Effects of Chalcogenide Glasses Thin Film Encapsulation Layer on Lifetime of Organic Light Emitting Diodes

  • Fanghui, Zhang (College of Electrical and Information Engineering, Shaanxi University of Science & Technology) ;
  • Jianfei, Xi (College of Electrical and Information Engineering, Shaanxi University of Science & Technology)
  • 발행 : 2009.10.12

초록

In this paper, chalcogenide glasses material(Se, Te, Sb) is firstly used as encapsulation layer of OLEDs under high vacuum of $10^{-4}$Pa. In the experiments, properties of OLEDs encapsulated by Se, Te, Sb thin film is compared with that of device encapsulated by traditional method. It is found that Se, Te, Sb film can extend lifetime of devices to 1.4, 2, 1.3 times respectively. Chalcogenide glasses film as encapsulation layer has little effect on some characteristics of device. The research indicated that OLEDs can be well protected upon applying Se, Te, Sb film as encapsulation layer. It is clear that it can prolong the lifetime obviously.

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