Mohammad, T and Alam, F and Sadhanala, A and Upadhyaya, HM and Dutta, V (2022) Tin Sulfide (SnS) Films Deposited by an Electric Field-Assisted Continuous Spray Pyrolysis Technique with Application as Counter Electrodes in Dye-Sensitized Solar Cells. In: ACS Omega, 7 (44). pp. 39690-39696.
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Abstract
The deposition of tin sulfide (SnS) nanostructured films using a continuous spray pyrolysis technique is reported with an electric field present at the nozzle for influencing the atomization and the subsequent film deposition. In the absence of the electric field, the X-ray diffraction pattern shows the orthorhombic phase of SnS with a crystallographic preferred orientation along the (040) plane. The application of the electric field results in significant improvement in the morphology and a reduction in surface roughness (28 nm from 37 nm). The direct optical band gap of the films deposited with and without the electric field is estimated to be 1.5 and 1.7 eV, respectively. The photothermal deflection spectroscopy studies show a lower energetic disorder (no Urbach tail), which indicates an annealing effect in the SnS films deposited under the electric field. The improvement in the film properties is reflected in the expected improvement in the power conversion efficiency (PCE) of dye-sensitized solar cells fabricated using the SnS film as a counter electrode. An enhancement of PCE from 2.07 for the film deposited without the electric field to 2.89 for the film deposited with the electric field shows the role of the electric field in the fabrication of improved SnS films. © 2022 American Chemical Society. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Publication: | ACS Omega |
| Publisher: | American Chemical Society |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 01 Jan 2023 07:24 |
| Last Modified: | 01 Jan 2023 07:24 |
| URI: | https://eprints.iisc.ac.in/id/eprint/78646 |
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