The laboratory conducts research into optical properties of semiconductor nanostructures, quantum-dimensional effect in semiconductor nanoclusters and nanocrystals. Modern materials such as graphene and carbon nanotubes are studied. In addition, biological objects are being researched using the methods of high energy vibrational spectroscopy (Raman scattering, IR-spectroscopy).
The laboratory has received the following results:
- using simulation modelling and comparative analysis with the data of electron microscopy, the dependence of shifts in peak values of Raman light scattering (RLS) on optical phonons from the size of semiconductor nanocrystals with a dimond-like grid built into a amorphous matrix;
- a model to determine element composition and strain in nanostructures Ge/Si using the analysis of intensity and spike location in RLS spectra;
- a dependence between the frequency of localised optical phonons on the lateral size of mono-and bilayered semiconductor nanobranches with a dimond- or sphalerite-shaped lattice;
- a model for calculating the frequencies of coupled photon-plasmon modes in heterostructured polar semiconductors screening with Coulomb interaction plasmons has been created. The comparison between the experimental and calculated parameters make it possible to make noncontact evaluation of charge carriers concentration in heterostructures;
- based on the results of RLS analysis, mono- and multilayered graphene films on carbon enriched and annealed copper substrates have been discovered. The dependence of film structure on the parameters of substrate processing.
The laboratory is a member of the University’s Analytical and Technological Innovation Center for High Technologies and New Materials.
Head of Laboratory - Vladimir Alexeevich Volodin (Ph.D., Physics and Mathematics),
volodin@isp.nsc.ru
Semiconductor Physics Section
Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences 