OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 14 — Jul. 15, 2013
  • pp: 2373–2375

Efficient red organic electroluminescent devices by doping platinum(II) Schiff base emitter into two host materials with stepwise energy levels

Liang Zhou, Chi-Chung Kwok, Gang Cheng, Hongjie Zhang, and Chi-Ming Che  »View Author Affiliations


Optics Letters, Vol. 38, Issue 14, pp. 2373-2375 (2013)
http://dx.doi.org/10.1364/OL.38.002373


View Full Text Article

Enhanced HTML    Acrobat PDF (456 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

In this work, organic electroluminescent (EL) devices with double light-emitting layers (EMLs) having stepwise energy levels were designed to improve the EL performance of a red-light-emitting platinum(II) Schiff base complex. A series of devices with single or double EML(s) were fabricated and characterized. Compared with single-EML devices, double-EML devices showed improved EL efficiency and brightness, attributed to better balance in carriers. In addition, the stepwise distribution in energy levels of host materials is instrumental in broadening the recombination zone, thus delaying the roll-off of EL efficiency. The highest EL current efficiency and power efficiency of 17.36cd/A and 14.73lm/W, respectively, were achieved with the optimized double-EML devices. At high brightness of 1000cd/m2, EL efficiency as high as 8.89cd/A was retained.

© 2013 Optical Society of America

OCIS Codes
(160.6990) Materials : Transition-metal-doped materials
(230.3670) Optical devices : Light-emitting diodes
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Materials

History
Original Manuscript: March 28, 2013
Revised Manuscript: June 1, 2013
Manuscript Accepted: June 6, 2013
Published: July 3, 2013

Citation
Liang Zhou, Chi-Chung Kwok, Gang Cheng, Hongjie Zhang, and Chi-Ming Che, "Efficient red organic electroluminescent devices by doping platinum(II) Schiff base emitter into two host materials with stepwise energy levels," Opt. Lett. 38, 2373-2375 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-14-2373

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited