Alternating-current polymer light-emitting devices

Xuejun Hu; Haishu Tan

doi:10.1117/12.523214

12 May 2004 Alternating-current polymer light-emitting devices

Xuejun Hu, Haishu Tan

Proceedings Volume 5280, Materials, Active Devices, and Optical Amplifiers; (2004) https://doi.org/10.1117/12.523214
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

Alternating current polymer light emitting devices (PLEDs) have attracted much attention because ac operation can partially reverse electrochemical reaction at interfaces and a longer lifetime is expected over dc operation. Most ac PLEDs to date are based on symmetrical structure. Here novel alternating current EL devices with asymmetric structure are successfully fabricated by using a hole type polymer PDDOPV [poly (2,5-bis (dodecyloxy)-phenylenevinylene)] and an electron type polymer PPQ [poly (phenyl quinoxaline)]. Two devices with following structure were made, Device 1: ITO/PDDOPV(70nm)/PPQ(40nm)/Al, Device 2: ITO/PDDOPV(100nm)/PPQ(70nm)/Al. Both devices can be operated at forward and reverse dc bias and ac modes but the performance of Device 1 is much better than that of Device 2. Emitting intensity of both devices at forward dc bias was several magnitude orders stronger than that at reverse dc bias. Both the highest luminescent intensity and efficiency of Device 1 at ac operation were the same magnitude order as those at dc operation, but those of Device 2 at ac operation were about 1 magnitude order higher than those at dc operation. Contribution from PPQ increases with the increase of applied voltage.

Citation Download Citation

Xuejun Hu and Haishu Tan "Alternating-current polymer light-emitting devices", Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.523214

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Electroluminescence

Polymers

Light emitting diodes

Organic light emitting diodes

Interfaces

Thin films

Excitons

Show All Keywords

Keywords/Phrases

Search In:

Publication Years