Enhanced light extraction from organic light-emitting diodes using a quasi-periodic nanostructure

Ju Sung Lee, Yong Sub Shim, Chan Hyuk Park, Ha Hwang, Jae Geun Kim, Chul Woong Joo, Woo Jin Sung, Jonghee Lee, Young Wook Park, Byeong Kwon Ju

Research output: Contribution to journalConference articlepeer-review


Here, we fabricate organic light-emitting diodes (OLEDs) with quasi-periodic nanostructure (QPS) processed both by laser interference lithography (LIL) and reactive ion etching (RIE). The LIL process is used for forming periodic pattern, and on the periodic pattern, the RIE process is supplemented for adding random property. The resulting quasi-periodic nanostructure is composed of the silicon dioxide (SiO2) having low refractive index, and we were able to obtain enhanced light extraction characteristics of OLEDs in all viewing angle without any spectrum distortion problem, by utilizing each optical advantage of periodic and random structure.

Original languageEnglish
Pages (from-to)1947-1948
Number of pages2
JournalDigest of Technical Papers - SID International Symposium
Publication statusPublished - 2017 Jan 1
EventSID Symposium, Seminar, and Exhibition 2017, Display Week 2017 - Los Angeles, United States
Duration: 2017 May 212017 May 26


  • Author organic light-emitting diodes (OLEDs)
  • Light extraction
  • Quasi-periodic nanostructure

ASJC Scopus subject areas

  • Engineering(all)


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