Efect of polyethylene glycol in graphene quantum dots for dye‑sensitized solar cell

Manap, Abreeza and Mahalingam, Savisha and Rabeya, Ramisha and Kam, Sheng Lau and Chin, Hua Chia and Liew, Pay Jun (2024) Efect of polyethylene glycol in graphene quantum dots for dye‑sensitized solar cell. Polymer Bulletin, 81 (12). pp. 10885-10896. ISSN 0170-0839

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Abstract

This study aims to explore the optical, structural, and chemical characteristics of polyethylene glycol (PEG) on graphene quantum dots (GQDs) for use in dye-sensitized solar cells (DSSCs). Although GQDs have the potential to enhance photon absorption in DSSCs, direct contact with the dye can lead to the degradation of GQD properties and reduced DSSC performance. To address this issue, PEG was applied as a passivation layer on GQDs co-sensitized with N719 dye, resulting in improved DSSC efciency. The PEG-GQDs produced enhanced blue luminescence and good ultraviolet-to-visible light absorption with minimum structural defects confrmed by the Raman results. PEG also functions as a linker, facilitating the efective attachment of GQDs and dye. The nonpolar pro-oil groups on the GQD surface are adsorbed through coordination bond exchange (–OH functional group of the GQD), allowing for good dye permeability. The DSSC based on GQDs achieved a lower power conversion efciency (0.93%) compared to the DSSC based on PEGGQDs (1.27%).

Item Type:	Article
Uncontrolled Keywords:	Dye-sensitized solar cell, Graphene quantum dots, Polyethylene glycol
Divisions:	Faculty Of Industrial And Manufacturing Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	05 Feb 2025 16:02
Last Modified:	05 Feb 2025 16:02
URI:	http://eprints.utem.edu.my/id/eprint/28386
Statistic Details:	View Download Statistic

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