Efficient Energy Transfer in Organic Multilayer Structure Utilizing 8-Hydroxyquinoline Aluminum and Aromatic Diamine.

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  • Fujii Akihiko
    Faculty of Engineering, Osaka University, Yamada–oka, Suita, Osaka 565
  • Morishima Chikayoshi
    Faculty of Engineering, Osaka University, Yamada–oka, Suita, Osaka 565
  • Yoshida Masayoshi
    Faculty of Engineering, Osaka University, Yamada–oka, Suita, Osaka 565
  • Ohmori Yutaka
    Faculty of Engineering, Osaka University, Yamada–oka, Suita, Osaka 565
  • Yoshino Katsumi
    Faculty of Engineering, Osaka University, Yamada–oka, Suita, Osaka 565

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Photoluminescence from an organic multilayer structure utilizing 8-hydroxyquinoline aluminum ( Alq3) and aromatic diamine has been discussed in terms of the wavelength of the excitation light and the layer thickness. The photoluminescence intensity from Alq3 layers is enhanced in the thinner multilayer structure compared with the thicker one as a result of efficient energy transfer at the heterointerfaces. The mechanism behind the increase of photoluminescence intensity in the organic multilayer structure is discussed.

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