Local work-function manipulation by external optical stimulation
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913241058246656 |
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| author | Böhnke, Jan Andres, Beatrice Boie, Larissa Richter, Angela Gahl, Cornelius Weinelt, Martin Bronsch, Wibke |
| author_facet | Böhnke, Jan Andres, Beatrice Boie, Larissa Richter, Angela Gahl, Cornelius Weinelt, Martin Bronsch, Wibke |
| contents | Strongly differing static dipole moments of the trans and cis isomers of photochromic azobenzene allow for optical switching the work function of azobenzene-functionalized self-assembled monolayers (SAMs). We apply these properties in a fundamental experiment to manipulate the area size of the switched SAM. Azobenzene molecules were excited by ultraviolet laser illumination and the transient isomerization profile of the SAM was spatially resolved recording photoemission electron microscopy (PEEM) images. Thereby we demonstrate the spatial tuning of the SAM work-function and discuss the role of the laser spot-profile in generating sharp edges or gradual changes of the work function. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_09375 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Local work-function manipulation by external optical stimulation Böhnke, Jan Andres, Beatrice Boie, Larissa Richter, Angela Gahl, Cornelius Weinelt, Martin Bronsch, Wibke Mesoscale and Nanoscale Physics Strongly differing static dipole moments of the trans and cis isomers of photochromic azobenzene allow for optical switching the work function of azobenzene-functionalized self-assembled monolayers (SAMs). We apply these properties in a fundamental experiment to manipulate the area size of the switched SAM. Azobenzene molecules were excited by ultraviolet laser illumination and the transient isomerization profile of the SAM was spatially resolved recording photoemission electron microscopy (PEEM) images. Thereby we demonstrate the spatial tuning of the SAM work-function and discuss the role of the laser spot-profile in generating sharp edges or gradual changes of the work function. |
| title | Local work-function manipulation by external optical stimulation |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.09375 |