Improvement of OLED properties with the AlN insulated layer

Chunling Liu; Jin Wang; Chunwu Wang; Lei Zhao; Wenlong Jiang

doi:10.1117/12.871371

15 November 2010 Improvement of OLED properties with the AlN insulated layer

Chunling Liu, Jin Wang, Chunwu Wang, Lei Zhao, Wenlong Jiang

Proceedings Volume 7852, LED and Display Technologies; 78521G (2010) https://doi.org/10.1117/12.871371
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The thin aluminum nitride(AlN) film using as an insulating layer was inserted between the anode (ITO) and the NPB organic film in the organic light-emitting devices(OLED) for the structure being K9/ITO/AlN/NPB/Alq₃/LiF/Al.The effect of the different thickness AlN film on the device performance was investigated. After optimization, improvement of OLEDs properties is biggest when the AlN film thickness is about 0.4nm.Such a structure with AlN layer facilitates the increase of current density and decrease of threshold voltage, resulting in an improved luminance and energy efficiency. The average luminance increased by about 30% and an improvement of 21.8% on the average current density. The lifetime experiment of the devices has proved an improvement on stability because of inserted AlN film. This phenomenon is mainly because of the insulating capability of the aluminum nitride coating and the passivation role of AlN film to the ITO surface. The processing is simple and high efficient, can be widely applied to the OLED devices.

Citation Download Citation

Chunling Liu, Jin Wang, Chunwu Wang, Lei Zhao, and Wenlong Jiang "Improvement of OLED properties with the AlN insulated layer", Proc. SPIE 7852, LED and Display Technologies, 78521G (15 November 2010); https://doi.org/10.1117/12.871371

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available