Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.18824 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916619851137024 |
|---|---|
| author | Graziosi, Patrizio Della Valle, Raffaele Guido Salzillo, Tommaso d'Agostino, Simone Zangari, Martina Cane', Elisabetta Masino, Matteo Venuti, Elisabetta |
| author_facet | Graziosi, Patrizio Della Valle, Raffaele Guido Salzillo, Tommaso d'Agostino, Simone Zangari, Martina Cane', Elisabetta Masino, Matteo Venuti, Elisabetta |
| contents | We have developed a first-principles method to calculate the electron-phonon coupling for specific modes and q-points in the Brillouin Zone for crystalline organic semiconductors. Using the obtained coupling strengths, we propose an approach to compute the temperature-dependent mobilities of electrons and holes. This methodology is applied to both bulk and thin-film polymorphs of tetracene. To validate our treatment of the electronic structures and vibrational properties, we calculate the Raman spectra in the lattice-phonon region and compare them with experimental data. We then compare the computed mobilities with available data for single crystals, finding good agreement within the experimental range, especially when accounting for possible charged impurities. Finally, we discuss the observed differences between the polymorphs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_18824 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electron-phonon coupling and mobility modeling in organic semiconductors: method and application to tetracene polymorphs Graziosi, Patrizio Della Valle, Raffaele Guido Salzillo, Tommaso d'Agostino, Simone Zangari, Martina Cane', Elisabetta Masino, Matteo Venuti, Elisabetta Materials Science We have developed a first-principles method to calculate the electron-phonon coupling for specific modes and q-points in the Brillouin Zone for crystalline organic semiconductors. Using the obtained coupling strengths, we propose an approach to compute the temperature-dependent mobilities of electrons and holes. This methodology is applied to both bulk and thin-film polymorphs of tetracene. To validate our treatment of the electronic structures and vibrational properties, we calculate the Raman spectra in the lattice-phonon region and compare them with experimental data. We then compare the computed mobilities with available data for single crystals, finding good agreement within the experimental range, especially when accounting for possible charged impurities. Finally, we discuss the observed differences between the polymorphs. |
| title | Electron-phonon coupling and mobility modeling in organic semiconductors: method and application to tetracene polymorphs |
| topic | Materials Science |
| url | https://arxiv.org/abs/2407.18824 |