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Volume 43 Issue 12
Dec.  2021
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YANG Qiming, GAO Sibo, WANG Can, DUAN Liangfei, QIAN Fuli, DUAN Qian, ZHANG Jie, WANG Guanghua, LU Chaoyu, DUAN Yu. Study on the Effects of Yb: Ag Alloy Cathode on the Photoelectric Performance of the Top Emitting White Organic Light-emitting Devices[J]. Infrared Technology , 2021, 43(12): 1207-1211.
Citation: YANG Qiming, GAO Sibo, WANG Can, DUAN Liangfei, QIAN Fuli, DUAN Qian, ZHANG Jie, WANG Guanghua, LU Chaoyu, DUAN Yu. Study on the Effects of Yb: Ag Alloy Cathode on the Photoelectric Performance of the Top Emitting White Organic Light-emitting Devices[J]. Infrared Technology , 2021, 43(12): 1207-1211.
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Study on the Effects of Yb: Ag Alloy Cathode on the Photoelectric Performance of the Top Emitting White Organic Light-emitting Devices

  • Yunman North OLiGHTEK Opto-Electronic Technology Co. Ltd, Kunming 650223, China

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  • Received Date: July 08, 2021
  • Revised Date: August 19, 2021
    Graphical Abstract
    • Abstract
  • Top-emitting white organic light-emitting diode(OLED) devices with a Mg: Ag alloy as a transparent cathode were fabricated. Based on the device structure of ITO/NPB: LiQ(5%) (10 nm)/TCTA(20 nm)/FIrpic+3.5% Ir(ppy)3+0.5%Ir(MDQ)2(acac) (25 nm)/TPBI(10 nm)/LiF(5 nm)/Yb: Ag (X%) (X nm), the top-emitting white OLED devices were prepared by using Yb: Ag alloy of different thickness as the cathode at the evaporation ratio of 10:1, the optimum thickness of Yb: Ag cathode was 12 nm by contrasting. The effect of different proportions of Yb: Ag alloy on OLEDs was investigated by changing the doping ratio of Ag. Based on the preliminary results, the alloy with a Ag mass fraction of 10% exhibits good electron injection characteristics, which can effectively improve the light-emitting characteristics of the device. When the current density was 20 mA/cm2, the driving voltage was 2.3 V, the brightness was 1406 cd/m2, and the color coordinates were close to (0.3407, 0.3922).
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    • References (11)
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