白光有机电致发光器件发光稳定性研究

发布时间：2018-04-01 01:26

本文选题：白光　切入点：有机电致发光器件(OLED)　出处：《光电子·激光》2017年06期

【摘要】：基于红绿/蓝双发光层,制作了结构为ITO/MoO3(10nm)/NPB(40nm)/TCTA(10nm)/CBP:R-4B(2%):GIR1(14%,X nm)/mCP:Firpic(8%,Y nm/BCP(10nm)/Alq3(40nm)/LiF(1nm)/Al(100nm)的白色全磷光有机电致发光器件(OLED),通过调节红绿发光层的厚度X与蓝光发光层的厚度Y,研究了不同发光层厚度器件发光性能的影响。研究发现:当X为23nm、Y为7nm时,器件的光效和色坐标都具有很高的稳定性,在电压分别为5、10和15 V时,色坐标分别为(0.33,0.37)、(0.33,0.37)和(0.34,0.38);在电压为5V时,电流密度为0.674mA,亮度为158.7cd,最大电流效率为26.87cd/A;利用电子阻挡材料TCTA和空穴阻挡材料BCP能够显著提高载流子的复合效率。分析认为:发光层顺序为红绿/蓝时,更有利于蓝光的出射,从而使白光的色坐标更稳定。
[Abstract]:Based on the red green / blue double luminescent layer, A white all-phosphorescence organic electroluminescent device, called ITO / MoO3 / 10nmt / TCTA10nmt / TCTA10nmt / CBPR-4BN / 2G: GIR11414 / X / mCP10 / 10nm / BCP10nmP / Alq340nmmt / LiF1nmnmt / / LiF1nmnm-1, has been fabricated. By adjusting the thickness of the red green layer X and the thickness of the blue photoluminescence layer Y, we have studied the effects of different thickness of luminescent layers on the luminescence properties of the devices. The effects of different thickness of luminescent layers on the luminescence properties of the devices have been studied by adjusting the thickness of the red and green layers and the thickness of the blue photoluminescence layer by adjusting the thickness of the red green layer and the thickness of the blue photoluminescence layer. Now: when X is 23nmY is 7nm, The light efficiency and color coordinate of the device are very stable. When the voltage is 5V and 15V, the chromatic coordinates are 0.33 ~ 0.37 ~ 0.37 ~ 0.37) and 0.344 ~ (0.38) ~ 0.38 ~ 0 respectively, and when the voltage is 5 V, the chromatic coordinates are 0.33 ~ (3) ~ (0.37) ~ (0.37) and 0.34 ~ (0.38) ~ (0.38), respectively. The current density is 0.674mA, the brightness is 158.7 cdand the maximum current efficiency is 26.87cd/ A. by using the electron barrier material TCTA and the hole barrier material BCP, the carrier recombination efficiency can be improved significantly. Thus, the color coordinates of white light are more stable.
【作者单位】：西藏大学农牧学院电气工程学院;
【基金】：国家自然科学基金(51541711)资助项目
【分类号】：TN383.1

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