Light emission optimization of europium based complex in multilayer organic light emitting diodes

G. Santos; F. J. Fonseca; A. M. Andrade; M. Peres; T. Monteiro; W. Simões; L. Pereira

doi:10.1117/12.734818

12 November 2007 Light emission optimization of europium based complex in multilayer organic light emitting diodes

G. Santos, F. J. Fonseca, A. M. Andrade, M. Peres, T. Monteiro, W. Simões, L. Pereira

Proceedings Volume 6655, Organic Light Emitting Materials and Devices XI; 66551U (2007) https://doi.org/10.1117/12.734818
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

In this work a detailed study of the electroluminescence of an Organic Light Emitting Diode based on Europium Complex is studied as a function of the emissive layer thickness and growth rate evaporation. The device structure is glass:ITO / TPD [N,N' - bis (3 - methylphenyl) - N,N' - diphenylbenzidine] / Eu(DBM)₃phen [tris (dibenzoylmethane) - mono (4,7-dimethylphenantroline) europium (III)] / Alq3 [aluminum - tris (8 - hydroxyquinoline)] / Aluminum. The minimum driving voltage is about 15 Volts although the electrical current is about only 2 mA (wall plug efficiency up to 0.002 %). The electroluminescence spectra and external efficiency are clearly dependent on the Eu (DBM)₃phen layer thickness and growth rate evaporation. This results in a strong color change (CIE coordinates). With these results, a model for the device opto-electrical behavior is presented, allowing the device final optimization.

Citation Download Citation

G. Santos, F. J. Fonseca, A. M. Andrade, M. Peres, T. Monteiro, W. Simões, and L. Pereira "Light emission optimization of europium based complex in multilayer organic light emitting diodes", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66551U (12 November 2007); https://doi.org/10.1117/12.734818

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