The Influence of Laser Radiation Power on Raman Spectra of Multi-Walled Carbon Nanotubes

被引：0

作者：

Vorobyeva, E. A. ^{[1
,2
]}

Bukunov, K. A. ^{[1
]}

Evseev, A. P. ^{[1
]}

Minnebaev, D. K. ^{[1
]}

Chechenin, N. G. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[2] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia

来源：

MOSCOW UNIVERSITY PHYSICS BULLETIN | 2022年 / 77卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

multi-walled carbon nanotubes; pyrolytic vapor deposition; Raman scattering; inducing laser radiation power; IRRADIATION; CONDUCTIVITY; SPECTROSCOPY; DIAMOND; MODES;

D O I：

10.3103/S0027134922030109

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Raman spectrometry is one of the most widely used techniques for the analysis of oriented multi-walled carbon nanotubes (MWCNTs), while the analyzing laser beam is also a source of local heating. The behavior of characteristic peaks in the spectrum of MWCNTs (D, G, 2D(G '), and D ') is monitored by increasing the laser radiation power and then decreasing it to the initial values. An additional peak was introduced to compensate for the difference between the experimental spectrumand the sumof the decomposition components (in the region of 1500 cm(-1)), the character of which differs from the behavior of the known peaks, which indicates the different nature of their origin. It is noted that an increase in laser power leads to a decrease in the number of defects in carbon nanotubes.

引用

页码：504 / 510

页数：7

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