Low-haze light extraction from organic light-emitting diode lighting with auxiliary electrode by selective microlens arrays

Ju Hyun Hwang, Tae Hyun Park, Hyun Jun Lee, Kyung Bok Choi, Young Wook Park, Byeong Kwon Ju

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Improved out-coupling efficiency and low haze of organic light-emitting diode (OLED) lighting with an auxiliary electrode are demonstrated by selective microlens arrays (SMLAs). The microlens arrays, aligned with the auxiliary electrode, were selectively fabricated, since the fully packed microlens arrays lead to OLED lighting with high haze. The external quantum efficiency and power efficiency of the devices with the SMLAs increased by 32% when compared with the devices without these arrays. Using the SMLAs, dark grid lines in the emission region became brighter, with a low haze, and the spectra of the emitted light had no shift.

Original languageEnglish
Pages (from-to)4182-4185
Number of pages4
JournalOptics Letters
Volume38
Issue number20
DOIs
Publication statusPublished - 2013 Oct 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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