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Resonance energy transfer in self-organized organic/inorganic dendrite structures

Melnikau, D.; Savateeva, D.; Lesnyak, V.; Gaponik, Nikolai; Núnez Fernández, Yuriel; Vasilevskiy, Mikhail; Costa, M. F.; Mochalov, K. E.; Oleinikov, V.

Hybrid materials formed by semiconductor quantum dots and J-aggregates of cyanine dyes provide a unique combination of enhanced absorption in inorganic constituents with large oscillator strength and extremely narrow exciton bands of the organic component. The optical properties of dendrite structures with fractal dimension 1.7–1.8, formed from J-aggregates integrated with CdTe quantum dots (QDs), have been inv...


Confined optical vibrations in CdTe quantum dots and clusters

Rolo, Anabela G.; Vasilevskiy, Mikhail; Gaponik, Nikolai; Talapin, Dmitrii; Rogach, Andrey; Gomes, M. J. M.

Absorption of far-infrared (FIR) radiation and Raman scattering in CdTe nano-crystals (spherical quantum dots (QDs) of several nanometers in size) and Cd54Te32(SCH2CH2OH)8- 32 clusters prepared by colloidal synthesis were studied. Raman spectra of both QDs and clusters are dominated by a peak situated slightly below the bulk CdTe LO phonon frequency. Experimental FIR transmittance spectra of films containing Cd...


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