Publications by authors named "A Karnaukhov"
Article Synopsis
- - The text examines the aging and degradation of biological organisms through the lens of statistical physics, focusing on two key timescales: metabolic processes and life cycles.
- - It proposes a kinetic equation to explain short-term processes in these systems and emphasizes the need for a constant input of negative entropy to keep biological systems stable.
- - The study includes an analysis of epithelial aging and discusses the relationship between this approach and information theory, including the concept of cooperons and their evolution over time.
The problem with waste heat in solar panels has stimulated research on materials suitable for hybrid solar cells, which combine photovoltaic and thermoelectric properties. One such potential material is CuZnSnS (CZTS). Here, we investigated thin films formed from CZTS nanocrystals obtained by "green" colloidal synthesis.
View Article and Find Full Text PDFThe method of affordable colloidal synthesis of nanocrystalline CuZnSnS (CZTS) is developed, which is suitable for obtaining bare CZTS nanocrystals (NCs), cation substituted CZTS NCs, and CZTS-based hetero-NCs. For the hetero-NCs, the synthesized in advance NCs of another material are introduced into the reaction solution so that the formation of CZTS takes place preferably on these "seed" NCs. Raman spectroscopy is used as the primary method of structural characterization of the NCs in this work because it is very sensitive to the CZTS structure and allows to probe NCs both in solutions and films.
View Article and Find Full Text PDFThe parameters of the shell and interface in semiconductor core/shell nanocrystals (NCs) are determinant for their optical properties and charge transfer but are challenging to be studied. Raman spectroscopy was shown earlier to be a suitable informative probe of the core/shell structure. Here, we report the results of a spectroscopic study of CdTe NCs synthesized by a facile route in water, using thioglycolic acid (TGA) as a stabilizer.
View Article and Find Full Text PDFCuZnSnS (CZTS) is an intensively studied potential solar cell absorber and a promising thermoelectric (TE) material. In the form of colloidal nanocrystals (NCs), it is very convenient to form thin films on various substrates. Here, we investigate composites of CZTS NCs with PEDOT:PSS, a widely used photovoltaics polymer.
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