Chemical Bath Deposition of SnS Thin Films from the Solutions with Different Concentrations of Tin and Sulphur

Abstract

The aim of the current research was to study regularities of chemical bath deposition (CBD) of tin sulphide thin films as function of tin and sulphur concentrations in the solutions. SnS thin films were deposited onto Mo-, ITO-and TO-coated glass and onto borosilicate glass substrates at room temperature for 24 hours. The concentrations of sulphur and tin (ratio 1:1) in the deposition solution were varied from 0.01 M to 0.09 M. Films were characterized by SEM and Raman spectroscopy. The structuraly best tin mono-sulphide films with good adhesion to the substrate were deposited at concentration of consituents in solution 0.03M. The films deposited at concentration of 0.01M had non-uniform and incomplete coverage of the surface on all used substrates whereas at tin and sulphur concentrations of 0.05M and higher films were peeling off of the substrate.

Fundamental Aspects and Comprehensive Review on Physical Properties of Chemically Grown Tin-Based Binary Sulfides

“…Although the substrate nature has more impact on the process of CBD and the deposited thin film characteristics, there are only a few studies on this area in the case of o-SnS and SnS 2 films and no reports for c-SnS and Sn 2 S 3 films ( Table 4 and Table 5 ). The reports related to the effects of molybdenum (Mo), ITO, and TO and borosilicate glass substrates [ 204 ] on the properties of o-SnS films and the glass, TO, and titanium (Ti) substrates [ 130 ] on SnS 2 films are available in the literature. At 0.01 M of Sn and S sources concentrations, both Mo and TO substrates generate o-SnS films with a better surface coverage, whereas the borosilicate glass and ITO substrates produce a discontinuous film with separate agglomerated o-SnS particles.…”

“…When the concentration of sources is 0.03 M, all substrates except the borosilicate glass form a complete and uniform coverage of o-SnS films. At a high concentration of 0.09 M, all substrates produce a complete coverage of o-SnS films but with a lower adhesive nature [ 204 ]. In the case of SnS 2 , the amorphous and n-type nature films formed on the glass and Ti substrates, respectively.…”

A short review of CdTe and CdSe films: growth and characterization

“…Chemical bath deposition method is a slow process. Nowadays, there are many researchers 43,44 select chemical bath deposition method 45,46 to produce thin films [47][48][49] onto various substrates such as indium tin oxide [50][51][52][53] , fluorine-doped tin oxide [54][55][56] , a microscope glass slide [57][58][59][60] and soda lime glass [61][62][63] . It has many advantages over the other ones such as low cost, large area production in lower temperature, and simple process.…”