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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2408.05594 |
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| _version_ | 1866916447266013184 |
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| author | Özdemir, Mustafa Çoşkun Ünlü, Caner Özönder, Şener |
| author_facet | Özdemir, Mustafa Çoşkun Ünlü, Caner Özönder, Şener |
| contents | We present time-dependent density functional theory (TDDFT) calculations of fluorescence emission energies for 284 distinct graphene quantum dots (GQDs) of varying shapes (square, hexagonal, and amorphous) and sizes ($\sim$1-2 nm). These GQDs are doped with one or two elements from B, N, O, S, and P at dopant percentages of 1.5%, 3%, 5%, and 7%. Our study systematically investigates the trends and patterns in emission energies as a function of shape, size, dopant type and dopant percentage. Twelve structures are identified to have emission wavelengths in the visible spectrum. The emission energies derived from our calculations can guide the formulation of specific GQD mixtures to achieve desired emission spectra within and beyond the visible range for industrial applications. Furthermore, the extensive dataset, including emission energies along with molecular structures generated in this work, creates a DFT dateset for further machine learning studies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_05594 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unveiling the Design Rules for Tunable Emission in Graphene Quantum Dots: A High-Throughput TDDFT and Machine Learning Perspective Özdemir, Mustafa Çoşkun Ünlü, Caner Özönder, Şener Materials Science Mesoscale and Nanoscale Physics Computational Physics Optics We present time-dependent density functional theory (TDDFT) calculations of fluorescence emission energies for 284 distinct graphene quantum dots (GQDs) of varying shapes (square, hexagonal, and amorphous) and sizes ($\sim$1-2 nm). These GQDs are doped with one or two elements from B, N, O, S, and P at dopant percentages of 1.5%, 3%, 5%, and 7%. Our study systematically investigates the trends and patterns in emission energies as a function of shape, size, dopant type and dopant percentage. Twelve structures are identified to have emission wavelengths in the visible spectrum. The emission energies derived from our calculations can guide the formulation of specific GQD mixtures to achieve desired emission spectra within and beyond the visible range for industrial applications. Furthermore, the extensive dataset, including emission energies along with molecular structures generated in this work, creates a DFT dateset for further machine learning studies. |
| title | Unveiling the Design Rules for Tunable Emission in Graphene Quantum Dots: A High-Throughput TDDFT and Machine Learning Perspective |
| topic | Materials Science Mesoscale and Nanoscale Physics Computational Physics Optics |
| url | https://arxiv.org/abs/2408.05594 |