微纳光栅结构提高OLED器件性能的研究  

Micro/nano grating structures for improving the performance of organic light emitting diode

作　　者：朱忠昶 王帅 石超君[1,2] 李淑红 王文军[1,2] 刘云龙[1,2] ZHU Zhongchang;WANG Shuai;SHI Chaojun;LI Shuhong;WANG Wenjun;LIU Yunlong(School of Physical Science and Information Technology,Liaocheng University,Liaocheng,Shandong 252059,China;Shandong Provincial Key Laboratory of Optical Communication Science and Technology,Liaocheng University,Liaocheng,Shandong 252059,China)

机构地区：[1]聊城大学物理科学与信息工程学院,山东聊城252059 [2]聊城大学山东省光通信科学与技术重点实验室,山东聊城252059

出　　处：《光电子．激光》2022年第5期471-478,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61775089);山东省自然科学基金(ZR2017BF009);聊城大学项目(318011904,318051650)资助项目。

摘　　要：有机发光二极管(organic light emitting diode,OLED)具有重量轻、功耗低、响应时间快及具有柔性等特点,在平板显示及固态照明等方面均显现出巨大的优势。为进一步提高OLED器件性能,本文利用ExpertOLED仿真软件对具有不同光栅结构的实际OLED器件进行仿真模拟,分析不同结构的微纳光栅对双金属电极OLED器件电致发光((electroluminescent,EL)光谱、发光视角及器件内部电场强度分布的影响。通过优化,得到增强器件发光强度和拓宽发光视角的微纳光栅结构。在不同的光栅周期下,改变光栅高度对器件的发光性能有不同的影响。调节发光层中分子偶极取向,优化器件内部电场强度分布,可进一步对器件的发光性能进行优化,从而为实验上利用周期性微纳光栅结构提高OLED器件性能提供了具有价值的参考。Organic light emitting diode(OLED) devices possess the characteristics of light weight,low power consumption,high response speed and flexibility.They have shown the great superiority in the flat panel display and solid-state lighting.In order to enhance the performance of OLED devices,the Expert OLED software was used to simulate the actual OLED devices with different grating structures.The electroluminescent(EL) spectrum,the luminous angle and the electric field distribution were analyzed in the OLED devices with bimetal electrodes.The optimized micro/nano grating structures was obtained.And for OLEDs with different grating periods,the varied grating height has different effects on the luminescence performance.We can also improve the luminescence performance by adjusting the molecular dipole orientation of emitting layer and optimizing the electric field distribution in the OLEDs.This work provides a valuable reference on improving the performance of OLEDs by using the optimized periodic micro/nano grating structures.

关 键 词：微纳光栅 ExpertOLED仿真软件 电致发光(electroluminescent EL) 发光视角 

分 类 号：TN312.8[电子电信—物理电子学]