Fullerene Nanostructure-Coated Channels Activated by Electron Beam Lithography for Resistance Switching
Fullerene Nanostructure-Coated Channels Activated by Electron Beam Lithography for Resistance Switching
复制标题
DOI：
10.1021/acsanm.2c00523
复制
发表时间：
2022-04
影响因子：
5.9
通讯作者：
M. Takeuchi;Y. Umeta;H. Suga;T. Wakahara;Ying-Chiao Wang;Y. Naitoh;K. Wakabayashi;K. Tsukagoshi
中科院分区：
文献类型：
--
作者：
M. Takeuchi;Y. Umeta;H. Suga;T. Wakahara;Ying-Chiao Wang;Y. Naitoh;K. Wakabayashi;K. Tsukagoshi
富勒烯是完全由碳组成的球形分子，具有亚纳米尺寸的有吸引力的均匀形状和固有的物理和化学性质，使它们有希望用于纳米电子学。此外，富勒烯可以用取代元素进行化学官能化，这些取代元素已经被引入到器件中以显著改善其传输特性。化学官能化的富勒烯被称为富勒烯衍生物。利用化学功能化的富勒烯吡咯烷三酸（CPTA），我们开发了一种新的富勒烯电阻开关元件的器件制造方案，该元件由C60聚合物串的聚合和解聚产生。为了利用CPTA的性质，从而通过加强化学键与基材表面形成强相互作用，旋涂均匀的薄CPTA膜，随后通过电子束光刻（EBL）预设的设计扫描来刺激导电富勒烯聚合。聚合通道的电流-电压特性表现为负微分电阻，并表现为双态电阻开关，表明C60聚合物串的聚合和解聚受外电压输入的交替控制.基于溶液的纳米材料涂层的EBL制造具有自下而上的纳米电子学方案的潜力，允许设计固有的材料特性。
Fullerenes, which are spherical molecules composed entirely of carbon, have attractive homogeneous shapes at subnanometer sizes and inherent physical and chemical properties that make them promising for use in nanoelectronics. In addition, fullerenes can be chemically functionalized with substitutional elements, which have been incorporated into devices to substantially improve their transport properties. The chemically functionalized fullerenes are known as fullerene derivatives. Using the chemically functionalized fullerene pyrrolidine tris-acid (CPTA), we developed a new device fabrication scheme for a fullerene resistance-switching element generated by the polymerization and depolymerization of C60polymer strings. To take advantage of the CPTA property, whereby it forms strong interactions with the surface of a substrate by strengthening the chemical bonds, a uniform thin CPTA film was spin-coated, and conductive fullerene polymerization was subsequently stimulated by a designed scan with an electron beam lithography (EBL) preset. The polymerized channel showed negative differential resistance in its current–voltage characteristics and performed two-state resistance switching, indicating that the polymerization and depolymerization of the C60polymer strings were alternatively controlled according to the external voltage input. EBL fabrication with solution-based nanomaterial coating has the potential of a bottom-up scheme for nanoelectronics, allowing for the design of intrinsic material properties.