2022   02   az   p.34-37 S.Q. Nuriyeva,
Ellipsometric explore of Cu2ZnSnSe4 based hetero-structure made by magnetron		  pdf 

ABSTRACT

An ellipsometric study of a thin Cu2ZnSnSe4 film with a thickness of about 100 nm, obtained on a glass substrate by magnetron sputtering of a target 10 cm in diameter, made by pressing a nanopowder obtained by crushing a Cu2ZnSnSe4 crystal, has been carried out. It is shown that the band gap of Cu2ZnSnSe4 is 1.6 eV, and the high-energy regions are (4 - 4.6) eV. The experimental results are in good agreement with the ε-spectrum calculated in the framework of the GW quasi-particle approximation, and possible causes of the revealed high-energy properties are established.

Keywords: UVN-71P vacuum unit, Cu2ZnSnSe4, magnetron, J.A. Woollam VASE ellipsometer setup, ellipsometric study, forbidden zone width, CZTS, high absorption coefficient, kesterite structure, thin films, refractive index, extinction coefficient, mathematical modeling, ε-spectrum, dielectric function, high energy properties.
PACS: 71.15.Mb,88.40.fc,88.40.jn

DOI:-

Received: 16.06.2022

AUTHORS & AFFILIATIONS

Institute of Physics of Azerbaijan National Academy of Sciences, 131 H. Javid ave, Baku, AZ-1143, Azerbaijan
E-mail: snur_phyicist@mail.ru 		REFERENCIES

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