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Complexes de platine(II) pour des diodes organiques électroluminescentes (OLEDs) rouges et bistables

Abstract : This thesis describes the integration of platinum(II) complexes within organic light emitting diodes (OLEDs). These complexes ([Pt(II) (tetra-tert-butylSalophen)] and [Pt(II) Salophen]) were characterized by the usual methods ( 1H NMR, UV-Vis spectroscopy, electrochemistry and X-ray diffraction for [Pt(II) (tetra-tert-butylSalophen)]). DFT calculations support the experimental data which guided the selection of Tris(8-hydroxyquinolinato) aluminum (Alq3)as host. 5% doping in monolayer OLEDs gave bistable devices which may be used as memory. Modulation of this phenomenon was allowed by adding a controlled layer of N,N'-Di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine (NPD). Bilayer OLEDs (NPD/Alq3:Pt) were shown to emit in the deep-red range between 640-750nm with efficiencies higher than 20%. Upon doping with complexes, an enhancement in the lifetime of OLEDs was highlighted.
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https://tel.archives-ouvertes.fr/tel-01963215
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Submitted on : Friday, December 21, 2018 - 11:17:08 AM
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Benoît Blondel. Complexes de platine(II) pour des diodes organiques électroluminescentes (OLEDs) rouges et bistables. Micro et nanotechnologies/Microélectronique. Université Paul Sabatier - Toulouse III, 2017. Français. ⟨NNT : 2017TOU30173⟩. ⟨tel-01963215⟩

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