Effect of substrate temperature on the morphological, structural, and optical properties of RF sputtered Ge
1−
x
Sn
x
films on Si substrate
Mahmodi H
1, †
, Hashim M R
2
XPS spectra of the sputtered GeSn film at 140 °C: (a) Ge 3d spectra, and (b) Sn 3d spectra.