Fyzikální ústav Akademie věd ČR

Research subjects at department 27

Luminescence and scintillation materials (M. Nikl)

  • Optical, luminescence and EPR spectroscopy of wide band-gap solids in the form of single crystals, thin films, glasses, pwders, optical ceramics and composite materials.
  • Scintillation characteristics under high energy excitation.
  • Spectroscopy of point defects, trap states in the forbidden gap, energy transfer processes in the luminescence and scintillation mechanisms.
  • Modification of the optical properties of solid states due to quantum size effect.
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Photovoltaics (and nanotechnology) group (M. Vaněček)

Optical and photoelectrical spectroscopy of solar cells materials (amorphous silicon, nanocrystalline silicon, microcrystalline silicon, recrystalized silicon, silicon carbides, ZnO, SnO2).

Optical model CELL – Monte Carlo modeling of quantum efficiency spectra of thin film silicon solar cells (single or multiple junctions). Study of light trapping in thin film silicon solar cells.

Transparent conductive oxides (TCO) for solar cells.  The full text >>

CVD diamond (A. Kromka)

Theory of phase transition (P. Demo)

  • Modeling of formation of new stable phase from the supersaturated vapor, solution or supercooled melt by homogeneous or heterogeneous nucleation proces.
  • Kinetic of formation of new phase nuclei in closed systems.
  • Nucleation on active centers.
  • Controlled nucleation on nanofibers.

Řešitelský tým: Pavel Demo, Zdeněk Kožíšek, Alexej Sveshnikov, Petra Tichá, Marina Davydova, Jan Kulveit (diplomant)

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Electron spectroscopy (J. Zemek)

  • Measurement of the hydrogen content at solid surfaces by elastic peak electron spectroscopy. Determination of the attenuation length at the solid surfaces.
  • Assesment of the atomic structure of solid surfaces by photoelectron diffraction and low energy electron diffraction.
  • Characterization of solid surfaces by UV and X-ray induced photoelectron spectroscopy and electron energy loss spectroscopy.
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Preparation and characterisation of optical materials (K. Nitsch)

  • Searching for and preparation of materials - crystals, epitaxial layers, nanostructures and glasses - of high quality and purity with interesting optical properties and with their possible application in laser hosts in near IR range, as neutrons, gama and X-rays radiations detectors in industrial and medical application.
  • Preparation of model crystalline systems for luminescence mechanism study.
  • Thermal analysis study of properties of solids and glasses prepared by rapid cooling.
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