Conjugated Donor‐Acceptor‐Acceptor (D‐A‐A) Molecule for Organic Nonvolatile Resistor Memory |
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| Authors: | Lei Dong Guangwu Li An‐Dih Yu Prof Zhishan Bo Prof Cheng‐Liang Liu Prof Wen‐Chang Chen |
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| Institution: | 1. Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan);2. Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875 (China);3. Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001 (Taiwan) |
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| Abstract: | A new donor‐acceptor‐acceptor (D‐A‐A) type of conjugated molecule, N‐(4‐(N′,N′‐diphenyl)phenylamine)‐4‐(4′‐(2,2‐dicyanovinyl)phenyl) naphthalene‐1,8‐dicarboxylic monoimide ( TPA‐NI‐DCN ), consisting of triphenylamine (TPA) donors and naphthalimide (NI)/dicyanovinylene (DCN) acceptors was synthesized and characterized. In conjunction with previously reported D ‐A based materials, the additional DCN moiety attached as end group in the D‐A‐A configuration can result in a stable charge transfer (CT) and charge‐separated state to maintain the ON state current. The vacuum‐deposited TPA‐NI‐DCN device fabricated as an active memory layer was demonstrated to exhibit write‐once‐read‐many (WORM) switching characteristics of organic nonvolatile memory due to the strong polarity of the TPA‐NI‐DCN moiety. |
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| Keywords: | charge transfer donor‐acceptor systems imides memory resistance switching triphenylamine |
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