Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors
Exciton dissociation into free electron-hole carriers is a central issue in optoelectronic devices. Despite recent progress in free-carrier generation due to an admixture of organic compounds, strategies to prolong the lifetime of photo-induced carriers are limited. Herein, we present a proof-of-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/adcefa |
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| author | Nobutaka Osakabe Akifumi Yamamura Tatsuyuki Makita Yasunari Tamai Shun Watanabe Jun Takeya |
| author_facet | Nobutaka Osakabe Akifumi Yamamura Tatsuyuki Makita Yasunari Tamai Shun Watanabe Jun Takeya |
| author_sort | Nobutaka Osakabe |
| collection | DOAJ |
| description | Exciton dissociation into free electron-hole carriers is a central issue in optoelectronic devices. Despite recent progress in free-carrier generation due to an admixture of organic compounds, strategies to prolong the lifetime of photo-induced carriers are limited. Herein, we present a proof-of-concept of efficient exciton dissociation via heterogeneous device engineering; an insulating polymer layer adjacent to organic semiconductors (OSCs) in conjunction with an application of electrical voltage can capture photogenerated electrons selectively, and the resulting semipermanent built-in electric field gives rise to extraordinarily persistent photo-induced carriers, which lasts for more than half a year in single-crystalline OSCs. |
| format | Article |
| id | doaj-art-adbae2b506f84eb881916d4ba45d557e |
| institution | OA Journals |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-adbae2b506f84eb881916d4ba45d557e2025-08-20T02:16:44ZengIOP PublishingApplied Physics Express1882-07862025-01-0118505100110.35848/1882-0786/adcefaExtraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductorsNobutaka Osakabe0Akifumi Yamamura1Tatsuyuki Makita2Yasunari Tamai3Shun Watanabe4https://orcid.org/0000-0001-7377-6043Jun Takeya5Department of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, JapanDepartment of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, JapanDepartment of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, JapanDepartment of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, JapanDepartment of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, JapanDepartment of Advanced Material Science, Graduate School of Frontier Science, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa Chiba, 277-8561, Japan; International Center for Materials Nanoarchitectonics (WPI-MANA) , National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba Ibaraki, 205-0044, Japan; JST , CREST, 4-1-8 Honcho, Kawaguchi Saitama, 332-0012, JapanExciton dissociation into free electron-hole carriers is a central issue in optoelectronic devices. Despite recent progress in free-carrier generation due to an admixture of organic compounds, strategies to prolong the lifetime of photo-induced carriers are limited. Herein, we present a proof-of-concept of efficient exciton dissociation via heterogeneous device engineering; an insulating polymer layer adjacent to organic semiconductors (OSCs) in conjunction with an application of electrical voltage can capture photogenerated electrons selectively, and the resulting semipermanent built-in electric field gives rise to extraordinarily persistent photo-induced carriers, which lasts for more than half a year in single-crystalline OSCs.https://doi.org/10.35848/1882-0786/adcefaorganic semiconductorssingle-crystalline filmsexciton splittingthin-film transistorsnon-volatile memories |
| spellingShingle | Nobutaka Osakabe Akifumi Yamamura Tatsuyuki Makita Yasunari Tamai Shun Watanabe Jun Takeya Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors Applied Physics Express organic semiconductors single-crystalline films exciton splitting thin-film transistors non-volatile memories |
| title | Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors |
| title_full | Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors |
| title_fullStr | Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors |
| title_full_unstemmed | Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors |
| title_short | Extraordinarily persistent photo-induced carriers mediated by interfacial exciton splitter in organic single-crystalline semiconductors |
| title_sort | extraordinarily persistent photo induced carriers mediated by interfacial exciton splitter in organic single crystalline semiconductors |
| topic | organic semiconductors single-crystalline films exciton splitting thin-film transistors non-volatile memories |
| url | https://doi.org/10.35848/1882-0786/adcefa |
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