Progress in organic nrnltilayer electroluminescent devices

Shogo Saito, Tetsuo Tsutsui, Masanao Era, Noriyuki Takada, Chihaya Adachi, Yuji Hamath, Takeo Wakimoto

Research output: Contribution to journalConference articlepeer-review

52 Citations (Scopus)

Abstract

Survay of dye materials for the emission layer in the multilayer organic electroluminescent (EL) device is discussed in terms of emission color and fluorescent efficiency. Organic semiconductors for the electron or the hole transport layer in the EL device are proposed for preparing stable homogeneous thin layer. Requirement of accomplishing the confinement of the singlet excitons generated by the recombinations of injected electrons and holes is discussed by using three layer EL devices with extremely thin bimolecular emission layer. Then the emphasis is laid on the size effects in three layer EL device with double heterojunctions on the spontaneous emission. Variations of the intensity and pattern of outer emission through semitransparent ITO glass substrate with the spacing between the emission layer and the metallic electrode are discussed theoretically and experimentally. And variation of the fluorescent lifetime or the radiative decay rate with the spacing is also discussed theoretically and experimentally.

Original languageEnglish
Pages (from-to)212-221
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1910
DOIs
Publication statusPublished - Aug 27 1993
Externally publishedYes
EventElectroluminescent Materials, Devices, and Large-Screen Displays 1993 - San Jose, United States
Duration: Jan 31 1993Feb 5 1993

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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