Mixing effect of chelate complex and metal in organic light-emitting diodes

Jae Gyoung Lee, Youngkyoo Kim, Sei Hum Jang, Soon Nam Kwon, Kwangho Jeong

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Organic light-emitting diodes using thin film dispersing a hole transport material into a soluble polyimide as a hole transport layer and the sublimed molecular film of a chelate complex as an emissive layer were fabricated. In order to improve the injection of electrons into the emissive layer as well as the durability of devices, we have attempted mixing the chelate complex and metal between the emissive layer and the cathodic electrode. The charge injection of the device with the mixed layer was initialized at an applied voltage of 4.19 V. It was observed from the electroluminescent spectra that the oscillator strength was dramatically enhanced with the applied voltage.

Original languageEnglish
Pages (from-to)1757-1759
Number of pages3
JournalApplied Physics Letters
Issue number14
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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