The actual electronic band structure of a rubrene single crystal
| Autor: | E. Annese, Kazuyuki Sakamoto, Jun Nitta, Jun Fujii, Kazumoto Miwa, Shimpei Ono, Naoki Komiya |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Electron mobility Materials science Chemical physics lcsh:Medicine Article 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine rubrene lcsh:Science Electronic band structure Rubrene HOMO/LUMO Multidisciplinary business.industry lcsh:R Organic molecules in materials science ARPES Organic semiconductor 030104 developmental biology chemistry Molecular vibration electronic band structure Optoelectronics lcsh:Q business Dispersion (chemistry) Single crystal 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports Scientific reports (Nature Publishing Group) 9 (2019): 9645. doi:10.1038/s41598-019-46080-4 info:cnr-pdr/source/autori:Nitta, Jun; Miwa, Kazumoto; Komiya, Naoki; Annese, Emilia; Fujii, Jun; Ono, Shimpei; Sakamotat, Kazuyuki/titolo:The actual electronic band structure of a rubrene single crystal/doi:10.1038%2Fs41598-019-46080-4/rivista:Scientific reports (Nature Publishing Group)/anno:2019/pagina_da:9645/pagina_a:/intervallo_pagine:9645/volume:9 Scientific Reports, Vol 9, Iss 1, Pp 1-7 (2019) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-019-46080-4 |
| Popis: | A proper understanding on the charge mobility in organic materials is one of the key factors to realize highly functionalized organic semiconductor devices. So far, however, although a number of studies have proposed the carrier transport mechanism of rubrene single crystal to be band-like, there are disagreements between the results reported in these papers. Here, we show that the actual dispersion widths of the electronic bands formed by the highest occupied molecular orbital are much smaller than those reported in the literature, and that the disagreements originate from the diffraction effect of photoelectron and the vibrations of molecules. The present result indicates that the electronic bands would not be the main channel for hole mobility in case of rubrene single crystal and the necessity to consider a more complex picture like molecular vibrations mediated carrier transport. These findings open an avenue for a thorough insight on how to realize organic semiconductor devices with high carrier mobility. |
| Databáze: | OpenAIRE |
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