Abstract
We have measured the energy loss spectra of 4,4′-bis[(E)-1-(1,3-benzoxazol-2-yl)-2-ethenyl]-2-n-hexyloxy biphenyl for interaction with electrons with energies 17.5 eV and 50 eV. We used time-dependent density functional theory to calculate spectra of the singlet transitions, which match the experimental data well. We have shown that the cross section for the long-wavelength transitions is greater than the cross section for the short-wave transitions, which is attractive for efficient excitation by low-energy electrons. Electroluminescence was achieved for the studied compound. The threshold voltage was 3.5 V. Introducing an additional layer of copper phthalocyanine increases the brightness of the luminescence several-fold.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 5, pp. 684–687, September–October, 2007.
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Kukhto, A.V., Kolesnik, É.É., Kukhto, I.N. et al. Electroluminescent properties of dibenzoxazolyl biphenyl molecules. J Appl Spectrosc 74, 760–764 (2007). https://doi.org/10.1007/s10812-007-0121-9
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DOI: https://doi.org/10.1007/s10812-007-0121-9