Preparation and characterization of phosphorescence organic light emitting diodes using PVK:Ir(ppy)3 emission layer

Hak Min Lee; Su Cheol Gong; Ji Geun Chang; Sang Ouk Ryu; Myoung Sun Gong; Jun Yeop Lee; Young Chul Chang; Ho Jung Chang

doi:10.1117/12.808331

16 February 2009 Preparation and characterization of phosphorescence organic light emitting diodes using PVK:Ir(ppy)₃ emission layer

Hak Min Lee, Su Cheol Gong, Ji Geun Chang, Sang Ouk Ryu, Myoung Sun Gong, Jun Yeop Lee, Young Chul Chang, Ho Jung Chang

Author Affiliations +

Proceedings Volume 7213, Organic Photonic Materials and Devices XI; 72131B (2009) https://doi.org/10.1117/12.808331
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

The phosphorescence polymer LEDs (PhPLEDs) with the structure of ITO/PEDOT:PSS/PVK:Ir(ppy)₃/TPBI/LiF/Al were fabricated and investigated on the electrical and optical properties at variations doping concentrations (0.5wt% to 2.5wt%) of Ir(ppy)₃. PVK(poly-vinylcarbazole) and Ir(ppy)₃[tris(2-phenylpyridine)iridium(III)] polymers were used as the host and guest materials for the emission layer. TPBI was introduced to improve the light efficiency of the devices. The maximum luminance and current density for PhPLED were about 8600 cd/m² and 155 mA/cm² at 7 V, when the TPBI layer was introduced between emission and cathode electrode film. The emission spectrum and the CIE color coordinator were about 512nm and x, y = 0.28, 0.63, respectively, showing green color.

Citation Download Citation

Hak Min Lee, Su Cheol Gong, Ji Geun Chang, Sang Ouk Ryu, Myoung Sun Gong, Jun Yeop Lee, Young Chul Chang, and Ho Jung Chang "Preparation and characterization of phosphorescence organic light emitting diodes using PVK:Ir(ppy)₃ emission layer", Proc. SPIE 7213, Organic Photonic Materials and Devices XI, 72131B (16 February 2009); https://doi.org/10.1117/12.808331

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