utilisation des nanoparticules pour l’amélioration des performances des sources organiques (oled)
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Utilisation des nanoparticules pour l’amélioration des performances des sources organiques (OLED). AYENEW Getachew. Direction de thèse: Alexis Fischer et Azzedine Boudrioua, Encadrement : Mah moud Chakaroun, Nathalie Fabre Assistance technologique: Jeanne Solard. 23/03/2011. - PowerPoint PPT PresentationTRANSCRIPT
Utilisation des nanoparticules pour l’amélioration des performances des sources organiques (OLED)
AYENEW Getachew
Direction de thèse: Alexis Fischer et Azzedine Boudrioua, Encadrement : Mah moud Chakaroun, Nathalie Fabre
Assistance technologique: Jeanne Solard
23/03/2011
Major tasks:
• Simulation (FDTD)– Practice the FTDT method (Fullwave of Rsoft)
• Experiment – OLEDs and Nanoparticlesfor light extraction ( samples from Taiwan )
• Poster
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Simulation:
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Structure to be simulated: monolayer/multilayer of nanoparticlesMethod: 3D FTDT
• Detect the signal,• Transmision and reflection spectras
( Fourier transform)
Excitation Monitor
Objective :Study the response of photonic structure for excitations in different directions
Simulation• 2D dielectric cylinder in Air:
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ncylinder = 3.4 nbackground(air)=1
Simulation type: 2D FDTD 2D PWE
• TE PWE
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TE Polarization
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No complete disappearance of detected signal, compared to TE case good agreement with Band diagram (PWE)
TM Polarization
Nanoparticles and OLEDs : light extraction
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Samples with Nanoparticle : Nanoparticle deposition made in Taiwan Size of nanoparticles: 1.3µm
Référencé Samples: prepared in clean room
Characterization : • Emission spectra ( intensity vs wavlength)• IVL characteristic
OLED structure: Glass/ITO/CUPC/TPD/AlQ 3/Al
Result to be analysed
Perspective• 3D FDTD simulation for monolayer/multilayer
of nanoparticles• Nanoparticles and OLEDs (light extraction)
Optical characterization
• Self assembly of nano particles
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Thank you
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