碳量子點(diǎn)基有機(jī)電致發(fā)光器件關(guān)鍵制造技術(shù)研究
發(fā)布時(shí)間：2018-07-15 20:13
【摘要】：有機(jī)電致發(fā)光二極管(OLED)經(jīng)過數(shù)十年的發(fā)展已經(jīng)取得了令人矚目的突破和成就,無論是在研究領(lǐng)域還是在商業(yè)化的道路中都取得了極大的進(jìn)步。但是,OLED器件目前仍存在一些問題,例如可供選擇的發(fā)光材料較少并且普遍比較昂貴、穩(wěn)定性和壽命較低、制備工藝繁瑣等。針對(duì)以上問題,論文提出了一些新的想法和思路,使用了清潔、環(huán)保和廉價(jià)的碳量子點(diǎn)材料應(yīng)用在OLED器件中,旨在提高器件發(fā)光性能、降低制備成本以及減少環(huán)境污染。制備了碳量子點(diǎn)基有機(jī)電致發(fā)光器件。通過微波法制備了碳量子點(diǎn)納米材料,并且對(duì)所制得的碳量子點(diǎn)進(jìn)行了TEM表征。論文中采用真空鍍膜技術(shù)和旋轉(zhuǎn)涂覆技術(shù)相結(jié)合的方法將碳量子點(diǎn)制備在OLED器件的有機(jī)結(jié)構(gòu)中,并分別研究了碳量子點(diǎn)材料對(duì)結(jié)構(gòu)為ITO/m-MTDATA/NPB/CDs/BCP/Alq3/Al的藍(lán)光OLED器件、結(jié)構(gòu)為ITO/m-MTDATA/NPB/CDs/Alq3:Rubrene:DCJTB/Alq3/Al的紅光OLED器件和結(jié)構(gòu)為ITO/m-MTDATA/NPB/CDs/MADN:Rubrene/Alq3/Al的黃光OLED器件性能的影響。實(shí)驗(yàn)結(jié)果表明,加入碳量子點(diǎn)功能層的OLED器件在發(fā)光亮度、發(fā)光效率等方面明顯優(yōu)于典型的OLED器件。制備了碳量子點(diǎn)生物熒光粉,研究了以碳量子點(diǎn)作為熒光粉的轉(zhuǎn)化發(fā)光器件�；诘矸蹖�(duì)碳量子點(diǎn)發(fā)光猝滅的抑制作用,制備了以淀粉為基質(zhì)的碳量子點(diǎn)熒光粉。論文中制備了發(fā)光波長(zhǎng)為463 nm的藍(lán)光OLED器件,在OLED器件的激發(fā)下,熒光粉呈現(xiàn)出了穩(wěn)定的綠光發(fā)射。另外,通過改變熒光粉涂層厚度,研究了熒光粉厚度對(duì)器件光譜和色度的影響。最終在熒光粉厚度為1 mm時(shí),所制備的熒光粉器件表現(xiàn)為色坐標(biāo)為(0.35,0.46)的綠光發(fā)射。實(shí)驗(yàn)證明碳量子點(diǎn)熒光粉可以有效地改變器件的光譜和色度,實(shí)現(xiàn)光的調(diào)制作用。研究了氧化鎳納米結(jié)構(gòu)陽極緩沖層對(duì)藍(lán)光OLED器件性能的影響。通過對(duì)NiO顆粒形貌的測(cè)量和表征發(fā)現(xiàn),電化學(xué)沉積法所制備的NiO顆粒具有良好的納米結(jié)構(gòu)。根據(jù)Ni薄膜沉積時(shí)間的不同,論文中制備了四組對(duì)比實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果表明,納米結(jié)構(gòu)NiO緩沖層能夠有效地提高空穴注入效率,從而增加空穴-電子對(duì)的產(chǎn)生和復(fù)合效率。最終,當(dāng)Ni薄膜的沉積時(shí)間為30 s時(shí),器件的發(fā)光性能最佳。分別制備了基于PET襯底和玻璃襯底的OLED器件,研究了柔性襯底材料對(duì)器件性能的影響。實(shí)驗(yàn)結(jié)果表明,基于PET襯底的多層結(jié)構(gòu)器件展現(xiàn)出了良好的發(fā)光特性。但是,相比于剛性襯底器件,柔性器件在發(fā)光亮度、發(fā)光效率和電流密度上仍有不足。針對(duì)柔性器件目前所存在的問題,論文提出了在柔性襯底材料和陽極材料之間加入SiO_2改善層的措施。論文最后介紹了兩種柔性O(shè)LED器件封裝技術(shù),一種方法是在器件上制備薄膜阻擋層;另一種方法是在基板和功能層上加入柔性蓋板。兩種封裝技術(shù)都是為提高柔性顯示性能提供參考。
[Abstract]:Organic electroluminescent diodes (OLED) have made remarkable breakthroughs and achievements after decades of development, both in the field of research and in the road of commercialization has made great progress. However, there are still some problems in OLED devices, such as less and more expensive luminescent materials available, low stability and lifetime, cumbersome fabrication process and so on. Aiming at the above problems, this paper puts forward some new ideas and ideas, using clean, environmentally friendly and cheap carbon quantum dot materials in OLED devices to improve the luminescence performance of the devices, reduce the cost of preparation and reduce environmental pollution. Organic electroluminescent devices based on carbon quantum dots were fabricated. Carbon quantum dots were prepared by microwave method and characterized by TEM. In this paper, carbon quantum dots are fabricated in the organic structure of OLED devices by the combination of vacuum coating technology and rotating coating technology. The blue OLED devices with ITO / m-MTDATAP / NPB / CDsP / BCPP / Alq3 / Al structure are studied respectively. The red OLED with the structure of ITO / m-MTDATA-NPB / CDsAlq3: Rubrene-DCJTB / Alq3 / Al and the yellow OLED with ITO / m-MTDATA-NPB / NPB / MADN / Rubrene-R / Alq3 / Al has an effect on the performance of yellow OLED devices. The experimental results show that the OLED device with carbon quantum dot function layer is superior to the typical OLED device in luminance and luminous efficiency. Carbon quantum dots (QDs) as phosphors were prepared and the conversion luminescent devices with carbon QDs as phosphors were studied. Based on the inhibition of starch on the luminescence quenching of carbon quantum dots, the phosphors based on starch were prepared. Blue OLED devices with a wavelength of 463 nm have been fabricated in this paper. Under the excitation of OLED devices, the phosphors exhibit stable green emission. In addition, the influence of phosphor thickness on the spectrum and chromaticity of the device was studied by changing the thickness of phosphor coating. Finally, when the phosphor thickness is 1 mm, the phosphor exhibits green emission with a color coordinate of (0.35 ~ 0.46). Experimental results show that carbon quantum dot phosphors can effectively change the spectrum and chroma of the device and realize the modulation of light. The effect of nickel oxide nanostructure anode buffer layer on the performance of blue light OLED devices was investigated. By measuring and characterizing the morphology of nio particles, it is found that the nio particles prepared by electrochemical deposition have good nanostructures. According to the different deposition time of Ni film, four groups of comparative experiments were prepared in this paper. The experimental results show that the nio buffer layer of nanostructure can effectively improve the efficiency of hole injection and thus increase the generation and recombination efficiency of hole electron pairs. Finally, when the deposition time of Ni film is 30 s, the luminescence performance of the device is the best. OLED devices based on PET and glass substrates were fabricated, and the effects of flexible substrate materials on the properties of the devices were investigated. The experimental results show that the multilayer devices based on PET substrate exhibit good luminescence characteristics. However, compared with rigid substrate devices, flexible devices still lack luminance, luminous efficiency and current density. Aiming at the existing problems of flexible devices, the measures of adding SiO2 layer between flexible substrate material and anode material are put forward in this paper. Finally, two kinds of flexible OLED device packaging techniques are introduced, one is to fabricate thin film barrier layer on the device, the other is to add flexible cover plate to the substrate and functional layer. The two packaging technologies provide reference for improving the performance of flexible display.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN383.1
本文編號(hào)：2125252
[Abstract]:Organic electroluminescent diodes (OLED) have made remarkable breakthroughs and achievements after decades of development, both in the field of research and in the road of commercialization has made great progress. However, there are still some problems in OLED devices, such as less and more expensive luminescent materials available, low stability and lifetime, cumbersome fabrication process and so on. Aiming at the above problems, this paper puts forward some new ideas and ideas, using clean, environmentally friendly and cheap carbon quantum dot materials in OLED devices to improve the luminescence performance of the devices, reduce the cost of preparation and reduce environmental pollution. Organic electroluminescent devices based on carbon quantum dots were fabricated. Carbon quantum dots were prepared by microwave method and characterized by TEM. In this paper, carbon quantum dots are fabricated in the organic structure of OLED devices by the combination of vacuum coating technology and rotating coating technology. The blue OLED devices with ITO / m-MTDATAP / NPB / CDsP / BCPP / Alq3 / Al structure are studied respectively. The red OLED with the structure of ITO / m-MTDATA-NPB / CDsAlq3: Rubrene-DCJTB / Alq3 / Al and the yellow OLED with ITO / m-MTDATA-NPB / NPB / MADN / Rubrene-R / Alq3 / Al has an effect on the performance of yellow OLED devices. The experimental results show that the OLED device with carbon quantum dot function layer is superior to the typical OLED device in luminance and luminous efficiency. Carbon quantum dots (QDs) as phosphors were prepared and the conversion luminescent devices with carbon QDs as phosphors were studied. Based on the inhibition of starch on the luminescence quenching of carbon quantum dots, the phosphors based on starch were prepared. Blue OLED devices with a wavelength of 463 nm have been fabricated in this paper. Under the excitation of OLED devices, the phosphors exhibit stable green emission. In addition, the influence of phosphor thickness on the spectrum and chromaticity of the device was studied by changing the thickness of phosphor coating. Finally, when the phosphor thickness is 1 mm, the phosphor exhibits green emission with a color coordinate of (0.35 ~ 0.46). Experimental results show that carbon quantum dot phosphors can effectively change the spectrum and chroma of the device and realize the modulation of light. The effect of nickel oxide nanostructure anode buffer layer on the performance of blue light OLED devices was investigated. By measuring and characterizing the morphology of nio particles, it is found that the nio particles prepared by electrochemical deposition have good nanostructures. According to the different deposition time of Ni film, four groups of comparative experiments were prepared in this paper. The experimental results show that the nio buffer layer of nanostructure can effectively improve the efficiency of hole injection and thus increase the generation and recombination efficiency of hole electron pairs. Finally, when the deposition time of Ni film is 30 s, the luminescence performance of the device is the best. OLED devices based on PET and glass substrates were fabricated, and the effects of flexible substrate materials on the properties of the devices were investigated. The experimental results show that the multilayer devices based on PET substrate exhibit good luminescence characteristics. However, compared with rigid substrate devices, flexible devices still lack luminance, luminous efficiency and current density. Aiming at the existing problems of flexible devices, the measures of adding SiO2 layer between flexible substrate material and anode material are put forward in this paper. Finally, two kinds of flexible OLED device packaging techniques are introduced, one is to fabricate thin film barrier layer on the device, the other is to add flexible cover plate to the substrate and functional layer. The two packaging technologies provide reference for improving the performance of flexible display.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN383.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前6條
1 任曉偉;周亮;田曉語;張勇;;利用瞬態(tài)熒光技術(shù)研究單重態(tài)激子裂變的分子間距依賴關(guān)系[J];科學(xué)通報(bào);2016年31期
2 李術(shù)元;王劍秋;錢家麟;;世界油砂資源的研究及開發(fā)利用[J];中外能源;2011年05期
3 ;Influence of PVK:NPB hole transporting layer on the characteristics of organic light-emitting devices[J];Optoelectronics Letters;2008年03期
4 聶海,張波,唐先忠,李元?jiǎng)?摻雜型異質(zhì)結(jié)有機(jī)電致發(fā)光二極管及其穩(wěn)定性[J];光電子·激光;2005年09期
5 尹秉勝,馬厚義,陳慎豪;電化學(xué)技術(shù)制備納米材料研究的新進(jìn)展[J];化學(xué)進(jìn)展;2004年02期
6 王銀川;真空鍍膜技術(shù)的現(xiàn)狀及發(fā)展[J];現(xiàn)代儀器;2000年06期
，本文編號(hào)：2125252
本文鏈接：http://sikaile.net/kejilunwen/dianzigongchenglunwen/2125252.html
最近更新
教材專著
