Venkatesan, Ragavendran and Sheik Kadar Maideen, Sheik Moideen Thaha and Chandhiran, Saravanan and Kushvaha, Sunil Singh and Sagadevan, Suresh and Venkatachalapathy, Vishnukanthan and Mayandi, Jeyanthinath (2022) Fabrication and characterization of Si/PEDOT: PSS-based heterojunction solar cells. Electronics, 11 (24). ISSN 2079-9292, DOI https://doi.org/10.3390/electronics11244145.
Full text not available from this repository.Abstract
In this study, we fabricated a planar Si/PEDOT: PSS heterojunction solar cell using three different solvents-ethylene glycol, acetonitrile, and dimethyl sulfoxide-to find the best one. The fabricated samples were characterized by diffuse reflectance spectroscopy, scanning electron microscopy, X-ray diffraction, and current-voltage. Diffused reflectance spectrum analysis showed reduced reflectance compared to the bare silicon wafers. The absorbance spectrum shows the change in absorption of the Si-coated PEDOT: PSS which was more than a 50% increase in the UV region, and for the EG sample, there was a 20% increase in the entire visible spectrum. This indicates that the solvent plays a major role in the bandgap between the Si and Si/PEDOT: PSS. Scanning electron microscope (SEM) was used to examine the surface morphology of Si/PEDOT: PSS as agglomerated, island-formed surfaces and carbon-layered Si-PEDOT: PSS. Cross-sectional images show the thickness of the PEDOT: PSS layer on the silicon wafer surface. The X-ray diffraction (XRD) pattern shows the characteristic peaks for silicon (69.5 degrees), and Si/PEDOT: PSS shows a forbidden Si (200) peak at 32 degrees. Current-voltage measurements have shown the characteristic diode curve for all fabricated cells. This characteristic diode curve indicated the presence of a heterojunction. Ethylene glycol-containing cells showed current output as 0.2 mu A with V-oc of 0.2 V.
| Item Type: | Article |
|---|---|
| Funders: | CSIR-RA (Grant No: 09/201(0424)/19-EMR-1) |
| Uncontrolled Keywords: | Silicon; PEDOT; PSS; Heterojunction; Reflectance; Solar cell; Organic solvents |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 23 Nov 2023 03:51 |
| Last Modified: | 23 Nov 2023 03:51 |
| URI: | http://eprints.um.edu.my/id/eprint/40316 |
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