CdSe量子点发光二极管制备及阵列串扰研究

发布时间：2018-01-03 19:22

本文关键词：CdSe量子点发光二极管制备及阵列串扰研究　出处：《吉林大学》2015年硕士论文　论文类型：学位论文

【摘要】：近年来量子点发光二极管（QD-LED）的研究取得了很多突破性的进展，而使用CdSe量子点作为发光材料制作QD-LED得到了更多更广泛的关注。目前，红、绿、蓝CdSe QD-LED的最大亮度分别为31000cd/m2，68000cd/m2和4200cd/m2。此外，由于量子点具有发射带宽窄，光稳定性好，荧光寿命长，尺寸可调的优点，在显示领域有不可限量的应用前景。本文主要研究了CdSe量子点发光二极管（LED）的原理、制作过程和性能，同时探索了阵列化QD-LED的问题和解决方案。首先我们使用连续离子吸附法进行CdSe/CdS/ZnS核壳结构量子点的合成，再用合成的量子点进行LED器件的制作，量子点LED是以量子点作为发光层，，同时使用有机聚三苯胺(Poly-TPD)为空穴传输层、ZnO为电子传输层的电致发光器件。我们对LED的亮度、效率、寿命均进行了测试，分析并优化了LED的性能。此外，我们还制作了以石墨烯为阳极的量子点LED，并对以石墨烯和ITO为阳极的量子点LED进行了发光效率和亮度的对比，验证了石墨烯作为导电膜的光明前景。不仅如此，还在量子点LED的基础上制作了8段位码和5×5点阵的LED显示器件，制作过程中，发现严重串扰问题，最终我们使用MoOx代替PEDOT作为空穴注入层，解决PEDOT横向导电性过强引起的串扰问题，并且探讨了8段位码量子点显示器件的均一性，这种表面均一的量子点LED表明了量子点在显示屏领域的应用前景。
[Abstract]:In recent years, the quantum dot light-emitting diode (QD-LED) has made progress in many groundbreaking research, using CdSe quantum dots as luminescent materials for making QD-LED has been more extensive attention. At present, red, green and blue CdSe QD-LED maximum brightness were 31000cd/m268000cd/m2 and 4200cd/m2., in addition, because quantum dots have emission band width. Good light stability, long life, the advantages of adjustable size, application prospect in the field of display is limitless.
This paper mainly studies the CdSe quantum dot light-emitting diode (LED) principle, fabrication process and performance, while exploring the QD-LED array of problems and solutions. First we use continuous ion adsorption method for synthesis of CdSe/CdS/ZnS core-shell quantum dots, making LED devices for the synthesis of quantum dots and quantum dots, LED using quantum dots as the emitting layer, and the use of organic poly three aniline (Poly-TPD) as the hole transport layer, an electron transport layer of ZnO electroluminescent devices. The LED brightness, efficiency and lifetime were tested, analyzed and optimized the performance of LED.
In addition, we also fabricated with graphene as anode and LED quantum dots, the graphene and ITO quantum dots as anode LED compared luminous efficiency and brightness, verify the bright prospects of graphene as a conductive film. Moreover, based on the preparation of LED quantum dots in the LED display 8 bit code and 5 * 5 dot matrix, the production process, found serious crosstalk problems, finally we use MoOx instead of PEDOT as hole injection layer, PEDOT transverse conductivity caused by strong crosstalk, and discusses the homogeneity of 8 Dan code quantum dot displays, quantum dots on the surface of uniform LED show that the application of quantum dots in the display field.

【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN312.8

【共引文献】