Author/Authors :
A.Ghazi, Rusul Department of Medical Physics - Al–Mustaqbal University College - Babylon, Iraq , Ghazai, Alaa Jabbar Department of Physics - College of Science - Al-Nahrain University, Iraq , Shaban, Zina Mahmood Department of Physics - College of Education - Mustansiriyah University, Iraq , Abass, Khalid Haneen Department of Physics - College of Education for Pure Sciences - University of Babylon, Iraq , Habubi, Nadir Fadhil Department of Physics - College of Education - Mustansiriyah University, Iraq , Chiad, Sami Salman Department of Physics - College of Education - Mustansiriyah University, Iraq
Abstract :
Nanostructured tin sulfide (SnS) films were grown by chemical bath
deposition (CBD) employing trisodium citrate (TSC) as complex agent.
Investigation of the effect of different molar concentrations of TSC (0.10,
0.15 and 0.20 M) on the phases of SnS was done. Structure, morphology and
optical properties were studied through the use of x-ray diffraction XRD,
which proves that the as-prepared SnS films orthorhombic polycrystalline
structure. XRD displays that peak of maximum intensity corresponds to
the preferred orientation (002) of SnS films at TSC concentration 0.20
M. The decrement of average crystalline size values was due increment
of TSC content. A study of SnS morphology indicates the presence of
homogeneous grains, while when concentration of TSC of 0.20 M, the
grains were not homogeneous and have different sizes. The AFM image
showed that the grain size was observed in the area of 72.57 nm to 60.35
nm with concentration of TSC from 0.10 M to 0.20 M respectively. The
results showed excellent optical transparency. The optical transmittance
reduced from 95 to 80% with increasing TSC content. The ban gap was also
reduced of 1.45 to 1.25 eV with increasing TSC content. The results refer
that TCS act as a crucial role in the grown of SnS films.
Keywords :
AFM , Band gap , CBD , Optical properties , SnS thin film , XRD
