A novel method to fabricate a molecular quantum structure: Selective growth of C-60 on layered material heterostructures

概要

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We propose a new method to fabricate nano-scale devices consisting of C-60. C-60 molecules have a spherical shape with a diameter of 0.7 nm. It may be possible to consider each molecule as a quantum dot to fabricate a single-electron-tunneling device which will work at room temperature. In order to control the position of a C-60 molecule on a device substrate, we have developed a "selective growth" technique on layered material heterostructure substrates, which utilizes the difference in the nucleation process of C-60 molecules on various kinds of layered materials. To clarify the selective,growth mechanism, the density of C-60 islands grown on different layered material substrates was measured using atomic force microscopy. It has been suggested that differences in the adsorption and diffusion energies of a C60 molecule on layered materials influence the selective growth.
社団法人応用物理学会の論文
1999-01-30