The structure and electronic properties of copper iodide 1D nanocrystals within single walled carbon nanotubes

18th Microscopy of Semiconducting Materials Conference

物理学;材料科学

Kiselev, N.A.^1 ; Kumskov, A.S.^1 ; Zhigalina, V.G.^1 ; Verbitskiy, N.I.^2 ; Yashina, L.V.^3 ; Chuvilin, A.L.^4,5 ; Vasiliev, A.L.^1,6 ; Eliseev, A.A.^2

Institute of Crystallography RAS, 119333 Moscow, Russia^1

Department of Materials Science, Moscow State University, 119992 Moscow, Russia^2

Chemistry Department, Moscow State University, 119992 Moscow, Russia^3

CIC NanoGUNE Consolider, E-20018 Donostia-San-Sebastián, Spain^4

IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain^5

NRC Kurchatov Institute, 123182, Moscow, Russia^6

关键词: 1-d crystals;    1D nanocrystals;    Arc discharge;    Chemical vapour deposition;    Close packed;    Copper iodide;    Tetrahedral position;    Threedimensional (3-d);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/471/1/012035/pdf
DOI  :  10.1088/1742-6596/471/1/012035

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Copper iodide one-dimensional nanocrystals within single walled carbon nanotubes (1D CuI@SWCNTs), i.e. meta-nanotubes [1], were investigated by high resolution electron microscopy (HRTEM). In meta-nanotubes of diameter Dm= 1.3-1.4 nm produced by arc-discharge (AD) method close-packed hexagonal or deformed cubic 1D crystal anion sublattices were observed with cations in octahedral or tetrahedral positions. These two sublattices reversibly transform to one another. In catalysed chemical vapour deposition (CCVD) meta-nanotubes of diameters Dm= 1.5-2.0 nm cubic anion sublattices are formed. For diameters ≥2.0 nm three-dimensional (3D) crystallization is observed.