Abstract
The internal channels of semiconducting single-walled carbon nanotubes (SWCNTs) were filled with silver chloride. The filling was confirmed by high-resolution scanning transmission electron microscopy. The filling-induced modifications of Raman modes of SWCNTs were analyzed. The fitting of the radial breathing mode (RBM) and G-bands of Raman spectra of the pristine and filled nanotubes with individual components allowed analyzing in detail the influence of encapsulated silver chloride on the electronic properties of different diameter nanotubes. The analysis of the RBM-band allowed revealing the changes in resonance excitation conditions of SWCNTs upon filling. The analysis of the G-band allowed concluding about p-doping of nanotubes by incorporated silver chloride accompanied by charge transfer from nanotubes to the inserted salt.
Highlights
IntroductionThe unique physical, chemical, and mechanical properties of single-walled carbon nanotubes (SWCNTs) made them an object of investigation in fundamental and applied science
The unique physical, chemical, and mechanical properties of single-walled carbon nanotubes (SWCNTs) made them an object of investigation in fundamental and applied science.The properties of SWCNTs depend solely on their atomic structure [1]
The fitting of the radial breathing mode (RBM) and G-bands of Raman spectra of the pristine and filled nanotubes with individual components allowed analyzing in detail the influence of encapsulated silver chloride on the electronic properties of different diameter nanotubes
Summary
The unique physical, chemical, and mechanical properties of single-walled carbon nanotubes (SWCNTs) made them an object of investigation in fundamental and applied science. The properties of SWCNTs depend solely on their atomic structure [1]. As-synthesized nanotubes represent a mixture of SWCNTs with metallic and semiconducting conductivity type, which limits their applications [2]. To control the properties of synthesized SWCNTs, two methods were established: (i) separation of nanotubes and (ii) chemical functionalization of SWCNTs [3]. SWCNTs with defined conductivity type, diameter, and even chiral angle [4]. Chemical functionalization methods allow modification of the electronic properties of SWCNTs
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