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Hokkaido University Collection of Scholarly and Academic Papers >
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Sustained Flexible Photonic Transistor Memories Based on Fully Natural Floating Gate Electrets
| Title: | Sustained Flexible Photonic Transistor Memories Based on Fully Natural Floating Gate Electrets |
| Authors: | Chen, Chun-Kai Browse this author | | Ho, Jin-Chieh Browse this author | | Hung, Chih-Chien Browse this author | | Chen, Wei-Cheng Browse this author | | Satoh, Toshifumi Browse this author →KAKEN DB | | Chen, Wen-Chang Browse this author |
| Keywords: | hemin | | porphyrin | | degradable | | polylactic | | photonic memory |
| Issue Date: | 19-Jul-2023 |
| Publisher: | American Chemical Society |
| Journal Title: | ACS applied materials & interfaces |
| Volume: | 15 |
| Issue: | 28 |
| Start Page: | 33829 |
| End Page: | 33837 |
| Publisher DOI: | 10.1021/acsami.3c05981 |
| PMID: | 37428837 |
| Abstract: | Photonic transistor memory with high-speed communicationand energy-savingcapabilities has emerged as a new data storage technology. However,most floating-gate electrets are composed of quantum dots derivedfrom petroleum or metals, which are either toxic or harmful to theenvironment. In this study, an environmentally friendly floating-gateelectret made entirely from biomass-derived materials was designedfor photonic memories. The results show that the photosensitive heminand its derivative protoporphyrin IX (PPIX) were successfully embeddedin a polylactic acid (PLA) matrix. Correspondingly, their disparatephotochemistry and core structure strongly affected the photosensitivityand charge-trapping capacity of the prepared electrets. With an appropriateenergy-level alignment, the interlayer exciton formed with the correctalignment of energy levels within the PPIX/PLA electret. In addition,the demetallized core offered a unique relaxation dynamic and additionaltrapping sites to consolidate the charges. Correspondingly, the as-prepareddevice exhibited a memory ratio of up to 2.5 x 10(7) with photo-writing-electrical-erasing characteristics. Conversely,hemin demonstrated self-charge transfer during relaxation, makingit challenging for the device to store the charges and exhibit a photorecoverybehavior. Furthermore, the effect of trapping site discreteness onmemory performance was also investigated. The photoactive componentswere effectively distributed due to the high dipole-dipoleinteraction between the PLA matrix and PPIX, resulting in a sustainedmemory performance for at least 10(4) s after light removal.The photonic memory was also realized on a bio-derived dielectricflexible substrate. Accordingly, a reliable photorecording behaviorwas observed, wherein, even after 1000 cycles of bending under a 5mm bending radius, the data was retained for more than 10(4) s. To our knowledge, it is the first time that a two-pronged approachhas been used to improve the performance of photonic memories whileaddressing the issue of sustainability with a biodegradable electretmade entirely from natural materials. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-YXMUMPHWG9KQURHPV9EV. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/92718 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐藤 敏文
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