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Optoelectronic features of Y-shaped push-pull molecules based on imidazole
Authors: Pokladko-Kowar M. | Nosidlak N. | Gondek E. | Kityk I. V. | Bureš Filip | Kulhánek Jiří | Karasinski P.
Year: 2016
Type of publication: článek v odborném periodiku
Name of source: Optical and Quantum Electronics
Publisher name: Springer
Place: Heidelberg
Page from-to: "82-1"-"82-10"
Titles:
Language Name Abstract Keywords
cze Optoelektronické vlastnosti push-pull molekul tvaru Y odvozených od imidazolu S pomocí push-pull derivátů imidazolu tvaru Y (chromofory) a poly(N-vinylkarbazolu) jako organického aktivního materiálů byly vytvořeny organické světloemitující diody. Byla měřena absorpční, fotoluminiscenční a elektroluminiscenční spektra chromoforů. Roztoky studovaných derivátů imidazolu v tetrahydrofuranu vykazují silnou luminiscenci. Vytvořené diody v závislosti na typu použitého derivátu imidazolu vykazují posun spektrálního maxima z 520 až na 598 nm u fotoluminiscence a posun z 535 na 590 nm u elektroluminiscence. organické světloemitující diody; imidazol; fotoluminiscence; elektroluminiscence
eng Optoelectronic features of Y-shaped push-pull molecules based on imidazole The paper involves organic light-emitting diodes fabricated with application of Y-shaped push-pull imidazole derivatives (chromophores) blended with poly(N-vinylcarbazole) as an organic active materials. The absorbance, photoluminescence and electroluminescence spectra of chromophores as well as electroluminescence-voltage, current-voltage and electroluminescence-voltage of the manufactured devices are presented. All investigated imidazole derivatives dissolved in tetrahydrofuran exhibited strong luminescence. The investigated organic light-emitting diodes exhibit red-shift in the main spectral maxima from 520 to 598 nm for photoluminescence and from 535 to 590 nm for electroluminescence depending on the type of imidazole derivative used. The electroluminescence spectra also proved to be very stable over the luminance range from 700 to 1600 cd/m(2), which is the luminance used for typical lighting applications. Organic light-emitting diode; Imidazole derivative; Photoluminescence; Electroluminescence

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