Single phase tin sulfide films prepared by one-bath electrodeposition

Abstract

Single phase SnS films were potentiostatically electrodeposited on ITO-coated glass substrates in an aqueous solution containing 10 mM SnSO 4 and 50 mM Na 2 S 2 O 3 at a pH of 2.7 while varying the deposition potential, bath temperature, and stirring. Contrary to room temperature deposition, agitation using a magnetic stirrer in the electrodeposition process at 45°C significantly promoted the deposition rate and enlarged the crystal size of the SnS compounds. The structural, morphological, and optical properties of the SnS films, which had nearly stoichiometric compositions, were characterized. All of the synthesized SnS films were determined to be p-type semiconductor material by photoelectrochemical testing under illumination. The thicker samples obtained with stirring exhibited an optical band gap of *1.02 eV, which is almost identical to the theoretical value. The p-n junction heterostructures of the ITO/SnS/ZnO/In were fabricated and their rectifying behaviors were characterized under dark condition.

Pulsed Electrodeposition of Tin Sulfide Thin Films from Dimethyl Sulfoxide Solutions

“…These values are closed to the reported for electrodeposited SnS thin films, which are between 1.0 y 1.5 eV. 53,54 In Reference 52 an indirect and direct bandgap of 1.22 and 1.32 eV respectively were reported.…”

Electrochemical Synthesis of Hybrid Layered Thermoelectric Materials Based on PEDOT/SnS Doped with Ag

“…These ions react with the S, reduced from S 2 O 3 2-, to produce the SnS film. [19][20][21] Subsequently, chronoamperometry trials were performed at −0.71 V and −0.92 V for 7 h in a thermostatic bath at 30 °C using a PEDOT electrode. Results show that at −0.71 V there was no appreciable co-deposition and, therefore, −0.92 V was chosen as the fixed potential to perform chronoamperometric deposition of SnS.…”

“…The films were electrodeposited from a solution of 10 mm SnSO 4 and 50 mm Na 2 S 2 O 3 at a voltage of -0.92 V versus an Ag/AgCl reference electrode, for 7 h at a pH of 2.7. [19,34,35,20,21] A steel electrode was used as a counter electrode. The concentration of AgNO 3 was changed in the different films to get the optimum conditions for the doping of SnS films.…”