Abstract
Many envisaged applications, such as nanoelectronics, photovoltaics, thermoelectric power generation, light-emission devices, energy storage and biomedicine, necessitate single-walled carbon nanotube (SWCNT) samples with specific uniform electronic properties. The precise investigation of the electronic properties of filled SWCNTs on a qualitative and quantitative level is conducted by optical absorption spectroscopy, Raman spectroscopy, photoemission spectroscopy and X-ray absorption spectroscopy. This review is dedicated to the description of the spectroscopic methods for the analysis of the electronic properties of filled SWCNTs. The basic principle and main features of SWCNTs as well as signatures of doping-induced modifications of the spectra of filled SWCNTs are discussed.
Highlights
Single-walled carbon nanotubes (SWCNTs) can be either metals or semiconductors, solely dependent on their atomic structure, known as chirality
The precise investigation of the electronic properties of filled single-walled carbon nanotube (SWCNT) on a qualitative and quantitative level is conducted by optical absorption spectroscopy, Raman spectroscopy, photoemission spectroscopy and X-ray absorption spectroscopy
Nanotubes shifted components and Valuable information provided by photoemission spectroscopy for the investigation broadening of carbon nanotubes made this method very popular
Summary
Single-walled carbon nanotubes (SWCNTs) can be either metals or semiconductors, solely dependent on their atomic structure, known as chirality Many envisaged applications, such as nanoelectronics [1], photovoltaics [2], thermoelectric power generation [3], light-emission [4], energy storage [5] and biomedicine [6], necessitate nanotube samples with specific uniform electronic properties. This review is dedicated to the description of the spectroscopic methods for the analysis of the electronic properties of filled SWCNTs. The review includes the discussion of basic principle and main features of the spectra of SWCNTs as well as signatures of doping-induced modifications of the spectra of filled SWCNTs. In Section 2.1 the results of the optical absorption investigations of filled SWCNTs are considered.
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