Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2

Synthesis of 2D PtSe2 Nanolayers on Glass Substrates and Their Integration in Near-Infrared Light Shutters

“…As can also be appreciated from Figure b, in the same sequence, the peak intensity ratio of the lines A 1g and E g increases slightly above unity. These results are in qualitative agreement with those established in a range of previous studies. ,,, Still, our values of the A 1g /E g peak intensity ratio point to slightly lower thicknesses for the three examined samples if the results of, e.g., ref are taken as a base. However, as was shown recently, this ratio significantly depends on the c -axis orientation and there are indications that it may also depend on the type of substrates .…”

“…These results are in qualitative agreement with those established in a range of previous studies. ,,, Still, our values of the A 1g /E g peak intensity ratio point to slightly lower thicknesses for the three examined samples if the results of, e.g., ref are taken as a base. However, as was shown recently, this ratio significantly depends on the c -axis orientation and there are indications that it may also depend on the type of substrates . On the other hand, the TEM characterization (Figure f,i) indicates that in our samples both vertical and lateral stacking of the monolayers are present; thus, slight deviations from the results of other literature sources can be expected.…”

Crystalline Orientation‐Tunable Growth of Hexagonal and Tetragonal 2H─PtSe2 Single‐Crystal Flakes

“…By tuning the thickness of pre‐deposited Pt film, it was realized the c ‐axis and a ‐axis PtSe 2 film growth through direct selenization. [ 37–39 ] However, the obtained polycrystalline structure suppressed the uniform property when used in electronics. Therefore, this study opens the way to the growth of c ‐axis and a ‐axis PtSe 2 films with single‐crystal structures, which will facilitate its future investigation.…”