Electroluminescence of colloidal quasi-two-dimensional semiconducting CdSe nanostructures in a hybrid light-emitting diodeстатья

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Дата последнего поиска статьи во внешних источниках: 10 февраля 2016 г.

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[1] Electroluminescence of colloidal quasi-two-dimensional semiconducting cdse nanostructures in a hybrid light-emitting diode / A. S. Selyukov, A. G. Vitukhnovskii, V. S. Lebedev et al. // Journal of Experimental and Theoretical Physics. — 2015. — Vol. 120, no. 4. — P. 595–606. 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 lambda = 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. [ DOI ]

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