本文選題：碳納米管　切入點：氧化石墨烯　出處：《天津工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：隨著人們?nèi)粘Ｉ顚τ谌嵝燥@示器、觸摸屏、太陽能電池和便攜式儲能電子器件等需求的不斷上升,柔性可彎折透明導電薄膜(TCFs)的需求也正日益增大。傳統(tǒng)發(fā)光器件的導電薄膜多采用銦錫氧化物(ITO)薄膜,通常由磁控濺射法制備,需要高真空環(huán)境,同時隨著稀有金屬銦的含量日漸減少使得ITO薄膜成本日益增加,并且ITO薄膜柔性較差,剛性易碎等因素都使得其在未來柔性顯示領(lǐng)域受到極大限制。碳納米管(CNTs)由于較高的電導率和優(yōu)異的柔性,極高、極強的力學性能(約1-2 TPa的楊氏模量),剛度好,導熱性能優(yōu)異。一定量的碳納米管沉積在透明基底上即可形成一層隨機的網(wǎng)絡(luò)結(jié)構(gòu),組成低面電阻、高透光性的透明電極。但由于一維材料的維度限制,CNTs所形成的網(wǎng)絡(luò)結(jié)構(gòu)是疏松多重搭接結(jié)構(gòu),其結(jié)構(gòu)相對不穩(wěn)定,因此其在基底上的附著力較差,同時一維搭接結(jié)構(gòu)形成的電極表面粗糙度較高,不利于其在OLED等光電子器件當中的應(yīng)用。而作為新興的二維碳納米材料的氧化石墨烯(GO)則具有很多優(yōu)異的特性,平面狀的結(jié)構(gòu)本身具有非常高的平整度,可以對一維CNT網(wǎng)狀的結(jié)構(gòu)缺陷進行有效填補,并且由于其表面含有大量的含氧官能團,可以極大增強薄膜表面的潤濕性,有利于進一步的溶液法制備器件,同時可以增大原始薄膜的表面功函數(shù),利于載流子的注入等等。本文首先采用更易大規(guī)模生產(chǎn)的噴涂法制備性能優(yōu)異的氧化石墨烯/碳納米管(GO/CNTs)摻雜透明導電薄膜,分別從不同濃度摻雜以及不同GO片徑分離摻雜的角度進行了探究,建立了載流子在摻雜電極當中的傳導模型,同時GO摻雜還給透明導電薄膜的表面平整度、界面潤濕性以及附著力等其他諸多性能帶來了很大提升,并進行了機理上的分析探究,這些性能的提升十分有利于后期通過溶液法應(yīng)用于光電子器件當中。將制備得到的GO/CNTs摻雜透明導電薄膜作為陽極制備基于Alq3的綠光有機發(fā)光二極管,重點討論了摻雜電極光電特性、表面平整度以及界面潤濕性給器件帶來的性能提升以及機理解釋,同時在空穴傳輸層采用PVK:TPD大分子與小分子結(jié)合的空穴傳輸層進行輔助,提高了空穴注入的傳輸?shù)男省?br/>[Abstract]:With the increasing demand for flexible displays, touch screens, solar cells and portable energy storage electronics in our daily lives, The demand for flexible flexural transparent conductive thin film (TCFs) is also increasing. The conductive films of traditional luminescent devices are mostly indium tin oxide oxide (ITO) thin films, which are usually prepared by magnetron sputtering, and need high vacuum environment. At the same time, with the decreasing of indium content in rare metal, the cost of ITO film is increasing, and the flexibility of ITO film is poor. Due to its high electrical conductivity and excellent flexibility, the mechanical properties of CNTs are extremely high (about 1-2 TPa's Young's modulus, good stiffness). Excellent thermal conductivity. A certain amount of carbon nanotubes deposited on a transparent substrate can form a random network structure to form a low surface resistance. Transparent electrodes with high transmittance. However, due to the dimensional constraints of one-dimensional materials, the network structure formed by CNTs is loose and multiple overlapped structures, its structure is relatively unstable, so its adhesion on the substrate is poor. At the same time, the surface roughness of the electrode formed by one-dimensional lap structure is relatively high, which is not conducive to its application in optoelectronic devices such as OLED, while the graphene oxide (GOO), as a new two-dimensional carbon nano-material, has many excellent properties. The planar structure itself has a very high smoothness, which can effectively fill the defects of one-dimensional CNT network structure, and because of the large number of oxygen-containing functional groups on the surface, the wettability of the film surface can be greatly enhanced. It is beneficial to the fabrication of the device by further solution method, and can increase the surface work function of the original film at the same time. In this paper, graphene oxide / carbon nanotube doped transparent conductive films with excellent properties are prepared by spray method which is easier to produce in large scale. In this paper, the conduction model of carrier in doped electrode was established from the angle of doping with different concentrations and different diameters of go chip, and the surface smoothness of transparent conductive film was also obtained by go doping. Many other properties, such as interface wettability and adhesion, have been greatly improved, and the mechanism has been analyzed and explored. The improvement of these properties is very beneficial to the later application in optoelectronic devices by solution method. GO/CNTs doped transparent conductive thin films are used as anode to fabricate green light emitting diodes (Alq3) based on green light emitting diodes (OLEDs). The optical and electrical properties of the doped electrode, the surface smoothness and the wettability of the interface are discussed in detail. At the same time, the hole transport layer of PVK:TPD macromolecule and small molecule is used to assist in the hole transport layer. The transmission efficiency of hole injection is improved.
【學位授予單位】：天津工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：O613.71;TN383.1

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