“…MnS thin film production has been carried out by using several deposition techniques, such as molecular beam epitaxy, [33][34][35][36][37] chemical vapor deposition, [38,39] atomic layer deposition (for ZnS:Mn films), [40] thermal vacuum evaporation, [41][42][43] microwave hydrothermal, [44] radio-frequency sputtering, [45,46] and chemical bath deposition (CBD). [24,26,[47][48][49][50][51] With the exception of CBD, all of these techniques require a vacuum, or sophisticated instruments, which is not conducive to the cost-effective deposition of uniform films over large areas of substrate. Films that have been prepared using CBD are often found to be of an amorphous nature and subsequent annealing is needed in order to obtain a crystalline film.…”