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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.16377 |
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| _version_ | 1866918343781384192 |
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| author | Ebert, Adrian Fromme, Simon Burgert, Lisa Rashid, Umar Gerhard, Lukas Feye, Julia Kuppusamy, Senthil Kumar Brachnakova, Barbora Neumann, Timo Ruben, Mario Roesky, Peter W. Seitz, Michael Wulfhekel, Wulf |
| author_facet | Ebert, Adrian Fromme, Simon Burgert, Lisa Rashid, Umar Gerhard, Lukas Feye, Julia Kuppusamy, Senthil Kumar Brachnakova, Barbora Neumann, Timo Ruben, Mario Roesky, Peter W. Seitz, Michael Wulfhekel, Wulf |
| contents | The application of rare-earth complexes in electrically driven light sources poses a series of challenges that require specific optimization of the molecular photophysical properties. Here, we present a report on films of three different Eu3+ complexes characterized in terms of emission spectra and fluorescence decay. We compare molecular complexes in powder form and sublimed films, in films on glass and on a metal surface, and in films of thicknesses down to less than 3 nm (< 3 ML), approaching electrical coupling. Our photoluminescence experiments supported by scanning tunneling microscopy of sub-monolayers indicate that Eu3+(trensal) complexes are less affected by sublimation and more stable on the metal surface than typical beta diketonate complexes, making them promising candidates for electroluminescence devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_16377 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Photophysical properties of Eu3+ complexes approaching electronic contact to a metal surface Ebert, Adrian Fromme, Simon Burgert, Lisa Rashid, Umar Gerhard, Lukas Feye, Julia Kuppusamy, Senthil Kumar Brachnakova, Barbora Neumann, Timo Ruben, Mario Roesky, Peter W. Seitz, Michael Wulfhekel, Wulf Mesoscale and Nanoscale Physics The application of rare-earth complexes in electrically driven light sources poses a series of challenges that require specific optimization of the molecular photophysical properties. Here, we present a report on films of three different Eu3+ complexes characterized in terms of emission spectra and fluorescence decay. We compare molecular complexes in powder form and sublimed films, in films on glass and on a metal surface, and in films of thicknesses down to less than 3 nm (< 3 ML), approaching electrical coupling. Our photoluminescence experiments supported by scanning tunneling microscopy of sub-monolayers indicate that Eu3+(trensal) complexes are less affected by sublimation and more stable on the metal surface than typical beta diketonate complexes, making them promising candidates for electroluminescence devices. |
| title | Photophysical properties of Eu3+ complexes approaching electronic contact to a metal surface |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.16377 |