Ubiquitous organic molecule-based free-standing nanowires with ultra-high aspect ratios

Author:

Kamiya Koshi,Kayama Kazuto,Nobuoka Masaki,Sakaguchi Shugo,Sakurai TsuneakiORCID,Kawata Minori,Tsutsui Yusuke,Suda MasayukiORCID,Idesaki Akira,Koshikawa Hiroshi,Sugimoto Masaki,Lakshmi G. B. V. S.,Avasthi D. K.,Seki ShuORCID

Abstract

AbstractThe critical dimension of semiconductor devices is approaching the single-nm regime, and a variety of practical devices of this scale are targeted for production. Planar structures of nano-devices are still the center of fabrication techniques, which limit further integration of devices into a chip. Extension into 3D space is a promising strategy for future; however, the surface interaction in 3D nanospace make it hard to integrate nanostructures with ultrahigh aspect ratios. Here we report a unique technique using high-energy charged particles to produce free-standing 1D organic nanostructures with high aspect ratios over 100 and controlled number density. Along the straight trajectory of particles penetrating the films of various sublimable organic molecules, 1D nanowires were formed with approximately 10~15 nm thickness and controlled length. An all-dry process was developed to isolate the nanowires, and planar or coaxial heterojunction structures were built into the nanowires. Electrical and structural functions of the developed standing nanowire arrays were investigated, demonstrating the potential of the present ultrathin organic nanowire systems.

Funder

MEXT | Japan Society for the Promotion of Science

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry

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