• Abstract
• Full-Text PDF [448 KB]
• Article Versions Notes

• Article Statistics
• Google Scholar
• Order Reprints

• Cite this article
• Export to BibTeX
• Export to EndNote

• [+] on DOAJ
• Chen, R
• Wang, C
• Li, S
• George, TF.
• [+] on Google Scholar
• Chen, R
• Wang, C
• Li, S
• George, TF.
• [+] on PubMed
• Chen, R
• Wang, C
• Li, S
• George, TF.

•  CiteULike
•  Facebook
•  Mendeley
•  Twitter

This article is

• freely available
• re-usable

Materials 2013, 6(3), 886-896; doi:10.3390/ma6030886

Article

Electronic Two-Transition-Induced Enhancement of Emission Efficiency in Polymer Light-Emitting Diodes

Ren-Ai Chen ^1,2 , Cong Wang ¹ , Sheng Li ^1,2,3,*  and Thomas F. George ^3,*

¹ Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang 321004, China ² Department of Physics, Fudan University, Shanghai 321004, China ³ Office of the Chancellor and Center for Nanoscience, Departments of Chemistry & Biochemistry and Physics & Astronomy, University of Missouri—St. Louis, St. Louis, MO 63121, USA

* Authors to whom correspondence should be addressed.

Received: 16 November 2012; in revised form: 21 February 2013 / Accepted: 27 February 2013 / Published: 6 March 2013

(This article belongs to the Special Issue Conjugated Polymers 2012)

Download PDF Full-Text [448 KB, uploaded 6 March 2013 09:17 CET]

Abstract: With the development of experimental techniques, effective injection and transportation of electrons is proven as a way to obtain polymer light-emitting diodes (PLEDs) with high quantum efficiency. This paper reveals a valid mechanism for the enhancement of quantum efficiency in PLEDs. When an external electric field is applied, the interaction between a negative polaron and triplet exciton leads to an electronic two-transition process, which induces the exciton to emit light and thus improve the emission efficiency of PLEDs.

Keywords: light-emitting diodes; polymers; excitons

Article Statistics

Cite This Article