Lignite-derived nanocarbon as surface passivator and cosensitizer in dye-sensitized solar cell
- Title
- Lignite-derived nanocarbon as surface passivator and cosensitizer in dye-sensitized solar cell
- Creator
- Rao A.A.; Upadhyay S.; Narendhiran S.; Jafri Razack I.; Balachandran M.
- Description
- Interfacial exciton recombination and narrow absorption region are two bottlenecks that limit the performance of a dye-sensitized solar cell (DSSC). The present study focuses on improving the solar cell's efficiency by utilizing a lignite-derived nanocarbon that behaves as a surface passivator and cosensitizer. Incorporating nanocarbon enhanced the spectral absorption region of the N719 dye with a bathochromic shift and played the role of a cosensitizer. In addition, the quenched photoluminescence spectra revealed that nanocarbon also aids in the swift transfer of electrons to the conduction band of TiO2 by reducing the exciton recombination and acting as a surface passivator. On measuring the fabricated DSSC under AM 1.5G irradiation with the intensity of 100 mW/cm2, the nanocarbon-based device exhibited an efficiency (?) of 9.02% with a photocurrent density of 20.45 mA/cm2, outperforming the pristine device (? = 6.21%). An enhancement of 45% in the power conversion efficiency was achieved. Thus, the results unveiled that nanocarbons derived from pollution-causing fuel synergistically aided in enhancing the performance of DSSC. 2024 Elsevier Ltd
- Source
- Materials Today Energy, Vol-41
- Date
- 2024-01-01
- Publisher
- Elsevier Ltd
- Subject
- Charge dynamics; Cosensitizer; Flat band potential; Green photoluminescence; Lignite nanocarbons; Surface passivation
- Coverage
- Rao A.A., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Upadhyay S., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Narendhiran S., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Jafri Razack I., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Balachandran M., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India
- Rights
- Restricted Access
- Relation
- ISSN: 24686069
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Rao A.A.; Upadhyay S.; Narendhiran S.; Jafri Razack I.; Balachandran M., “Lignite-derived nanocarbon as surface passivator and cosensitizer in dye-sensitized solar cell,” CHRIST (Deemed To Be University) Institutional Repository, accessed April 28, 2025, https://archives.christuniversity.in/items/show/13193.