Electroluminescence of colloidal quasi-two-dimensional semiconducting CdSe nanostructures in a hybrid light-emitting diode
| Autor: | Roman B. Vasiliev, A. S. Selyukov, A. G. Vitukhnovskii, Andrey A. Vashchenko, M. S. Sokolikova, V. S. Lebedev |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Diffraction
Photoluminescence Nanostructure Materials science business.industry Physics::Optics General Physics and Astronomy Electroluminescence Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention law X-ray crystallography Optoelectronics business Quantum well Diode Light-emitting diode |
| Zdroj: | Journal of Experimental and Theoretical Physics. 120:595-606 |
| ISSN: | 1090-6509 1063-7761 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|