[KSCI] Korea Science Citation Index Service

Energy Transfer and Device Performance in Polymer Based Electrophosphorescent Light Emitting Diodes and Effect of Ligand Modification in the Optical and Electrical Properties of Phosphorescent Dyes

Lee Chang-Lyoul (School of Materials Science and Engineering, Center for Organic Light Emitting Diodes, Seoul National University)
Das R. R. (Samsung Advanced Institute of Technology)
Noh Young-Yong (Department of Materials Science and Engineering, Gwangju Institute of Science and Technology)
Kim Jang-Joo (School of Materials Science and Engineering, Center for Organic Light Emitting Diodes, Seoul National University)

Publication Information

Polymer(Korea) / v.29, no.2, 2005 , pp. 107-121 More about this Journal

Abstract

Electrophosphorescent light emitting diodes (LEDs) using phosphorescent dyes as triplet emitter, which incorporate a heavy metal atom to mix singlet and triplet states by the strong spin-orbit coupling, can achieve the theoretically $100\%$ internal quantum efficiency. In this paper, we report on the performance and the energy transfer mechanism of polymer based highly efficient electrophosphorescent LEDs. The effect of phase separation and aggregation to the energy transfer between polymer hosts and phosphorescent guests and performance of polymer electrophosphorescent LEDs were investigated. Finally, the effect of introducing substitute group and ligand modification of phosphorescent dyes on optical and electrical properties are reported.

Keywords

Citations & Related Records

Times Cited By Web Of Science : 0 (Related Records In Web of Science)
Times Cited By SCOPUS : 0

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