INVESTIGATION OF Cu2ZnSnSe4 THIN FILMS BY ATOMIC FORCE MICROSCOPY
Abstract
In comparison to the traditional use of glass substrates, the thin films onto metal substrates offer improved device cooling, economical large-scale roll-to-roll processing, and applicability in lightweight, as well as flexible products. However, unlike glass, metal foils tend to exhibit rough surfaces. This article studies the substrate-type (Mo/glass and Мо-foil) effect on the topographic characteristics of the Cu2ZnSnSe4 films by atomic force microscopy (AFM). Cu2ZnSnSe4 thin films were prepared by the electrodeposition of stack copper/tin/copper/zinc (Cu/Sn/Cu/Zn) precursors, followed by selenization. AFM was
used to study the topographic characteristics of thin films, including grain size, surface roughness, and maximum height of the profile. It is shown that the films obtained on Mo/glass and Mo-foil substrates have similar roughness and in the both cases the grain structure is formed. The Cu2ZnSnSe4 thin films show relatively high surface roughness and maximum roughness profile height compared to Cu-Zn-Sn precursors. The increase in the surface roughness of the films was caused by the growth of grains during annealing and selenization processes.
used to study the topographic characteristics of thin films, including grain size, surface roughness, and maximum height of the profile. It is shown that the films obtained on Mo/glass and Mo-foil substrates have similar roughness and in the both cases the grain structure is formed. The Cu2ZnSnSe4 thin films show relatively high surface roughness and maximum roughness profile height compared to Cu-Zn-Sn precursors. The increase in the surface roughness of the films was caused by the growth of grains during annealing and selenization processes.
About the Authors
A. V. Stanchik
Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
Postgraduate
Belarus
Postgraduate
S. M. Barajshuk
Belarusian State Agrarian Technical University
Belarus
Ph. D. (Physics and Mathematics), Head of the Department of Practical Training of Students
Belarus
Ph. D. (Physics and Mathematics), Head of the Department of Practical Training of Students
S. A. Bashkirov
Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
Ph. D. (Physics and Mathematics), Researcher
Belarus
Ph. D. (Physics and Mathematics), Researcher
V. F. Gremenok
Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Physics and Mathematics), Head of the Laboratory of Solid State Physics
Belarus
D. Sc. (Physics and Mathematics), Head of the Laboratory of Solid State Physics
M. S. Tivanov
Belarusian State University
Belarus
Ph. D. (Physics and Mathematics), Head of the Energy Physics Department
Belarus
Ph. D. (Physics and Mathematics), Head of the Energy Physics Department
M. V. Dergacheva
Sokolsky Institute of Fuel, Catalysis and Electrochemistry
Kazakhstan
D . S c. ( Chemistry)
Kazakhstan
D . S c. ( Chemistry)
K. A. Urazov
Sokolsky Institute of Fuel, Catalysis and Electrochemistry, Kazakh-British Technical University
Kazakhstan
Postgraduate
Kazakhstan
Postgraduate
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