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Article Dans Une Revue Organic Electronics Année : 2020

Low voltage operating organic light emitting transistors with efficient charge blocking layer

Alexandre Bachelet
  • Fonction : Auteur
Marion Chabot
  • Fonction : Auteur
Abduleziz Ablat
  • Fonction : Auteur
Kazuo Takimiya
  • Fonction : Auteur

Résumé

Charge injection/blocking layers play important roles in the performances of organic electronic devices. Their incorporation into organic light emitting transistors has been limitted, due to generally high operating voltages (above 60 V) of these devices. In this work, two hole blocking molecules are integrated into tris-(8-hydroxyquinoline) aluminum (Alq3) based light emitting transistors under operating voltage as low as 5 V. The effects of hole blocking and electron injection are decoupled through the differences in the energy levels. Significantly improved optical performance is achieved with the molecule of suitable energy level for electron injection. Surprisingly, a decreased performance is observed in the case of another hole blocking molecule evidencing that charge injection overweighs charge blocking in this device architecture.
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Dates et versions

hal-03015723 , version 1 (20-11-2020)

Identifiants

Citer

Alexandre Bachelet, Marion Chabot, Abduleziz Ablat, Kazuo Takimiya, Lionel Hirsch, et al.. Low voltage operating organic light emitting transistors with efficient charge blocking layer. Organic Electronics, 2020, 88, pp.106024. ⟨10.1016/j.orgel.2020.106024⟩. ⟨hal-03015723⟩
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