High brightness and efficiency blue light-emitting polymer diodes

A. W. Grice, D. D.C. Bradley, M. T. Bernius, M. Inbasekaran, W. W. Wu, E. P. Woo

Research output: Contribution to journalArticlepeer-review

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Efficient blue electroluminescence, peaked at 436 nm, is demonstrated from polymer light-emitting diodes operating at high brightness. A dioctyl-substituted polyfluorene was used as the emissive layer in combination with a polymeric triphenyldiamine hole transport layer. The luminance reaches 600 cd/m2 at a current density of 150 mA/cm2 for a bias voltage of 20 V, corresponding to an efficiency of 0.25 cd/A and a luminosity of 0.04 lm/W. These values are optimized at a critical emissive layer thickness. © 1998 American Institute of Physics.
Original languageEnglish (US)
JournalApplied Physics Letters
Issue number5
StatePublished - Dec 1 1998
Externally publishedYes


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