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Abstract
CuSbS2 nanotubes (NTs) were prepared via a hot-injection method using an anodic aluminum oxide (AAO) template, and a mixture of oleylamine (OLA) and dichlorobenzene (DB) as solvent. Structural characterization of the powder indicated formation of high purity well-aligned CuSbS2 NTs with an average diameter of 200 nm and an average wall thickness of 40 nm. Optical and electrochemical characterizations indicated that the obtained CuSbS2 NTs exhibit p-type conductivity with a suitable band gap (1.53 eV), as well as valence band (VB), and conduction band (CB) positions, comparable to conventional materials utilized in solar cell.
Highlights
Copper-based chalcogenide ternary semiconductors have received interest in various applications such as light emitting diodes [1], hydrogen evolution [2], and solar cells [3]
For the preparation of CuSbS2 NT arrays, a 200 nm anodic aluminum oxide (AAO) template, 44.54 mg CuCl, 102.65 mg SbCl3, and a mixture of 3 ml OLA and 4 ml DB were placed in a 50 ml three-neck flask
SEM images in Fig. 2a-c show the AAO template containing CuSbS2 nanotubes and Fig. 2d-f show extracted nanotubes
Summary
Copper-based chalcogenide ternary semiconductors have received interest in various applications such as light emitting diodes [1], hydrogen evolution [2], and solar cells [3]. One-dimensional nanostructures such as nanotubes (NTs) of several materials have attracted great interest due to their distinctive properties in optoelectronic device applications [12], this morphology has not yet been studied for CuSbS2. Nanostructures are formed in a control lable way within the ordered pore arrays of the template [13]. These templates are thermally stable and can be used in high tempera ture reactions like hot-injection method. Addition of dichlorobenzene (DB), which has a lower boiling-point than the commonly used oleylamine (OLA), is proposed in this paper as a compound solvent mixture This solvent mixture provided the required agitation thereby avoiding me chanical stirring and protecting the fragile template
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