Cu2
ZnSn(S1−x
Se
x)4
thin film
energy gap
dielectric constant
extinction coefficient
refractive index
...Show More Authors
Copper zinc tin sulfide selenide, Cu2
ZnSn(S1−x
Se
x)4
, absorbers are promising earth-abundant and
environmentally benign materials for low-cost photovoltaic applications. This study investigates the structural
and optical properties of Cu
2
ZnSn(S1−x
Se
x)4
nanostructured thin films prepared by pulsed laser deposition using
melt-quenched targets with selenium compositions x = 0.0–1.0. X-ray diffraction revealed that films with low selenium
content remained amorphous, whereas higher selenium incorporation promoted the formation of polycrystalline
kesterite–stannite phases with preferred orientations along (112), (200), (220), and (312). The crystallite size increased
from 12.3 to 17.9 nm as selenium reached x = 1.0, indicating enha
...
Show More