Air Stability of Cs2CO3:Ag/Ag Cathode for Organic Light-Emitting Diodes

作者：Liu Qian^*; Duan Lian; Zhang De Qiang; Qiao Juan; Wang Li Duo; Qiu Yong

来源：Chinese Physics Letters, 2009, 26(10): 106801.

DOI：10.1088/0256-307x/26/10/106801

We report the superior stability of the composite Cs2CO3:Ag/Ag cathode structure, which can be used in efficient organic light-emitting diodes (OLEDs). Devices with the Cs2CO3:Ag (1:10, 5 nm)/Ag (95 nm) cathode show a considerably improved lifetime compared with the control device with the Cs2CO3 (0.5 nm)/Ag (100 nm) cathode. The composite Cs2CO3:Ag/Ag film is proved to be stable in the atmosphere. X-ray diffraction (XRD) is applied to analyze the crystalline structure of the Cs2CO3:Ag film, and it is demonstrated that CsAg alloy is formed, leading to the improved stability of the thin film and the devices.

• 出版日期2009-10
• 单位清华大学