Low doping white phosphorescent organic light-emitting diodes

Yadong Jiang; Jun Wang; Shuangling Lou; Hui Lin; Junsheng Yu

doi:10.1117/12.783572

14 November 2007 Low doping white phosphorescent organic light-emitting diodes

Yadong Jiang, Jun Wang, Shuangling Lou, Hui Lin, Junsheng Yu

Proceedings Volume 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 67223Z (2007) https://doi.org/10.1117/12.783572
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Efficient white organic light-emitting diodes (OLEDs) based on a novel phosphorescent material (t-bt)₂Ir(acac) with a structure ITO/CuPc (15 nm)/NPB (15 nm)/CBP : (t-bt)2Ir(acac) (30 nm, x%)/ BCP (20 nm)/Alq (20 nm)/LiF (1 nm)/Al (100 nm) were fabricated. (t-bt)2Ir(acac) lightly doped in a host material CBP was used as a yellow emitting layer and fluorescent material NPB was used as a blue emitting layer as well as a conventional hole transporting material. Low doping concentration (1%) device showing white light emission from 6 V to 14 V has a maximum efficiency 1.6 lm/W at 8 V and a maximum luminance of 4360 cd/m² at 13 V. High doping concentration (2% and 5%) devices emit strong yellow light under low bias and change to white light emission above 10 V bias although they show higher efficiency and luminance than 1% doping concentration device.

Citation Download Citation

Yadong Jiang, Jun Wang, Shuangling Lou, Hui Lin, and Junsheng Yu "Low doping white phosphorescent organic light-emitting diodes", Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 67223Z (14 November 2007); https://doi.org/10.1117/12.783572

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