Please use this identifier to cite or link to this item: http://repository.aaup.edu/jspui/handle/123456789/1716
Title: Effects of Pb nanosheets substrates on the optical and electrical properties CrSe thin films
Authors: Qasrawi, Atef$AAUP$Palestinian
Aljaloud, Amjad$Other$Other
Alf, Latifah Hamad Khalid$Other$Other
Keywords: CrSe2 thin films, Pb nanosheets, optical transitions, electrical conduction,VRH Abstract
Issue Date: 18-Oct-2023
Publisher: Physica Scripta
Citation: Phys. Scr. 98 (2023) 115950
Series/Report no.: 0031-8949;115950
Abstract: Herein the effects of lead nanosheets substrates on the optical and electrical properties of chromium selenide thin films were studied. Chromium selenide thin films were grown by vacuum thermal evaporation technique onto glass and 100 nm thick lead nanosheets substrates. The effects of Pb nanosheets on the structural, morphological, compositional, optical and electrical properties was explored. While films grown onto glass substrates showed compositional stoichiometry forming CrSe2 phase those coated onto Pb substrates preferred the growth CrSe phase. Both films were of amorphous structure and exhibited direct and indirect allowed optical transitions. Pb nanosheets enhanced the optical absorption of chromium selenide in the visible and ultraviolet ranges of light. Formation of films onto Pb nanosheets resulted in band gaps and band tails narrowing and decreased the room temperature electrical conductivity ($\sigma $) as well. Deep analyses of the $\sigma -T$ variations in the range of 25–340 K showed that the electronic transport is dominated by the thermal excitation and variable range hopping of charge carriers. It was observed that Pb nanosheets increased the average hopping energy and hopping range, decreased the density of localized states near the Fermi level and increased the degree of state disorder. The features of glass/CrSe2 and Pb/CrSe films are promising for using then in optoelectronic technology.
URI: http://repository.aaup.edu/jspui/handle/123456789/1716
ISSN: https://iopscience.iop.org/article/10.1088/1402-4896/acfe60
Appears in Collections:Faculty & Staff Scientific Research publications

Files in This Item:
File Description SizeFormat 
293 dspace.jpg359.99 kBJPEGThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Admin Tools