Professor
Independent Researcher
Singapore
Valeri Ligatchev’s areas of scientific interest and expertise comprise of experimental and computational studies on electronic, optical, vibrational, relaxation time and defect states spectra as well as thermal properties of various (predominantly spatially non-homogeneous) semiconductors insulators and even superconductors, including nominally undoped and heavily doped polycrystalline and nano-crystalline diamond(s), flakes of two-dimensional semiconductors, silicon-germanium ‘quantum dots’, ‘molecular wires’, silicon micro- and nano-wires, hydrogenated amorphous silicon-based films, porous ‘low-k’ organic and inorganic insulating layers, as well as ceramic insulators with ‘gigantic dielectric response’ (GDR).
His so-called ‘Generalized Skettrup Model’ becomes expedient in several important areas: from realistic simulations on optical and electronic properties of polycrystalline and spatially non-homogeneous amorphous semiconductors and insulators as well as of their low-dimensional counterparts to convincing estimations on the harmonic and anharmonic fractions of lattice thermal capacity of such materials; this model could be useful as well at quantitative evaluations on lifetimes of Fröhlich Polarons. He also substantiated condensed phases of Fröhlich polarons as the essence of the GDR phenomenon. Furthermore, he had implemented broadly advanced mathematical methods at deconvolution and interpretation of data of several well-established techniques of defect states spectroscopy.
Valeri Ligatchev is a member of The Electrochemical Society since 2007. His name had been included in 2011 Edition of Marquis Who's Who in the World.