Physico-Chemical nanomaterials science

Indium deposited nanosystems formation on 2D layered chalcogenide crystals’ surfaces
P.V. Galiy1, T.M. Nenchuk1, A. Ciszewski2, P. Mazur2, V.I. Dzyuba1, T.R. Makar1, O.V. Tsvetkova1
1 Electronics and Computer Technology Department, Ivan Franko Lviv National University, 50 Dragomanov Street, Lviv, 79005, Ukraine.
E-mail: galiy@electronics.lnu.edu.ua
2 Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland.

2D layered chalcogenide semiconductors, such as, InSe, In4Se3, InTe, Sb2Te3 are among newly emerging materials suitable for functional nanoscale devices applications [1]. It looks like that surface of 2D layered crystals are one among most perspective templates for self-assembling of metal nanostructures due to the solid state dewetting [2,3]. Because of intrinsic nature of van der Waals interlayer bonding, layered chalcogenide crystals’ surfaces possess relatively good ambient stability, might be just easily obtained by cleavage even in UHV, and, thus, applied as template for fabrication of metal-semiconductor hetero nanosystems. 
The studies of In deposition with further nanosystems formation were conducted using STM/STS data from Omicron NanoTechnology STM/AFM System. The studies included statistical analysis of STM data from large areas by standard roughness analysis tools from the WSxМ software taking into account the distribution of pixels' height of the image depending on the degree of In deposition, as well as detailed analysis of high-resolution STM images. In consequence of our studies it was found that obtained indium nanostructures have got 0D or 1D dimensionality consistent with the nano relief of the initial crystals’ patterns. 

1. Vorobeva N.S., Lipatov A., Torres A. et al. Anisotropic Properties of Quasi-1D In4Se3: Mechanical Exfoliation, Electronic Transport, and Polarization-Dependent Photoresponse // Adv Func Mater.-2021.-P. 2106459(11).
2. Galiy P.V., Nenchuk T.M., Ciszewski A. et al. InTe surface application as template for indium deposited nanosystem formation // Mol Crys Liq Crys.-2021.- 721.-P. 1-9.
3. Galiy P.V., Nenchuk T.M., Mazur P. et al. Self-assembled indium nanostructures formation on InSe (0001) surface // Appl Nanosci. -2020.-10.-P. 4629-4635.