Abstract
We report on the results of studying quasi-two-dimensional nanostructures synthesized here in the form of semiconducting CdSe nanoplatelets with a characteristic longitudinal size of 20–70 nm and a thick-ness of a few atomic layers. Their morphology is studied using TEM and AFM and X-ray diffraction analysis; the crystal structure and sizes are determined. At room and cryogenic temperatures, the spectra and kinetics of the photoluminescence of such structures (quantum wells) are investigated. A hybrid light-emitting diode operating on the basis of CdSe nanoplatelets as a plane active element (emitter) is developed using the organic materials TAZ and TPD to form electron and hole transport layers, respectively. The spectral and current-voltage characteristics of the constructed device with a radiation wavelength λ = 515 nm are obtained. The device triggering voltage is 5.5 V (visible glow). The use of quasi-two-dimensional structures of this type is promising for hybrid light-emitting diodes with pure color and low operating voltages.
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Original Russian Text © A.S. Selyukov, A.G. Vitukhnovskii, V.S. Lebedev, A.A. Vashchenko, R.B. Vasiliev, M.S. Sokolikova, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 147, No. 4, pp. 687–701.
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Selyukov, A.S., Vitukhnovskii, A.G., Lebedev, V.S. et al. Electroluminescence of colloidal quasi-two-dimensional semiconducting CdSe nanostructures in a hybrid light-emitting diode. J. Exp. Theor. Phys. 120, 595–606 (2015). https://doi.org/10.1134/S1063776115040238
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DOI: https://doi.org/10.1134/S1063776115040238