Yb∶MgAg纳米双层阴极的光电特性改善  

Optoelectronic Characteristics Improvement of Nano-bilayer Cathode Yb∶MgAg

作　　者：张金中 李坚 胡海兵 关立伟 ZHANG Jinzhong;LI Jian;HU Haibin;GUAN Liwei(EV Technology Dept.Chongqing BOe Display Technology Co.,Ltd.,Chongqing 400714;Ordos Yuansheng Optoelectronics Co.,Ltd.,Ordos 017020)

机构地区：[1]重庆京东方显示技术有限公司,重庆400714 [2]鄂尔多斯市源盛光电有限责任公司,鄂尔多斯017020

出　　处：《材料导报》2019年第A01期297-299,共3页Materials Reports

摘　　要：MgAg纳米合金作为有机电致发光阴极,具有功函数低、稳定性高等优点,而提升Ag的比例,降低MgAg纳米合金的厚度,可提升MgAg的透过率。在蒸镀MgAg纳米合金之前先沉积Yb纳米金属薄层,可降低阴极功函数,减少接触势垒,改善器件效率。实验表明,在Yb膜厚为5?、MgAg膜厚为120?、Ag比例为70%的条件下,器件效率能达到红色41.4cd/A,绿色94.9cd/A,蓝色103.4cd/A/CIEy,并具有较低的功耗和较长的寿命。As organic light emitting cathode,MgAg nano-alloy has the advantages of low work function and high stability. Increasing the ratio of Ag and reducing the thickness of MgAg nano-alloy can improve the transmittance of MgAg. Embedding Yb nano-metal layer before MgAg nano-alloy can reduce cathode work function,reduce contact barrier and improve device efficiency. ExpEriments show that under Yb 5?/MgAg 120 ?,the device efficiency can reach red 41.4 cd /A,green 94.9 cd /A,blue 103.4 cd /A/CIEy,with low power consumption and long life.

关 键 词：有机电致发光二极管(OLED)镁银合金 阴极 透过率 稀有金属镱 

分 类 号：TN873.3[电子电信—信息与通信工程]