Colour tunability of polymeric light-emitting diodes with top emission architecture

X. T. Hao*, Furong Zhu, K. S. Ong, L. W. Tan

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

10 Citations (Scopus)


Polymeric light-emitting diodes (PLEDs) have been fabricated with top emissive architecture and a shift of the light emission wavelength is observed for a single emitting material - phenyl-substituted poly(p-phenylenevinylene) (Ph-PPV). The device is built on a glass substrate and its structure consists of a bi-layer anode (including a high reflective metal thin film and indium tin oxide anode - ITO thin film), polymer stack and semitransparent multi-layer cathodes. Poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene) (PEDOT: PSS) and Ph-PPV are employed as the hole transport layer and light-emitting layer, respectively. Changes in the electroluminescence (EL) characteristics of the PLEDs are examined by adjusting the ITO thickness. The EL peaks of the devices with a single emissive layer have a wide variation in the wavelength range, from 547 to 655 nm, due to the different ITO thicknesses.

Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalSemiconductor Science and Technology
Issue number1
Early online date22 Nov 2005
Publication statusPublished - Jan 2006

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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