In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 46, No. 7 ( 2022), p. 3277-3287
Kurzfassung:
In the present work, we have synthesized tin disulphide (SnS 2 ) thin films via a facile, low cost, single-step hydrothermal route using various surface directing agents. The SnS 2 thin films were characterized for their optical, structural and morphological properties. The optical study illustrated a direct allowed type of optical transition with a bandgap in the range of 1.78 to 2.03 eV. Morphological study demonstrated the formation of hierarchical nutshell surface morphologies, when using different surfactants, having higher surface-to-volume ratios for better light absorption. The structural study revealed that nanocrystalline SnS 2 thin films were formed with a pure hexagonal crystal structure with crystallite size ranging between 12.24 and 19.79 nm. Compositional analysis confirmed the formation of pure and stoichiometric SnS 2 thin films. Finally, we carefully analyzed the photoresponse properties of the as synthesized and surfactant-assisted SnS 2 thin films with the help of a standard two-electrode system on an electrochemical workstation where SnS 2 thin films acted as the working electrode and graphite acted as the counter electrode. Photocurrent ( J sc ) was enhanced with the use of the surface directing agents from 0.24 to 0.96 mA cm 2 allied with a photovoltage ( V oc ) from 416 to 610.2 mV. The highest photoelectric conversion efficiency was obtained for the Triton X-100 assisted SnS 2 photoanode and it was 0.83%. EIS performance of SnS 2 thin films synthesized with surfactants demonstrated reduced charge transfer resistance ( R ct ), which supports the PEC (photoelectrochemical) performance.
Materialart:
Online-Ressource
ISSN:
1144-0546
,
1369-9261
Sprache:
Englisch
Verlag:
Royal Society of Chemistry (RSC)
Publikationsdatum:
2022
ZDB Id:
1472933-7
