Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film
The molecular orientation and properties of vapor-deposited organic films are essential for device performance and typically governed by the deposition rate. Controlling the orientation during film growth allows the optimization of local properties from the interface to the bulk region. However, con...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/adac26 |
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| _version_ | 1823860382601576448 |
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| author | Sowon Kim Masahiro Ohara Hirohiko Fukagawa Hisao Ishii |
| author_facet | Sowon Kim Masahiro Ohara Hirohiko Fukagawa Hisao Ishii |
| author_sort | Sowon Kim |
| collection | DOAJ |
| description | The molecular orientation and properties of vapor-deposited organic films are essential for device performance and typically governed by the deposition rate. Controlling the orientation during film growth allows the optimization of local properties from the interface to the bulk region. However, conventional deposition faces challenges in rapid wide-ranging rate adjustment due to the required stabilization time. We introduce a velocity selector that enables instantaneous deposition rate changes by modulating the molecular transmission through blade rotation. Using the proposed selector, we precisely control the spontaneous orientation polarization in Alq _3 films by continuously varying deposition rates, achieving flexible polarization grading within organic films. |
| format | Article |
| id | doaj-art-e1a3d42151e74609ade321a730617693 |
| institution | Kabale University |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-e1a3d42151e74609ade321a7306176932025-02-10T14:45:24ZengIOP PublishingApplied Physics Express1882-07862025-01-0118202100110.35848/1882-0786/adac26Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic filmSowon Kim0https://orcid.org/0009-0001-9102-4598Masahiro Ohara1https://orcid.org/0000-0001-5072-067XHirohiko Fukagawa2https://orcid.org/0000-0001-5531-6510Hisao Ishii3https://orcid.org/0000-0002-7584-2769Graduate School of Science and Engineering, Chiba University , Inage, Chiba 263-8522, JapanCenter for Frontier Science, Chiba University , Inage, Chiba 263-8522, JapanCenter for Frontier Science, Chiba University , Inage, Chiba 263-8522, JapanGraduate School of Science and Engineering, Chiba University , Inage, Chiba 263-8522, Japan; Center for Frontier Science, Chiba University , Inage, Chiba 263-8522, Japan; Molecular Chirality Research Center, Chiba University , Inage, Chiba 263-8522, JapanThe molecular orientation and properties of vapor-deposited organic films are essential for device performance and typically governed by the deposition rate. Controlling the orientation during film growth allows the optimization of local properties from the interface to the bulk region. However, conventional deposition faces challenges in rapid wide-ranging rate adjustment due to the required stabilization time. We introduce a velocity selector that enables instantaneous deposition rate changes by modulating the molecular transmission through blade rotation. Using the proposed selector, we precisely control the spontaneous orientation polarization in Alq _3 films by continuously varying deposition rates, achieving flexible polarization grading within organic films.https://doi.org/10.35848/1882-0786/adac26organic filmorganic light-emitting diodemolecular orientationAlq3velocity selectordeposition rate |
| spellingShingle | Sowon Kim Masahiro Ohara Hirohiko Fukagawa Hisao Ishii Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film Applied Physics Express organic film organic light-emitting diode molecular orientation Alq3 velocity selector deposition rate |
| title | Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film |
| title_full | Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film |
| title_fullStr | Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film |
| title_full_unstemmed | Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film |
| title_short | Instantaneous deposition-rate modulator for vacuum vapor deposition: fabrication of polarization gradated organic film |
| title_sort | instantaneous deposition rate modulator for vacuum vapor deposition fabrication of polarization gradated organic film |
| topic | organic film organic light-emitting diode molecular orientation Alq3 velocity selector deposition rate |
| url | https://doi.org/10.35848/1882-0786/adac26 |
| work_keys_str_mv | AT sowonkim instantaneousdepositionratemodulatorforvacuumvapordepositionfabricationofpolarizationgradatedorganicfilm AT masahiroohara instantaneousdepositionratemodulatorforvacuumvapordepositionfabricationofpolarizationgradatedorganicfilm AT hirohikofukagawa instantaneousdepositionratemodulatorforvacuumvapordepositionfabricationofpolarizationgradatedorganicfilm AT hisaoishii instantaneousdepositionratemodulatorforvacuumvapordepositionfabricationofpolarizationgradatedorganicfilm |