L. Samardokas “Formation and study of thalium selenide layers on the surface of polyamide 6 and doping with copper, gallium and silver” doctoral dissertation defence

Thesis Defense

Author, Institution: Linas Samardokas, Kaunas University of Technology

Science area, field of science: Natural Sciences, Chemistry, N003

Scientific Supervisor: Assoc. Prof. Dr. Remigijus Ivanauskas (Kaunas University of Technology, Natural Sciences, Chemistry, N003)

Dissertation Defence Board of Chemistry Science Field:
Prof. Dr. Vytautas Martynaitis (Kaunas University of Technology, Natural Sciences, Chemistry, N003) – chairman
Prof. Dr. Saulius Grigalevičius (Kaunas University of Technology, Natural Sciences, Chemistry, N003)
Prof. Dr. Habil. Aivaras Kareiva (Vilnius University, Natural Sciences, Chemistry, N003)
Assoc. Prof. Dr. Jolanta Rousseau (Artois University, France, Technological Sciences, Chemical Engineering, T005)
Prof. Dr. Eugenijus Valatka (Kaunas University of Technology, Natural Sciences, Chemistry, N003)

The dissertation defence was held remotely.

The doctoral dissertation is available at the library of Kaunas University of Technology (K. Donelaičio g. 20, Kaunas).


Inorganic–organic composites are a quickly developing group of materials with a tremendous range of highly tunable structural, physical, and chemical properties. Particularly interesting are composite materials with group III metal: Ga, In, and Tl, binary or ternary compounds, which, in combination with group VI nonmetals: S, Se, and Te, possess unique physical properties of tremendous importance to the modern science and technology. Particularly established, but still rapidly progressing area of III–VI material development and use is solar energy harvesting. Unprecedented interest in these so-called 2nd generation photovoltaic (PV) materials is due to their high absorbance with very thin films of materials that are needed to harvest solar energy. Adsorption–diffusion can be viewed as an emerging alternative method in obtaining these binary III–VI compounds that are incorporated into polymers. This method does not require high temperatures, vacuum, or inert atmosphere. As in chemical bath deposition method, the deposition of thin film occurs due to the substrate in contact with dilute chemical bath, containing corresponding ions, resulting in an excellent adhesion between the thin film and the polymer due to the partial film incorporation. In this work, model III–VI binary compound, thallium selenide, with varying ratios of thallium-to-selenium was deposited onto the model polymer–polyamide (PA) substrates by using adsorption–diffusion method. Mixed Tl-M-Se (M = Ga, Cu, Ag) layers were formed by treating the obtained layers in Ga(III), Cu(II/I), or Ag(I) salt solutions.

August 31 d. 15:00

Kaunas University of Technology (online)

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