TITLE

Color-tunable multilayer light-emitting diodes based on conjugated polymers

AUTHOR(S)
Huang, C.C.; Meng, H.F.; Ho, G.K.; Chen, C.H.; Hsu, C.S.; Huang, J.H.; Horng, S.F.; Chen, B.X.; Chen, L.C.
PUB. DATE
February 2004
SOURCE
Applied Physics Letters;2/16/2004, Vol. 84 Issue 7, p1195
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Wide-range low-voltage continuous color tuning is achieved in multilayer light-emitting diodes based exclusively on the commonly used high-efficiency electroluminescent conjugated polymers. There are three layers for red, green, and blue emission, and one extra layer for electron blocking. The color of the emitted photon depends on the position of the electron-hole recombination. Due to the stronger field dependence of the electron mobility relative to the hole mobility, the recombination zone is pushed away from the cathode and concentrated in different emissive layers as the voltage increases. © 2004 American Institute of Physics.
ACCESSION #
12202303

 

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