Modification of DSSC based on polymer composite gel electrolyte with copper oxide nanochain by shape effect

Farhana, Nur Khuzaimah and Omar, Fatin Saiha and Mohamad Saidi, Norshahirah and Ling, Goh Zhi and Bashir, Shahid and Subramaniam, Ramesh and Kasi, Ramesh and Iqbal, Javed and Wageh, Swelm and Algarni, Hamed and Al-Sehemi, Abdullah G. (2022) Modification of DSSC based on polymer composite gel electrolyte with copper oxide nanochain by shape effect. Polymers, 14 (16). ISSN 2073-4360, DOI

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Solvent evaporation and leakage of liquid electrolytes that restrict the practicality of dye-sensitized solar cells (DSSCs) motivate the quest for the development of stable and ionic conductive electrolyte. Gel polymer electrolyte (GPE) fits the criteria, but it still suffers from low efficiency due to insufficient segmental motion within the electrolytes. Therefore, incorporating metal oxide nanofiller is one of the approaches to enhance the performance of electrolytes due to the presence of cross-linking centers that can be coordinated with the polymer segments. In this research, polymer composite gel electrolytes (PCGEs) employing poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (P(VB-co-VA-co-VAc)) terpolymer as host polymer, tetrapropylammonium iodide (TPAI) as dopant salt, and copper oxide (CuO) nanoparticles as the nanofillers were produced. The CuO nanofillers were synthesized by sonochemical method and subsequently calcined at different temperatures (i.e., 200, 350, and 500 degrees C), denoted as CuO-200, CuO-350, and CuO-500, respectively. All CuO nanoparticles have different shapes and sizes that are connected in a chain which impact the amorphous phase and the roughness of the surface, proven by the structural and the morphological analyses. It was found that the PCGE consisting of CuO-350 exhibited the highest ionic conductivity of 2.54 mS cm(-1) and apparent diffusion coefficient of triiodide of 1.537 x 10(-4 )cm(2) s(-1). The enhancement in the electrochemical performance of the PCGEs is correlated with the change in shape (rod to sphere) and size of CuO particles which disrupted the structural order of the polymer chain, facilitating the redox couple transportation. Additionally, a DSSC was fabricated and achieved the highest power conversion efficiency of 7.05% with J SC of 22.1 mA cm(-2), Voc of 0.61 V, and FF of 52.4%.

Item Type: Article
Funders: Universiti Malaya [ST022-2021], King Khalid University through the Research Center for Advanced Materials Science (RCAMS) [RCAMS/KKU/007/21]
Uncontrolled Keywords: Calcination temperature; Copper oxide; DSSC; Polymer composite electrolyte; Ion diffusion
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Sep 2023 08:12
Last Modified: 20 Sep 2023 08:12

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