, the contact properties of ITO and subsequent film are optimized by using dichlorophenoxyacetic acid to treat ITO, and on the other hand, the hole injection barrier between ITO and subsequent organic materials is reduced. Enhance carrier transmission capacity. In the OLED device with the structure of ITO/PVK(2000 r/min)/FIrPic:SimCP(2000 r/min)/TPBi(30 nm)/Li FN 1 NM / Al (150 nm), it is found that the maximum brightness of the device is increased to 1875.2 CD / m 2, and the starting voltage is reduced from 6.2 V to 5.3 V, and the performance of the device is improved by using ITO treated with dichlorophenoxyacetic acid as anode. In this thesis, the luminance and current efficiency of the device are improved by the application of micro-nano structure and SAM modified electrode. In the following experiments, the lifetime of the device can be improved by inhibiting the percolation of harmful ions to the organic layer and reducing the accumulation of carriers in the organic layer.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN383.1

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