The initial interface formation between Al and tris-(8-hydroquinoline) aluminum (Alq3) with LiF interlayer

Jung Han Lee, Dae Won Moon, Yeonjin Yi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The interface between Al and tris-(8-hydroquinoline) aluminum (Alq3) was studied using in situ medium energy ion scattering spectroscopy. We compared two interfaces of Al/LiF/Alq3 and Al/Alq3 with the elemental depth profile of each interface. The thin LiF changes the interfacial structures significantly; the excess Li in the LiF layer diffuses into Alq3 while F does not. In addition, the Al diffusion into the Alq3 layer during the initial stages of Al deposition is reduced significantly compared to the interface without the LiF interlayer. The LiF interlayer makes a more abrupt metal-organic interface, which would contribute to the efficiency and stability of the organic light-emitting device.

Original languageEnglish
Pages (from-to)164-168
Number of pages5
JournalOrganic Electronics
Volume11
Issue number1
DOIs
Publication statusPublished - 2010 Jan

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Aluminum
interlayers
Metals
Spectroscopy
Scattering
Ions
aluminum
ion scattering
profiles
metals
spectroscopy
energy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "The interface between Al and tris-(8-hydroquinoline) aluminum (Alq3) was studied using in situ medium energy ion scattering spectroscopy. We compared two interfaces of Al/LiF/Alq3 and Al/Alq3 with the elemental depth profile of each interface. The thin LiF changes the interfacial structures significantly; the excess Li in the LiF layer diffuses into Alq3 while F does not. In addition, the Al diffusion into the Alq3 layer during the initial stages of Al deposition is reduced significantly compared to the interface without the LiF interlayer. The LiF interlayer makes a more abrupt metal-organic interface, which would contribute to the efficiency and stability of the organic light-emitting device.",
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The initial interface formation between Al and tris-(8-hydroquinoline) aluminum (Alq3) with LiF interlayer. / Lee, Jung Han; Moon, Dae Won; Yi, Yeonjin.

In: Organic Electronics, Vol. 11, No. 1, 01.2010, p. 164-168.

Research output: Contribution to journalArticle

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AB - The interface between Al and tris-(8-hydroquinoline) aluminum (Alq3) was studied using in situ medium energy ion scattering spectroscopy. We compared two interfaces of Al/LiF/Alq3 and Al/Alq3 with the elemental depth profile of each interface. The thin LiF changes the interfacial structures significantly; the excess Li in the LiF layer diffuses into Alq3 while F does not. In addition, the Al diffusion into the Alq3 layer during the initial stages of Al deposition is reduced significantly compared to the interface without the LiF interlayer. The LiF interlayer makes a more abrupt metal-organic interface, which would contribute to the efficiency and stability of the organic light-emitting device.

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