Surface Roughness Assisted Growth of Vertically Oriented Ferroelectric SbSI Nanorods

Abstract

We report the catalyst-free synthesis of arrays of c-axis oriented antimony sulfoiodide nanorods on anodic aluminum oxide (AAO) substrates by vapor phase deposition. The surface roughness of the AAO substrates played a decisive role in the orientation control of the SbSI nanorods produced. The as-grown SbSI nanorods were single-crystalline and ⟨001⟩ oriented, as revealed from the X-ray diffraction and transmission electron microscopy analysis. Switching spectroscopy-piezoresponse force microscopy experiments demonstrated, for the first time, the presence of switchable ferroelectricity and piezoelectricity in individual SbSI nanorods. Ferroelectric switching in the SbSI nanorods was found to occur via a 180°d omain reversal, because of the preferred orientation of the nanorods along their polar c-axis.

One‐Dimensional Ferroelectric Nanostructures: Synthesis, Properties, and Applications

“…However, difficulties associated with obtaining vertically aligned pure‐phase SbSI restrict its widespread application. Varghese et al recently reported on the catalyst‐free synthesis of c‐axis oriented SbSI NR arrays on AAO substrates by vapor phase deposition. The roughness of AAO substrates plays a decisive role in the orientation control of SbSI NRs.…”

Fast and low-temperature synthesis of one-dimensional (1D) single-crystalline SbSI microrod for high performance photodetector

“…4,5 It is highly anisotropic orthorhombic phase structure which consists of innite ribbon-like SbSI polar chains linked together and extend along c-axis, making its crystal preferentially to grow into one-dimensional (1D) structure anisotropically. 4,5 It is highly anisotropic orthorhombic phase structure which consists of innite ribbon-like SbSI polar chains linked together and extend along c-axis, making its crystal preferentially to grow into one-dimensional (1D) structure anisotropically.…”

“…4,5 It is highly anisotropic orthorhombic phase structure which consists of innite ribbon-like SbSI polar chains linked together and extend along c-axis, making its crystal preferentially to grow into one-dimensional (1D) structure anisotropically. 4,[7][8][9][10][11][12] As noted, chemical vapor deposition (CVD) is available for the growth of poly-crystalline bulk from their corresponding elements at temperature over 600 C, 7 and sonochemical process can produce SbSI at a relative low temperature below 100 C while the surface of the as-grown nanocrystals oen shows an amorphous layer. 4,[7][8][9][10][11][12] As noted, chemical vapor deposition (CVD) is available for the growth of poly-crystalline bulk from their corresponding elements at temperature over 600 C, 7 and sonochemical process can produce SbSI at a relative low temperature below 100 C while the surface of the as-grown nanocrystals oen shows an amorphous layer.…”

Recent Advances in Ferroelectric Nanosensors: Toward Sensitive Detection of Gas, Mechanothermal Signals, and Radiation

“…Zero-and one-dimensional ferroelectric nanomaterials have been fabricated using different processing methods, e.g., vapor-phase (Sb 2 S 3 nanowires [17], SbSI nanorods [18]), hydrothermal (BaTiO 3 nanowires [14,[19][20][21], BaTiO 3 nanoparticles [22], BiFeO 3 [23], KNbO 3 nanorods [24], KNbO 3 nanowires [25]), solvothermal (LiNbO 3 nanocrystals [26]), colloidal (Sb 2 S 3 nanowires [27]), sol-gel (PbTiO 3 nanotubes [28,29]), mechanochemically assisted (Bi 4 Ti 3 O 12 [30]), electrospinning (BiFeO 3 nanofibers [9], poly(vinylidene fluoride) nanofibers [31]), and sonochemical (SbSI nanowires [32][33][34][35]). More information about recent trends in fabrication techniques of 0D and 1D ferroelectric nanomaterials can be found elsewhere [2,36].…”