Details

Autor(en) / Beteiligte

• Hu, Guang
• Kitney, Stuart P.
• Kelly, Stephen M.
• Harrison, William
• O'Neill, Mary

Titel

Novel liquid crystalline organic semiconducting oligomers incorporating N-heterocyclic carbazole moieties for fluorescent OLEDs

Ist Teil von

• Liquid crystals, 2017-09, Vol.44 (11), p.1632-1645

Ort / Verlag

Abingdon: Taylor & Francis

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Taylor & Francis

Beschreibungen/Notizen

• A novel class of nematic liquid crystalline organic semiconducting oligomers incorporating N-heterocyclic carbazole moieties has been synthesised using simple and highly efficient reaction pathways. The electroluminescent colour of these novel oligomers can be varied in a controlled manner by molecular design. The values of the ionisation potential and the electron affinity of these electroluminescent oligomers can also be matched by structural design to the Highest Occupied Molecular Orbital (HOMO) energy level of the electron-blocking layer and the Lowest Unoccupied Molecular Orbital (LUMO) energy level of electron-transporting layer in the Organic light emitting diodes to create low charge-injection barriers for electrons and holes, respectively leading to electroluminescence with an efficacy up to 4.1 cd A −1 .