Comparative studies on EL performances of the OLEDS prepared by PVD, NCBD and ICBD methods

E. S. Kim, K. Kim, J. I. Jin, Jong-Ho Choi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Organic light emitting diodes (OLEDs) with the structure of indium-tin-oxide glass/spin-coated poly[2-(N-carbazolyl)-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene]/8-hydroxyquinoline aluminum/Li:Al [ITO-glass/CzEH-PPV/Alq3/Li:Al] have been fabricated by applying three deposition methods: physical vapor deposition (PVD), neutral and ionized cluster beam depositions (NCBD and ICBD). Atomic force microscopy (AFM) measurements show that the weakly bound and highly directional cluster beam is effective in producing uniform flat film surfaces. Photo- and electro-luminescence (PL, EL) spectra demonstrate that the NCBD and PVD methods produce more efficient EL devices and the introduction of neutral buffer layer to the ICBD devices enhances the performances. DCM-doped devices show color-tuning capability and higher external quantum efficiency (EQE) compared to undoped devices.

Original languageEnglish
Pages (from-to)1677-1678
Number of pages2
JournalSynthetic Metals
Volume121
Issue number1-3
DOIs
Publication statusPublished - 2001 Mar 15

Fingerprint

ITO glass
Physical vapor deposition
vapor deposition
Oxyquinoline
Electroluminescence
Organic light emitting diodes (OLED)
Buffer layers
Aluminum
Quantum efficiency
Atomic force microscopy
Photoluminescence
Tuning
Color
ITO (semiconductors)
electroluminescence
indium oxides
spin glass
tin oxides
quantum efficiency
light emitting diodes

Keywords

  • Alq
  • Atomic force microscopy
  • DCM
  • Optical spectroscopy
  • Poly(phenylene vinylene) derivative
  • Vapor and cluster depositions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Comparative studies on EL performances of the OLEDS prepared by PVD, NCBD and ICBD methods. / Kim, E. S.; Kim, K.; Jin, J. I.; Choi, Jong-Ho.

In: Synthetic Metals, Vol. 121, No. 1-3, 15.03.2001, p. 1677-1678.

Research output: Contribution to journalArticle

Kim, E. S. ; Kim, K. ; Jin, J. I. ; Choi, Jong-Ho. / Comparative studies on EL performances of the OLEDS prepared by PVD, NCBD and ICBD methods. In: Synthetic Metals. 2001 ; Vol. 121, No. 1-3. pp. 1677-1678.
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