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This article is cited in 2 scientific papers (total in 2 papers)
Physical science of materials
Effect of functionalization on the conductivity and noise characteristics of arrays of multiwall carbon nanotubes
V. A. Sergeevab, E. S. Klimovb, I. V. Frolova a Ul'yanovsk Branch of Institute of Radioengineering and Electronics, Russian Academy of Sciences
b Ulyanovsk State Technical University
Abstract:
The electrophysical and noise characteristics of arrays of multiwall carbon nanotubes (MWCNTs) functionalized in various ways were studied. It is demonstrated that the as-prepared and annealed MWCNT arrays have semiconductor-type resistivities and temperature dependences of resistivity, while the arrays of annealed MWCNTs functionalized with acids have metallic properties. Low-frequency $1/f$ noise in the 0.2–20 kHz range was observed for all MWCNT arrays. Simple thermal annealing raised the noise level severalfold and annealing with acid treatment resulted in noise reduction and a change in the index of power in its current dependence. The normal amplitude distribution of noise spikes transformed to a lognormal one as the density of as-prepared MWCNT arrays increased. The duration distribution of these spikes became narrower at higher densities.
Received: 20.12.2017 Revised: 11.03.2019 Accepted: 11.03.2019
Citation:
V. A. Sergeev, E. S. Klimov, I. V. Frolov, “Effect of functionalization on the conductivity and noise characteristics of arrays of multiwall carbon nanotubes”, Zhurnal Tekhnicheskoi Fiziki, 89:8 (2019), 1223–1228; Tech. Phys., 64:8 (2019), 1155–1160
Linking options:
https://www.mathnet.ru/eng/jtf5540 https://www.mathnet.ru/eng/jtf/v89/i8/p1223
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