In situ purification of organic materials for organic light-emitting device fabrication

D. A. Pardo, N. Peyghambarian, G. E. Jabbour

Research output: Contribution to journalArticle

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Abstract

The direct route to purify, as-deposited, materials for the fabrication of organic light emitting devices (OLED) was analyzed. The in situ purification of 8-tris-hydroxyquinoline aluminum (Alq3) was carried out by pouring the as-received Alq3 in the boron nitride (BN) crucible and capping it with a placed layer of glass wool. The material was heated using ramp and soak schemes at several temperature steps prior to deposition where green-yellow crystallites were observed to grow. The emitted optical power was measured by a calibrated silicon photodiode and converted to the number of photons per second for a specific wavelength.

Original languageEnglish (US)
Pages (from-to)4922-4923
Number of pages2
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume40
Issue number8
StatePublished - Aug 1 2001

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Keywords

  • Impurity separation
  • Molecular
  • Organic light-emitting devices
  • Purification
  • Quantum efficiency

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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