[23p-E101-1~10] 一次元・二次元融合物質系：ナノチューブ・原子層・ヘテロ積層の科学

▲ [23p-E101-6] Optical properties of 1D/2D mixed dimensional heterostructures and their integration into photonic devices

〇Yuichiro K. Kato¹ (1.RIKEN)

キーワード：2D materials, carbon nanotubes, optical properties

Intense research on two-dimensional semiconductors such as transition metal dichalcogenides has revealed rich optical phenomena, where layer numbers and twist angles play important roles. Additional degrees of freedom would be available in heterostructures with carbon nanotubes, a one-dimensional semiconductor. Here we discuss our recent efforts on 1D/2D mixed dimensional semiconductor heterostructures [1-3]. We demonstrate that hexagonal boron nitride, a widely studied two-dimensional insulator, is an ideal substrate for carbon nanotubes [1]. Using boron nitride flakes as ultrathin spacers for nanotubes and photonic crystal nanobeam cavity, deterministic coupling of a nanotube emitter to the cavity is demonstrated by a transfer process utilizing anthracene crystals [2]. Recently, we have also used the same transfer process to examine the effects of atomically thin materials on cavities [3] and to fabricate mixed dimensional semiconductor heterostructures.

[1] N. Fang, K. Otsuka, A. Ishii, T. Taniguchi, K. Watanabe, K. Nagashio, Y. K. Kato, ACS Photonics 7, 1773 (2020).
[2] K. Otsuka, N. Fang, D. Yamashita, T. Taniguchi, K. Watanabe, Y. K. Kato, Nat. Commun. 12, 3138 (2021).
[3] N. Fang, D. Yamashita, S. Fujii, K. Otsuka, T. Taniguchi, K. Watanabe, K. Nagashio, Y. K. Kato, in preparation.