Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell
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...
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Springer Science and Business Media Deutschland GmbH
2025
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| author | Manap A. Mahalingam S. Rabeya R. Lau K.S. Chia C.H. Liew P.J. |
| author2 | 57200642155 |
| author_facet | 57200642155 Manap A. Mahalingam S. Rabeya R. Lau K.S. Chia C.H. Liew P.J. |
| author_sort | Manap A. |
| building | UNITEN Library |
| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | 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 efficiency. The PEG-GQDs produced enhanced blue luminescence and good ultraviolet-to-visible light absorption with minimum structural defects confirmed by the Raman results. PEG also functions as a linker, facilitating the effective 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 efficiency (0.93%) compared to the DSSC based on PEG-GQDs (1.27%). Graphical abstract: (Figure presented.) ? The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024. |
| format | Article |
| id | my.uniten.dspace-36433 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Springer Science and Business Media Deutschland GmbH |
| record_format | dspace |
| spelling | my.uniten.dspace-364332025-03-03T15:42:24Z Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell Manap A. Mahalingam S. Rabeya R. Lau K.S. Chia C.H. Liew P.J. 57200642155 55434075500 57207761973 57196329217 57215089308 55361533100 Catalyst activity Conversion efficiency Dye-sensitized solar cells Graphene Light absorption Nanocrystals Passivation Polyethylenes Quantum efficiency Semiconductor quantum dots Cell-based Chemical characteristic Direct contact Dye- sensitized solar cells Optical characteristics Passivation layer Photons absorption Property Solar cell performance Structural characteristics Polyethylene glycols 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 efficiency. The PEG-GQDs produced enhanced blue luminescence and good ultraviolet-to-visible light absorption with minimum structural defects confirmed by the Raman results. PEG also functions as a linker, facilitating the effective 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 efficiency (0.93%) compared to the DSSC based on PEG-GQDs (1.27%). Graphical abstract: (Figure presented.) ? The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024. Final 2025-03-03T07:42:24Z 2025-03-03T07:42:24Z 2024 Article 10.1007/s00289-024-05222-z 2-s2.0-85187917371 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85187917371&doi=10.1007%2fs00289-024-05222-z&partnerID=40&md5=56ba52b000466c97757b30c1c34d8feb https://irepository.uniten.edu.my/handle/123456789/36433 81 12 10885 10896 Springer Science and Business Media Deutschland GmbH Scopus |
| spellingShingle | Catalyst activity Conversion efficiency Dye-sensitized solar cells Graphene Light absorption Nanocrystals Passivation Polyethylenes Quantum efficiency Semiconductor quantum dots Cell-based Chemical characteristic Direct contact Dye- sensitized solar cells Optical characteristics Passivation layer Photons absorption Property Solar cell performance Structural characteristics Polyethylene glycols Manap A. Mahalingam S. Rabeya R. Lau K.S. Chia C.H. Liew P.J. Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title | Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title_full | Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title_fullStr | Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title_full_unstemmed | Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title_short | Effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| title_sort | effect of polyethylene glycol in graphene quantum dots for dye-sensitized solar cell |
| topic | Catalyst activity Conversion efficiency Dye-sensitized solar cells Graphene Light absorption Nanocrystals Passivation Polyethylenes Quantum efficiency Semiconductor quantum dots Cell-based Chemical characteristic Direct contact Dye- sensitized solar cells Optical characteristics Passivation layer Photons absorption Property Solar cell performance Structural characteristics Polyethylene glycols |
| url_provider | http://dspace.uniten.edu.my/ |