Electroluminescence from colloidal semiconductor CdSe nanoplatelets in hybrid organic–inorganic light emitting diode

• Published in: Chemical physics letters Vol. 619; pp. 185 - 188
• Main Authors: Vitukhnovsky, A.G., Lebedev, V.S., Selyukov, A.S., Vashchenko, A.A., Vasiliev, R.B., Sokolikova, M.S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 05.01.2015
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2014.12.002

[Display omitted] •Hybrid organic/inorganic light-emitting-diode based on CdSe nanoplatelets is designed.•Nanoplatelets have average thickness d=1.5nm and lateral sizes a=15nm and b=47nm.•Our device operates at the wavelength of 515nm with the turn-on voltage of 5.5V.•CdSe nanoplatelets are potentially attractive for fabricating LEDs with pure color. We report on the fabrication of a hybrid light-emitting-diode based on colloidal semiconductor CdSe nanoplatelets as emitters and organic TAZ [3-(Biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole] and TPD [N, N′-bis (3-methylphenyl)-N, N′-bis (phenyl)-benzidine] materials as the electron and hole transporting layers. Electroluminescent and current–voltage characteristics of the developed hybrid device with the turn-on voltage of 5.5V and the radiation wavelength of 515nm have been obtained. Semiconductor nanoplatelets like CdSe are attractive for the fabrication of hybrid LEDs with low operating voltages, spectrally pure color and short-wavelength electroluminescence, which is required for RGB devices.