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Local electrical modification of a conductivity-switching polyimide film formed by molecular layer deposition

机译:通过分子层沉积形成的电导率转换聚酰亚胺薄膜的局部电改性

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摘要

The electrical modification of a conductivity-switching polyimide film via molecular layer deposition (MLD) is studied for ultrahigh density data storage based on a scanning probe microscope (SPM). A PMDA-ODA (PMDA = 1, 2, 3, 5-benzenetetracarboxylic anhydride, ODA = 4, 4-oxydianiline) film as a recording medium is uniformly formed from a self-assembled monolayer on a Au surface by MLD. It is demonstrated that the conductivity of the film can be changed by applying a voltage between a SPM probe and the film. This conductivity-switching phenomenon is discussed by the molecular orbital approach and considered to be caused by the charge transfer effect or carrier trapping effect of PMDA-ODA.
机译:研究了通过分子层沉积(MLD)进行电导率转换的聚酰亚胺薄膜的电修饰,以基于扫描探针显微镜(SPM)进行超高密度数据存储。作为记录介质的PMDA-ODA(PMDA = 1、2、3、5-苯四甲酸酐,ODA = 4、4-氧二苯胺)膜通过MLD由Au表面上的自组装单层均匀地形成。已经证明,可以通过在SPM探针和薄膜之间施加电压来改变薄膜的电导率。这种电导率转换现象已通过分子轨道方法进行了讨论,并被认为是由PMDA-ODA的电荷转移效应或载流子俘获效应引起的。

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