Enhanced light out-coupling efficiency of organic light-emitting diodes with self-organized microlens arrays

Wen Kuei Huang*, Wen Sheng Wang, Hui Chun Kan, Fang-Chung Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

A method for enhancing the light out-coupling efficiency of organic light-emitting diodes (OLEDs) by incorporating microlens arrays (MLAs) is demonstrated. MLAs made of prepolymer NOA65 were fabricated on a substrate prepatterned by the microcontact printing of hydrophobic self-assembled monolayers (SAMs). Owing to the hydrophobic effect, the lens material was self-organized on the hydrophilic regions. After assembling the MLA onto an OLED, the optical measurement showed that the light out-coupling efficiency of the OLED with MLAs is increased without any apparent color shift.

Original languageEnglish
Pages (from-to)L1100-L1102
Number of pages3
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume45
Issue number37-41
DOIs
StatePublished - 1 Oct 2006

Keywords

  • Light out-coupling efficiency
  • Microcontact printing
  • Microlens array
  • Organic light-emitting diode
  • Self-assembled monolayers

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