Adhesion improvement of polyaniline counter electrode in dye-sensitized solar cell using bio-based alkyd

Ramli, Mariam Fadzlina and Lim, Wen Huei and Ishak, Izwan and Su'ait, Mohd Sukor and Gan, Seng Neon and Phang, Sook-Wai (2021) Adhesion improvement of polyaniline counter electrode in dye-sensitized solar cell using bio-based alkyd. Applied Physics A: Materials Science & Processing, 127 (5). ISSN 0947-8396, DOI

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Recently, polyaniline (PAni) has shown promising performance in dye-sensitized solar cell (DSSC) but PAni exhibits poor adhesion on fluorine-doped tin oxide (FTO) substrate. In this study, a bio-based alkyd PAni counter electrode (CE) was developed by modifying PAni with a palm oil-based alkyd (POBA) to improve the adhesion of PAni on FTO substrate. PAni-AOT was synthesized via chemical oxidative polymerization using dioctyl sodium sulfosuccinate (AOT) as dopant, while POBA was prepared through alcoholysis and polycondensation reactions. The preparation of PAni-AOT modified with POBA (PAni-AOT/POBA) films was investigated using different reactive diluents such as methyl acrylate, methyl methacrylate and cyclohexyl methacrylate (CMA) under UV curing method. Chemical structures of PAni-AOT, POBA and PAni-AOT/POBA were confirmed by Fourier transform infrared (FTIR), ultraviolet-visible (UV-Vis) and proton nuclear magnetic resonance (H-1 NMR) analyses. PAni-AOT/POBA films, with CMA diluent, recorded the lowest curing time of 5 minutes with high electrical conductivity of 6.49 x 10(2) Scm (- 1) and best adhesion of 5B on FTO substrate. Conductivity and adhesion are crucial factors that contribute to high power conversion efficiency (PCE) of DSSC. The fabrications of DSSC were prepared using titanium dioxide photoanode, ruthenium dye, PAni-AOT/POBA as CE and iodolyte electrolyte. A moderate PCE of 0.65% in DSSC was successfully obtained. These results confirmed that PAni-AOT/POBA as CE can potentially be applied as cost-effective and bio-based materials used for DSSC study.

Item Type: Article
Funders: Malaysian Palm Oil Board (MPOB-Graduate Students Assistanship Scheme), University of Malaya Research Grant (PG199-2016A), Tunku Abdul Rahman University College (TARUC Internal Grant) (86003), Fundamental Research Grant Scheme, by Ministry of Higher Education Malaysia (FRGS/1/2015/TK07/UKM/03/01)
Uncontrolled Keywords: Polyaniline; Alkyd; Adhesion; Conductivity; Solar cell
Subjects: Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 05 Mar 2022 03:03
Last Modified: 05 Mar 2022 03:03

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