White-light OLED devices play an important application in information display fields. Optical interference of the microcavity structure has an important effect on device performances. According to the design of the band structure, ITO/MoO₃ composite films were used as the anode, and Mg : Ag (1%) composite films were prepared by coevaporation as the translucent cathode; CuPc was used as the hole injection layer and anode passivation layer, NPB as the hole transmission layer and yellow light main material, rubrene as yellow dopant material, ADN as blue light main material, DSA-Ph as blue dopant material, and TPBi and Alq3 as the electron transport layers. We realized the change of the microcavity structure by adjusting the thickness of each organic functional layer film and simulated and calculated the optimized thickness of each organic film layer and influence on OLED device performances using the SimOLED software system. The optimized OLED microdisplay structure is Si_(CMOS)/ITO (35 nm)/MoO₃ (2 nm)/CuPc (5 nm)/2-TNATA (20 nm)/NPB (10 nm)/NPB : rubrene (1.5%)ADN : DSA-Ph (5%) (25 nm)/TPBi (15 nm)/Alq3 (1.2 nm)/Mg (13 nm) : Ag (1%). The optimized OLED microdisplay was prepared by the vacuum coating system, and the photoelectric performances of the OLED device were characterized by a spectral testing system consisting of the Photo Research PR655 spectrometer and Keithley 2400 program-controlled power supply. The effect of the microcavity structure on OLED device performances was studied. The results show that the variation of the film thickness of each organic functional layer has an important effect on the performances of OLED microdisplay, such as brightness and color coordinate, and the OLED microdisplay reaches a higher brightness of 3342 cd/m² under the normal working voltage at 5.0 V after the structure is optimized, with CIE coordinate (0.28, 0.37), which is closer to the energy point of standard white light.

中文翻译：

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基于微腔结构优化的白色OLED微显示器设计仿真与制备

白光OLED器件在信息显示领域中起着重要的应用。微腔结构的光学干涉对器件性能具有重要影响。根据能带结构的设计，ITO / MoO ₃以复合膜为阳极，通过共蒸发制备Mg：Ag（1％）复合膜为半透明阴极。CuPc被用作空穴注入层和阳极钝化层，NPB被用作空穴传输层和黄光主体材料，红荧烯作为黄光掺杂剂材料，ADN作为蓝光主体材料，DSA-Ph作为蓝光掺杂剂材料，TPBi和Alq3作为电子传输层。通过调整每个有机功能层薄膜的厚度，我们实现了微腔结构的变化，并使用SimOLED软件系统模拟并计算了每个有机薄膜层的优化厚度，并影响了OLED器件的性能。优化的OLED微显示器结构是Si _（CMOS） / ITO（35 nm）/ MoO ₃（2纳米）/ CuPc（5纳米）/ 2-TNATA（20纳米）/ NPB（10纳米）/ NPB：红荧烯（1.5％）ADN：DSA-Ph（5％）（25纳米）/ TPBi（15纳米） ）/ Alq3（1.2 nm）/ Mg（13 nm）：Ag（1％）。通过真空镀膜系统制备了优化的OLED微型显示器，并通过由Photo Research PR655光谱仪和Keithley 2400程控电源组成的光谱测试系统对OLED器件的光电性能进行了表征。研究了微腔结构对OLED器件性能的影响。结果表明，各有机功能层膜厚的变化对OLED微显示器的亮度和色坐标等性能都有重要影响，并且OLED微显示器的亮度达到3342 cd / m ²的更高。 优化结构后，在5.0 V的正常工作电压下，其CIE坐标（0.28，0.37）更接近标准白光的能量点。