Pulsed laser deposition of small molecules for organic electroluminescence

S. R. Farrar, A. E.A. Contoret, M. O'Neill, J. E. Nicholls, A. J. Eastwood, G. J. Richards, P. Vlachos, S. M. Kelly

研究成果: Conference article査読

7 被引用数 (Scopus)

抄録

A XeCl excimer laser at 308 nm is used for the pulsed laser deposition (PLD) of a range of novel electroluminescent molecules. An optimum fluence dependent on the absorption length is found as a compromise between deposition rate and photodecomposition. There is minimal degradation of the aromatic luminescent core of the molecule when the fluence is optimised. Electroluminescent devices are prepared and show similar properties to those incorporating spin-cast films. Photodecomposition is observed for films deposited using higher fluences. The decomposition mechanism is ablative and some photoproducts are oxidised at high fluences. Thin films of reactive mesogens, containing end-groups which can undergo free radical polymerisation, are also prepared by PLD. These are not polymerised on the substrate by the deposition process. Subsequent irradiation with ultraviolet light results in an insoluble cross-linked network.

本文言語English
ページ(範囲)435-440
ページ数6
ジャーナルApplied Surface Science
186
1-4
DOI
出版ステータスPublished - 2002 1月 28
外部発表はい
イベントProceedings of the European Materials Research Society 2001 Symposium - Strasbourg, France
継続期間: 2001 6月 52001 6月 5

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 物理学および天文学(全般)
  • 表面および界面
  • 表面、皮膜および薄膜

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