Effect of polymer-insulating nanolayers on electron injection in polymer light-emitting diodes

Jong Hyeok Park, O. Ok Park, Jae Woong Yu, Jai Kyeong Kim, Young Chul Kim

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The effects of polymer-insulating nanolayers on electron injection in the polymer light-emitting diodes (PLED) were investigated. Three kinds of polymer thin films that were capable of electron tunneling and were of different dielectric constants were placed to investigate their influence on the device performance. Higher luminescence quantum efficiency was demonstrated by the device with a nanolayer of lower dielectric constant. The results show that on employing a ∼10-nm-thick polystyrene layer the device gave approximately two orders of magnitude higher external quantum efficiency than that without an insulating nanolayer.

Original languageEnglish
Pages (from-to)1783-1785
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number10
DOIs
Publication statusPublished - 2004 Mar 8

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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