Kinetic phenomena in non-biological nanostructures


  • Prof. Leonas Valkūnas 
  • Dr. Jevgenij Chmeliov 

Usually we can achieve deeper understanding of transport phenomena taking place in the disordered biological molecular systems by analyzing similar effects in distinct organic molecules (e.g., dye molecules, carotenoids, etc.) or artificial crystallized nanostructures exhibiting long-range order. We investigate photoinduced excitation transfer, relaxation and non-linear dynamics as well as charge generation, transport and recombination in carbon nanotubes, perovskites, etc. These nanostructures are believed to open new opportunities in development of efficient cheap photodetectors and solar cells.

Publications (2015–2019)
  1. R. Gegevičius, M. Franckevičius, J. Chmeliov, W. Tress, V. Gulbinas, Electroluminescence Dynamics in Perovskite Solar Cells Reveals Giant Overshoot Effect, J. Phys. Chem. Lett. 10, 1779–1783, 2019.
  2. J. Chmeliov, J. Narkeliunas, M. W. Graham, G. R. Fleming, L. Valkunas, Exciton–exciton annihilation and relaxation pathways in semiconducting carbon nanotubes, Nanoscale 8, 1618–1626, 2016.
  3. A. Kazakevicius, D. Peckus, O. Boiko, L. Valkunas, E. Leonenko, G. Telbiz, V. Gulbinas, Insights into the Mechanism of Enhanced Rhodamine 6G Dimer Fluorescence in Mesoscopic Pluronic-Silica Matrixes, J. Phys. Chem. C 119, 19126–19133, 2015.
  4. M. Macernis, D. Galzerano, J. Sulskus, E. Kish, Y.-H. Kim, S. Koo, L. Valkunas, B. Robert, Resonance Raman Spectra of Carotenoid Molecules: Influence of Methyl Substitutions, J. Phys. Chem. A 119, 56–66, 2015.