Organic electroluminescence cells based on thin films deposited by ultraviolet laser ablation

N. Matsumoto, H. Shima, T. Fujii, F. Kannari

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Organic thin films of copper-phthalocyanine (CuPc) and aluminum tris-8-hydroxyquinline (Alq3) were fabricated via KrF laser ablation. In spite of poor crystallinity exhibited in the reconstructed organic films, the CuPc film still works as a hole-transport layer in electroluminescence cells based on the CuPc and Alq3 layers. Electroluminescence at ∼500 nm was obtained with a low initiation voltage of ∼12 V. There is no significant difference in electroluminescence performance for devices fabricated via laser ablation and thermal evaporation. Emission at ∼600 nm caused by energy transfer from Alq3 to 4-(Dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) is also observed from a DCM-doped Alq3 emission layer.

Original languageEnglish
Pages (from-to)2469-2471
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number17
DOIs
Publication statusPublished - 1997 Oct 27

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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