Effect of horizontal molecular orientation on triplet-exciton diffusion in amorphous organic films

T. Sawabe, I. Takasu, T. Yonehara, T. Ono, J. Yoshida, S. Enomoto, I. Amemiya, Chihaya Adachi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

Triplet harvesting is a candidate technology for highly efficient and long-life white OLEDs, where green or red phosphorescent emitters are activated by the triplet-excitons diffused from blue fluorescent emitters. We examined two oxadiazole-based electron transport materials with different horizontal molecular orientation as a triplet-exciton diffusion layer (TDL) in triplet-harvesting OLEDs. The device characteristics and the transient electroluminescent analyses of the red phosphorescent emitter showed that the triplet-exciton diffusion was more effective in the highly oriented TDL. The results are ascribed to the strong orbital overlap between the oriented molecules, which provides rapid electron exchange (Dexter energy transfer) in the TDL.

元の言語英語
ホスト出版物のタイトルOrganic Light Emitting Materials and Devices XVI
8476
DOI
出版物ステータス出版済み - 2012
イベントOrganic Light Emitting Materials and Devices XVI - San Diego, CA, 米国
継続期間: 8 12 20128 15 2012

その他

その他Organic Light Emitting Materials and Devices XVI
米国
San Diego, CA
期間8/12/128/15/12

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • これを引用

    Sawabe, T., Takasu, I., Yonehara, T., Ono, T., Yoshida, J., Enomoto, S., Amemiya, I., & Adachi, C. (2012). Effect of horizontal molecular orientation on triplet-exciton diffusion in amorphous organic films. : Organic Light Emitting Materials and Devices XVI (巻 8476). [84760L] https://doi.org/10.1117/12.929121