Stability improvement of organic light-emitting diode with aluminum cathode deposited by ion beam assisted deposition method

Soon Moon Jeong, Won Hoi Koo, Sang Hun Choi, Sung Jin Jo, Hong Koo Baik, Se Jong Lee, Kie Moon Song

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Highly stable organic electroluminescent devices based on spin-coated poly-p-phenylene-vynylene (PPV) thin films have been achieved. We investigated the electrical properties of ion beam assisted aluminum cathode contacting PPV compared that of thermal evaporation. Energetic particles of Al assisted by Ar+ ion increase the contact area between Al and PPV minimizing contact resistance. In addition, dense Al cathode inhibits the permeation of H2O and O2 through pinhole defects, which results in retarding dark spot growth. It is believed that the lifetime of organic light-emitting diode (OLED) device was enhanced effectively by ion beam assisted deposition process resulting from dense Al structure.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalThin Solid Films
Volume475
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2005 Mar 22

Fingerprint

Ion beam assisted deposition
Organic light emitting diodes (OLED)
Aluminum
Cathodes
light emitting diodes
cathodes
ion beams
aluminum
Luminescent devices
Thermal evaporation
pinholes
Contact resistance
energetic particles
contact resistance
Permeation
Ion beams
Electric properties
electrical properties
retarding
evaporation

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Jeong, Soon Moon ; Koo, Won Hoi ; Choi, Sang Hun ; Jo, Sung Jin ; Baik, Hong Koo ; Lee, Se Jong ; Song, Kie Moon. / Stability improvement of organic light-emitting diode with aluminum cathode deposited by ion beam assisted deposition method. In: Thin Solid Films. 2005 ; Vol. 475, No. 1-2 SPEC. ISS. pp. 227-230.
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Stability improvement of organic light-emitting diode with aluminum cathode deposited by ion beam assisted deposition method. / Jeong, Soon Moon; Koo, Won Hoi; Choi, Sang Hun; Jo, Sung Jin; Baik, Hong Koo; Lee, Se Jong; Song, Kie Moon.

In: Thin Solid Films, Vol. 475, No. 1-2 SPEC. ISS., 22.03.2005, p. 227-230.

Research output: Contribution to journalArticle

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T1 - Stability improvement of organic light-emitting diode with aluminum cathode deposited by ion beam assisted deposition method

AU - Jeong, Soon Moon

AU - Koo, Won Hoi

AU - Choi, Sang Hun

AU - Jo, Sung Jin

AU - Baik, Hong Koo

AU - Lee, Se Jong

AU - Song, Kie Moon

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AB - Highly stable organic electroluminescent devices based on spin-coated poly-p-phenylene-vynylene (PPV) thin films have been achieved. We investigated the electrical properties of ion beam assisted aluminum cathode contacting PPV compared that of thermal evaporation. Energetic particles of Al assisted by Ar+ ion increase the contact area between Al and PPV minimizing contact resistance. In addition, dense Al cathode inhibits the permeation of H2O and O2 through pinhole defects, which results in retarding dark spot growth. It is believed that the lifetime of organic light-emitting diode (OLED) device was enhanced effectively by ion beam assisted deposition process resulting from dense Al structure.

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