Phonon contribution to electrical resistance of acceptor-doped single-wall carbon nanotubes assembled into transparent films

Tsebro, V. I.; Tonkikh, A. A.; Rybkovskiy, Dmitry V.; Obraztsova, Ekaterina A.; Kauppinen, Esko I.; Obraztsova, E. D.

doi:10.1103/physrevb.94.245438

Cited by 22 publications

(85 citation statements)

References 54 publications

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“…[2,3] These phenomena are commonly explained by the downshifting of the Fermi level of nanotubes into the valence band. To describe this process more completely, photoluminescence (PL) spectroscopy should be applied, but commonly used filling technique deals with films or powders of nanotubes, that makes PL studying complicated due to the fast irradiative relaxation of electronic excitations in bundles.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Single‐Walled Carbon Nanotubes Doped in Acid Medium

Eremin

Obraztsova

2017

Physica Status Solidi (b)

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We report a detailed study of changes in optical properties of single-walled carbon nanotubes caused by doping in acid medium and their comparison with those induced by other doping techniques. In this work, a hydrochloric acid was added to the aqueous suspension of nanotubes wrapped with sodium cholate. Additionally to the shift and suppression of several modes in the Raman spectrum and the suppression of the first optical transition in the optical absorption spectrum, we have observed an appearance of a trion band in the photoluminescence spectrum with the energy about 0.2 eV less than the main photoluminescence band.

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Section: Introductionmentioning

confidence: 99%

Optical Properties of Single‐Walled Carbon Nanotubes Doped in Acid Medium

Eremin

Obraztsova

2017

Physica Status Solidi (b)

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“…The effect of nitric acid doping is considered in infinitely long NO 3 -doped semiconducting (10,0) and metallic (8 The geometries of the primitive unit cells of (10,0) and (8,8) CNTs are first optimized with the FHI-aims code. The initial positions of the carbon atoms are computed by using the TubeGen 3.4 nanotube generator [33], and all primitive unit cells including the lattice vectors are relaxed.…”

Section: Methodology and Systemsmentioning

confidence: 99%

“…[6,35]. The k-point grid used for finding the electronic structure in the transport calculations is 1 × 1 × 27 for individual metallic (8,8) CNTs. A sparser grid is used for the transport calculations of semiconducting CNTs, but the calculations are converged despite the different grid.…”

Section: Methodology and Systemsmentioning

confidence: 99%

“…The number of NO 3 molecules in the computational unit cell of a metallic (8,8) CNT is varied, and the atomic structure of each doped system is optimized separately. After the relaxation, the nitrogen atom of the NO 3 molecule resides, as in the case of the semiconducting (10,0) CNT, on top of a carbon atom, and the oxygen atoms are located near the centers of the carbon hexagons.…”

Section: B Metallic Cnts With No 3 Moleculesmentioning

confidence: 99%

“…Another example of improving the conductivity of CNT thin films is doping them with I chains or CuCl, as presented experimentally in Ref. [8]. Moreover, previous computational studies of CNT junctions with transition-metal linker atoms have shown enhanced junction conductances [9].…”

Section: Introductionmentioning

confidence: 99%

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Electronic Transport Properties of Carbon-Nanotube Networks: The Effect of Nitrate Doping on Intratube and Intertube Conductances

et al. 2018

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The conductivity of carbon-nanotube (CNT) networks can be improved markedly by doping with nitric acid. In the present work, CNTs and junctions of CNTs functionalized with NO 3 molecules are investigated to understand the microscopic mechanism of nitric acid doping. According to our density-functional-theory band-structure calculations, there is charge transfer from the CNT to adsorbed molecules indicating p-type doping. The average doping efficiency of the NO 3 molecules is higher if the NO 3 molecules form complexes with water molecules. In addition to electron transport along individual CNTs, we also study electron transport between different types (metallic, semiconducting) of CNTs. Reflecting the differences in the electronic structures of semiconducting and metallic CNTs, we find that in addition to turning semiconducting CNTs metallic, doping further increases electron transport most efficiently along semiconducting CNTs as well as through the junctions between them.

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Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

Liu,

Zhao,

Kang

et al. 2023

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Single‐walled carbon nanotubes (SWCNTs) that have a reproducible distribution of chiralities or single chirality are among the most competitive materials for realizing post‐silicon electronics. Molecular doping, with its non‐destructive and fine‐tunable characteristics, is emerging as the primary doping approach for the structure‐controlled SWCNTs, enabling their eventual use in various functional devices. This review provides an overview of important advances in the area of molecular doping of structure‐controlled SWCNTs and their applications. The first part introduces the underlying physical process of molecular doping, followed by a comprehensive survey of the commonly used dopants for SWCNTs to date. Then, it highlights how the convergence of molecular doping and structure‐sorting strategies leads to significantly improved functionality of SWCNT‐based field‐effect transistor arrays, transparent electrodes in optoelectronics, thermoelectrics, and many emerging devices. At last, several challenges and opportunities in this field are discussed, with the hope of shedding light on promoting the practical application of SWCNTs in future electronics.

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Phonon contribution to electrical resistance of acceptor-doped single-wall carbon nanotubes assembled into transparent films

Cited by 22 publications

References 54 publications

Optical Properties of Single‐Walled Carbon Nanotubes Doped in Acid Medium

Optical Properties of Single‐Walled Carbon Nanotubes Doped in Acid Medium

Electronic Transport Properties of Carbon-Nanotube Networks: The Effect of Nitrate Doping on Intratube and Intertube Conductances

Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

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