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| 題名: | Tuning the electrical memory characteristics from volatile to nonvolatile by perylene imide composition in random copolyimides |
| 作者: | 劉振良;Kurosawa, Tadanori;Lai, Yi-Cang;Higashihara, Tomoya;Ueda, Mitsuru;Liu, Cheng-Liang;Chen, Wen-Chang |
| 貢獻者: | 工學院化學工程與材料工程學系 |
| 關鍵詞: | aluminum;anhydrides;Applied sciences;Compound structure devices;computer hardware;electric power;electrodes;Electronics;energy;Exact sciences and technology;moieties;Organic polymers;Physicochemistry of polymers;Polymers with particular properties;Preparation, kinetics, thermodynamics, mechanism and catalysts;Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices |
| 日期: | 2012-06-12 |
| 上傳時間: | 2026-04-21 13:57:10 (UTC+8) |
| 出版者: | American Chemical Society;Washington, DC: American Chemical Society |
| 摘要: | 摘要： Random copolyimides, PI–PBIX, with different compositions of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), N,N′-bis(4-aminophenyl)-3,4,9,10-perylenebis(dicarboximide) (PBI), and 4,4′-diamino-4″-methyltriphenylamine (AMTPA) were designed and synthesized for resistive-switching memory device applications. By varying the feeding ratio of monomers, PI–PBIX (where X = 0, 1, 2.5, 5, and 10 for molar composition of repeating units containing PBI) showed tunable optical and electronic properties through the charge transfer between AMTPA and PBI. Also, the memory devices prepared from PI–PBIX sandwiched between ITO and Al electrodes exhibited the tunable electrical bistability from the volatile to nonvolatile write once read many-times (WORM) memory characteristics as the PBI composition increased. The OFF/ON electrical switching transition was mainly attributed to the charge-transfer mechanism for charge-separated high conductance, based on the analysis of density function theory. Also, the volatility of PI–PBIX device depended on the stability of charge-transfer complex and charge trapping sites. The deep LUMO energy level of the PBI moiety increased the back-charge-transfer energy barrier and prevented recombination of segregated charges even through applying the high negative and positive voltage. The study revealed that the memory characteristics could be tailored from the donor–acceptor composition in the random copolyimides.
其他題名： Macromolecules
出版者： Washington, DC: American Chemical Society
出版日期： 2012-06-12
出處： Macromolecules, 2012-06, Vol.45 (11), p.4556-4563
資源來源： American Chemical Society Journals
版權： Copyright © 2012 American Chemical Society
版權： 2015 INIST-CNRS
識別號： ISSN: 0024-9297
識別號： ISSN: 1520-5835
識別號： EISSN: 1520-5835
識別號： DOI: 10.1021/ma300732m
識別號： CODEN: MAMOBX |
| 顯示於類別: | [化學工程與材料工程學系 ] 期刊論文
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