Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells
In this study, the blue and green carbon quantum dots (CQDs) are synthesized and applied to the photo-electrodes of dye-sensitized solar cells (DSSCs). The DSSCs exhibited high power conversion efficiency because of the conversion of ultraviolet to the visible region in photo-anode, and good catalyt...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023007387 |
| _version_ | 1797385173153611776 |
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| author | Rajesh Cheruku Jae Hong Kim V.B Murali Krishna P. Periyat Sarathbabu Duvvuri SSSR, sarath.duvvuri@svecw.edu.in |
| author_facet | Rajesh Cheruku Jae Hong Kim V.B Murali Krishna P. Periyat Sarathbabu Duvvuri SSSR, sarath.duvvuri@svecw.edu.in |
| author_sort | Rajesh Cheruku |
| collection | DOAJ |
| description | In this study, the blue and green carbon quantum dots (CQDs) are synthesized and applied to the photo-electrodes of dye-sensitized solar cells (DSSCs). The DSSCs exhibited high power conversion efficiency because of the conversion of ultraviolet to the visible region in photo-anode, and good catalytic activity in the photo-cathode. The blue color CQDs (BCQDs) and green color CQDs (GCQDs) are synthesized from the citric acid in a single pot process. We examine the influence of both CQDs decorated on photo-anode and photo-cathode and both photo-electrodes on the photovoltaic performance of the DSSCs. Furthermore, the DSSCs are studied by electrochemical impedance spectroscopy, cyclic voltammetry, and Tafel polarization data to study the charge transfer kinetics. The better performance observed from the DSSCs due to enhanced charge carrier collection through the CQDs. The photovoltaic results of DSSCs shown that the best efficiency shown by DSSC, which fabricated by both photo-electrodes decorated by CQDs. |
| first_indexed | 2024-03-08T21:50:19Z |
| format | Article |
| id | doaj.art-c0140faefb1448efb72446e7b836de66 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-08T21:50:19Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-c0140faefb1448efb72446e7b836de662023-12-20T07:36:23ZengElsevierResults in Engineering2590-12302023-12-0120101611Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cellsRajesh Cheruku0Jae Hong Kim1V.B Murali Krishna2P. Periyat3Sarathbabu Duvvuri SSSR, sarath.duvvuri@svecw.edu.in4Department of Physics, School of Engineering, Dayananda Sagar University, Bangalore, 560 068, India; Department of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea; Corresponding author. Department of Physics, School of Engineering, Dayananda Sagar University, Bangalore, 560 068, India.Department of Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea; Corresponding author.Department of Electrical Engineering, National Institute of Technology Andhra Pradesh, Tadepalligudem, 534 101, IndiaDepartment of Environmental Studies, Kannur University, 670 567, IndiaDepartment of Electrical and Electronics Engineering, Shri Vishnu Engineering College for Women Bhimavaram, 534 202, IndiaIn this study, the blue and green carbon quantum dots (CQDs) are synthesized and applied to the photo-electrodes of dye-sensitized solar cells (DSSCs). The DSSCs exhibited high power conversion efficiency because of the conversion of ultraviolet to the visible region in photo-anode, and good catalytic activity in the photo-cathode. The blue color CQDs (BCQDs) and green color CQDs (GCQDs) are synthesized from the citric acid in a single pot process. We examine the influence of both CQDs decorated on photo-anode and photo-cathode and both photo-electrodes on the photovoltaic performance of the DSSCs. Furthermore, the DSSCs are studied by electrochemical impedance spectroscopy, cyclic voltammetry, and Tafel polarization data to study the charge transfer kinetics. The better performance observed from the DSSCs due to enhanced charge carrier collection through the CQDs. The photovoltaic results of DSSCs shown that the best efficiency shown by DSSC, which fabricated by both photo-electrodes decorated by CQDs.http://www.sciencedirect.com/science/article/pii/S2590123023007387Light absorptionCarbon quantum dotsPhotosensitizerDye-sensitized solar cells |
| spellingShingle | Rajesh Cheruku Jae Hong Kim V.B Murali Krishna P. Periyat Sarathbabu Duvvuri SSSR, sarath.duvvuri@svecw.edu.in Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells Results in Engineering Light absorption Carbon quantum dots Photosensitizer Dye-sensitized solar cells |
| title | Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells |
| title_full | Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells |
| title_fullStr | Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells |
| title_full_unstemmed | Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells |
| title_short | Photo-electrodes decorated with carbon quantum dots: Efficient dye-sensitized solar cells |
| title_sort | photo electrodes decorated with carbon quantum dots efficient dye sensitized solar cells |
| topic | Light absorption Carbon quantum dots Photosensitizer Dye-sensitized solar cells |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023007387 |
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