Improving organic light-emitting diode performance with patterned structures

Michael Fina, Deang Liu, Li Ren, Samuel S. Mao

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The influence nano- and micro- structures on light extraction and carrier injection characteristics in organic light-emitting diodes (OLEDs) is examined. The results demonstrate device enhancement from two distinctive patterning scales: embedded microstructure arrays for improved light extraction and imprinted nanostructures for carrier injection enhancement. Further, based on these results, a two-level imprinting stamp is designed which simultaneously produces a micron-sized pattern for facilitating light extraction and a nanometer-sized pattern to improve carrier injection. Additionally, this scalable patterning technology circumvents imprinting misalignment while preserving its compatibility with rollto- roll technology.

Original languageBritish English
Pages (from-to)323-327
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Issue number2
StatePublished - Nov 2011


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