Control over Molecular Architectures of Carbohydrate-Based Block Copolymers for Stretchable Electrical Memory Devices
Control over Molecular Architectures of Carbohydrate-Based Block Copolymers for Stretchable Electrical Memory Devices
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DOI：
10.1021/acs.macromol.8b00874
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发表时间：
2018-06
期刊：
影响因子：
5.5
通讯作者：
Chih‐Chien Hung;S. Nakahira;Yu‐Cheng Chiu;Takuya Isono;Hung‐Chin Wu;Kodai Watanabe;Y. Chiang;S. Takas
中科院分区：
文献类型：
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作者：
Chih‐Chien Hung;S. Nakahira;Yu‐Cheng Chiu;Takuya Isono;Hung‐Chin Wu;Kodai Watanabe;Y. Chiang;S. Takas
我们合成了一系列新的内在可拉伸嵌段共聚物（BCP）的线性AB型，ABA型，和星形结构组成的寡糖（MH）和灵活的聚（丙烯酸正丁酯）（PBA）块的应用在场效应晶体管存储器。BCP薄膜被用作存储器件中的电荷捕获层，其中BCP相分离成软PBA基质中的有序MH微区。MH微区作为电荷捕获位点，而软PBA基质提供可拉伸性。特别地，具有末端MH嵌段的ABA型和星形结构的BCP不仅显示出上级存储性能，而且形成物理网络，该物理网络赋予薄膜机械弹性，使得它们可以承受100%的应变而不形成裂纹。即使在50%的应变下拉伸和释放电荷捕获层1000次，器件的迁移率和存储窗口也几乎恒定。这项工作凸显了.
We synthesized a series of new intrinsically stretchable block copolymers (BCPs) in linear AB-type, ABA-type, and star-shaped architectures composed of oligosaccharide (MH) and flexible poly(n-butyl acrylate) (PBA) blocks for the application in field-effect transistor memory. The BCP thin films are used as the charge trapping layers in the memory devices where the BCPs phase separate into ordered MH microdomains in soft PBA matrices. The MH microdomain works as the charge-trapping sites while the soft PBA matrix provides a stretchability. In particular, the BCPs of the ABA-type and star-shaped architectures with the end MH blocks not only show superior memory performances but also form physical networks that impart mechanical resilience to the thin films such that they can endure 100% strain without formation of cracks. The mobilities and the memory windows of the devices are nearly constant even when the charge trapping layers are stretched and released at 50% strain for 1000 cycles. This work highlights...