Influence of copper on hardness of amorphous As–Se–I thin films

Abstract

The paper reports on hardness of thin amorphous films of the Cux(As38·5Se54I7·5)100–x type for x = 10, 15, 20 and 25 at- evaluated by microindentation measurements and instrumented nanoindentation testing. Values of determined microhardness are in the interval of 748–1137 MPa, while nanohardness are in the interval of 930–1591 MPa and can be regarded as moderate in the category of chalcogenide glasses. Isotropic mechanical properties on thin films surface are determined. Influence of copper on mechanical properties of As–Se–I films is discussed in terms of possible structural units in glass matrix.

Effect of annealed temperature on some structural, optical and mechanical properties of selenium thin film

“…Fig. 7 shows the relationship between Se thin film micro hardness and annealing temperature, also these increased the crystallization and related with increasing the alignment ,integration and adhesion of films with the substrate, this agree with [17,18,19].…”

Modification of some Optical and Mechanical Properties of Amorphous As-S-Se Thin Films by Copper Introduction

“…Modification of optical and mechanical characteristics by alloying with Cu has also been noticed at some other chalcogenide thin films [13,23,24].…”

“…Determination of mechanical properties is of great interest for practical applications. The use of novel testing methods enables better understanding of the mechanical behavior of thin chalcogenide films, especially considering the existing knowledge of their general brittleness [12,13]. Mechanical properties of investigated films were tested by nanoindentation technique -Instrumented indentation testing (IIT).…”