https://scholars.lib.ntu.edu.tw/handle/123456789/600318
標題: | Novel Authentic and Ultrafast Organic Photorecorders Enhanced by AIE-Active Polymer Electrets via Interlayer Charge Recombination | 作者: | Ke C.-Y Chen M.-N Chen M.-H Li Y.-T Chiu Y.-C GUEY-SHENG LIOU |
關鍵字: | AIE polymers;interlayer exciton;photonic transistor memory;polymer electrets;pulse PL;Electrets;Electric excitation;Electric fields;Excited states;Flash memory;Interface states;Laser recording;Nonvolatile storage;Optical communication;Virtual storage;Aggregation-induced emissions;Charge recombinations;Emission wavelength;Non-volatile memory;Optical storage devices;Parallel electric fields;Photonic transistors;Ultrafast photoresponse;Conjugated polymers | 公開日期: | 2021 | 卷: | 31 | 期: | 28 | 來源出版物: | Advanced Functional Materials | 摘要: | Organic photonic memory, featuring a variety of glamorously light-driven characteristics, is rapidly growing into an indispensable building block for next-generation optical communication systems. However, the ambiguity of their operating mechanism associated with the limitation of photoadaptive materials as an electronics promoter results in the slow development of photonic transistor-based devices. In this study, the conjugated polymers composed of donor–acceptor motifs with typical aggregation-induced emission (AIE) behaviors are designed and successfully discover high-performance photoprogrammable memory. Moreover, the mechanism of photoboosted recording behavior, attributed to the recombination of the formed interlayer excitons right after simultaneous excitation without applying vertical and parallel electric-field at the interface in-between active semiconductor and AIE polymers, is cautiously corroborated by steady-state PL and pulse PL measurements. The AIE-polymer memory devices perform ultrafast photoresponse time of 0.1?ms, an outstanding current switch ratio up to 106, and retention stability over 40?000 s without significant dissipation. Furthermore, photoresponsive AIE-polymer electrets not only modulate the memory performance through the emission wavelength but easily switch storage behavior of nonvolatile memory from flash to WORM by adjusting the torsion-angle through the motif of the donor and acceptor moieties. These findings open an avenue for designing conjugated polymer electret for ultrafast optical storage devices. ? 2021 Wiley-VCH GmbH |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109397313&doi=10.1002%2fadfm.202101288&partnerID=40&md5=8ca9edeffc8519dbab5462f37732f8cb https://scholars.lib.ntu.edu.tw/handle/123456789/600318 |
ISSN: | 1616301X | DOI: | 10.1002/adfm.202101288 |
顯示於: | 高分子科學與工程學研究所 |
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