Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell
Efficiency; Graphene; Graphene quantum dots; Light absorption; Mixtures; Nanocrystals; Photosensitizers; Semiconductor quantum dots; Titanium dioxide; Affinity; Charge collection efficiency; Deposition methods; Dye- sensitized solar cells; Electron collections; High charges; Higher efficiency; Layer...
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2023
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my.uniten.dspace-269842023-05-29T17:38:23Z Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell Mahalingam S. Manap A. Lau K.S. Omar A. Chelvanathan P. Chia C.H. Amin N. Mathews I.J. Afandi N.F. Rahim N.A. 55434075500 57200642155 57196329217 55641720200 35766323200 57215089308 7102424614 57384711500 57189231851 57202054554 Efficiency; Graphene; Graphene quantum dots; Light absorption; Mixtures; Nanocrystals; Photosensitizers; Semiconductor quantum dots; Titanium dioxide; Affinity; Charge collection efficiency; Deposition methods; Dye- sensitized solar cells; Electron collections; High charges; Higher efficiency; Layer by layer; Layer-by-layer assemblies; Photo-anodes; Dye-sensitized solar cells Unambiguously layer by layer (LBL) assembly of graphene quantum dots (GQDs), and dye (GQDs/dye) on TiO2 photoanode is the traditional and straightforward approach in the fabrication of graphene quantum dot-cosensitized solar cells (QDSSCs). Unfortunately, limited light absorption and low affinity of GQDs to TiO2 surface shadow the advantages of LBL and constrain its practical application. Herein, a new strategy of mixture configuration (GQDs+dye) was investigated. The experimental results demonstrated that the mixture of GQDs+N719 exhibited the highest efficiency of 3.01%. The increased Jsc (5.075 mA/cm2) and high charge collection efficiency (0.96) in the mixture sample indicated enhanced electron collection at TiO2. The less -OH groups on TiO2 provide a good surface intact of GQDs and N719, thus increasing the affinity between the photoanode and photosensitizers. In addition to that, the high surface potential (33.47 mV) of the premixed sample restricted the photogenerated electrons to go into a deep state, reducing back electron transfer. Therefore, mixture assembly of co-sensitization is an effective approach for light-harvesting in QDSSC. � 2021 Final 2023-05-29T09:38:23Z 2023-05-29T09:38:23Z 2022 Article 10.1016/j.electacta.2021.139732 2-s2.0-85121665175 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121665175&doi=10.1016%2fj.electacta.2021.139732&partnerID=40&md5=cbda664a973e1cb8fbf7f7e02b6459ed https://irepository.uniten.edu.my/handle/123456789/26984 404 139732 Elsevier Ltd Scopus |
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Efficiency; Graphene; Graphene quantum dots; Light absorption; Mixtures; Nanocrystals; Photosensitizers; Semiconductor quantum dots; Titanium dioxide; Affinity; Charge collection efficiency; Deposition methods; Dye- sensitized solar cells; Electron collections; High charges; Higher efficiency; Layer by layer; Layer-by-layer assemblies; Photo-anodes; Dye-sensitized solar cells |
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55434075500 |
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55434075500 Mahalingam S. Manap A. Lau K.S. Omar A. Chelvanathan P. Chia C.H. Amin N. Mathews I.J. Afandi N.F. Rahim N.A. |
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Article |
| author |
Mahalingam S. Manap A. Lau K.S. Omar A. Chelvanathan P. Chia C.H. Amin N. Mathews I.J. Afandi N.F. Rahim N.A. |
| spellingShingle |
Mahalingam S. Manap A. Lau K.S. Omar A. Chelvanathan P. Chia C.H. Amin N. Mathews I.J. Afandi N.F. Rahim N.A. Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| author_sort |
Mahalingam S. |
| title |
Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| title_short |
Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| title_full |
Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| title_fullStr |
Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| title_full_unstemmed |
Mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| title_sort |
mixture deposition method for graphene quantum dots-based dye-sensitized solar cell |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
| _version_ |
1806424803691724800 |
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13.214268 |