Perspective on Transient THz Spectroscopy Characterisation of Carbon Nanotubes Volume 5 - Issue 2

Maria G Burdanova^1,2,3* and Alexey P Tsapenko⁴

• ¹Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology (State University), Russian Federation, Russia
• ²Department of Physics, Moscow Region State University, Russian Federation, Russia
• ³Department of Physics, University of Warwick, United Kingdom
• ⁴Department of Applied Physics, Aalto University, Finland

Received:June 6, 2021   Published:June 14, 2021

*Corresponding author:Maria G Burdanova, Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology (State University), Russian Federation, Russia

DOI: 10.32474/AOICS.2021.05.000210

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Abstract

Transient terahertz (THz) spectroscopy is a powerful non-contact, non-destructive technique for analysis of the photoinduced electronic properties of carbon nanotubes (CNTs). This technique allows measuring the photoinduced changes of the frequencydependent conductivity (photoconductivity) with a picosecond timescale. Thus, it makes this technique suitable for ultrafast processes occuring in the nanotubes. Many important CNT parameters such as mobility, scattering rate, carrier concentration and a the lifetime can be measured accurately using transient THz spectroscopy. The strong many-body interactions inherent in CNT, result in bright, dark excitons, trions coexistence with free charges and can be revealed using this technique. Therefore, in this perspective, we discuss the recent THz photoconductivity studies of CNTs.

Keywords:Nanotubes; transient terahertz spectroscopy; pump-probe; photoconductivity

Abstract| Introduction| Materials and Methods| Results| Results and Discussion: NOx Production| Conclusions and Further Developments| Highlights| Funding| Conflicts of Interest| References|