Study on the Effects of Yb: Ag Alloy Cathode on the Photoelectric Performance of the Top Emitting White Organic Light-emitting Devices

YANG Qiming; GAO Sibo; WANG Can; DUAN Liangfei; QIAN Fuli; DUAN Qian; ZHANG Jie; WANG Guanghua; LU Chaoyu; DUAN Yu

Volume 43 Issue 12

Dec. 2021

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Article Navigation > Infrared Technology > 2021 > 43(12): 1207-1211

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

Received Date: 2021-07-09
Rev Recd Date: 2021-08-20
Publish Date: 2021-12-20

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).
- Yb: Ag alloy,
- cathode,
- top emitting white OLED,
- photoelectric property

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References(11)

References

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