Light-Emitting Materials, Devices, and Technologies

Electroluminescence and fluorescence emission of poly(n-vinylcarbazole) and poly(n-vinylcarbazole)-Ir(ppy)3-based organic light-emitting devices prepared with different solvents

[+] Author Affiliations
Annalisa Bruno

Italian National Agency for New Technologies, Energy and Sustainable Economic (ENEA), Portici Research Center, p.le E. Fermi 1, 80055 Portici, Italy

Imperial College London, Chemistry Department, South Kensington Campus, London SW7 2AZ, United Kingdom

Anna De Girolamo Del Mauro, Giuseppe Nenna, Maria Grazia Maglione, Carla Minarini

Italian National Agency for New Technologies, Energy and Sustainable Economic (ENEA), Portici Research Center, p.le E. Fermi 1, 80055 Portici, Italy

Saif A. Haque

Imperial College London, Chemistry Department, South Kensington Campus, London SW7 2AZ, United Kingdom

J. Photon. Energy. 3(1), 033599 (Jan 15, 2013). doi:10.1117/1.JPE.3.033599
History: Received July 25, 2012; Revised November 28, 2012; Accepted November 29, 2012
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Abstract.  We present a study of spectroscopic proprieties of poly(n-vinylcarbazole) (PVK) and PVK doped with iridium complexes tris[2-phenylpyridinato-C2,N]iridium(III) (Ir(ppy)3) films prepared by spin-coating from toluene and chlorobenzene solutions. A different molecular organization of the polymer on the substrate during the spin-coating process can be produced using solvents with different boiling temperatures. The modified molecular rearrangement affects the emission properties of the PVK material and the consequent energy transfer to the doping molecules. Both static and dynamic fluorescence emissions properties have been studied, for pure PVK and PVK doped with different weight percentage of Ir(ppy)3. Different organic light-emitting devices, using a simple architecture, have been prepared with both solvents to test the change in electroluminescence spectral shape and in electrical characteristic, and the final efficiencies of the devices have been evaluated.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Annalisa Bruno ; Anna De Girolamo Del Mauro ; Giuseppe Nenna ; Maria Grazia Maglione ; Saif A. Haque, et al.
"Electroluminescence and fluorescence emission of poly(n-vinylcarbazole) and poly(n-vinylcarbazole)-Ir(ppy)3-based organic light-emitting devices prepared with different solvents", J. Photon. Energy. 3(1), 033599 (Jan 15, 2013). ; http://dx.doi.org/10.1117/1.JPE.3.033599


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