Search for content and authors |
Lifetime improvement of organic light-emitting diodes using silicon oxy-nitride as anode modifier |
Fu Lung Wong 1, Mee Yee Chan 1, Shui Lun Lai 1, Man Keung Fung 1, Ka Ho Lai 1, Wai Man Tsang 1, Tze Wai Ng 1, Chong On Poon , Chun Sing Lee 1, Shuit Tong Lee 1 |
1. City university of Hong Kong (CityU), Tat Chee Avenue, Kowloon, Hong Kong, Hong Kong |
Abstract |
Silicon oxy-nitride (SiOxNy) films prepared by radio-frequency magnetron sputtering were investigated as an anode modifier in organic light-emitting diodes (OLEDs). SiOxNy films were deposited between ITO and the hole transport layer of an OLED with a configuration of indium tin oxide (ITO)/SiOxNy/α-naphtylphenyliphenyl diamine (NPB) /8-hydroxyquinoline aluminum (AlQ)/Mg:Ag. By varying the argon and oxygen flow ratio during deposition of SiOxNy films, devices with improved electroluminescent performance and operation lifetime were obtained. The atomic composition of the SiOxNy films were analyzed by X-ray Photoelectron Microscopy. The best device with the optimal SiOxNy film showed a half brightness lifetime 5 times better than the control device. |
Legal notice |
|
Presentation: Poster at E-MRS Fall Meeting 2007, Symposium H, by Fu Lung WongSee On-line Journal of E-MRS Fall Meeting 2007 Submitted: 2007-05-04 09:41 Revised: 2009-06-07 00:44 |