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Title Impact of Inter-Wall Distance on Physical Properties of Metal-Semiconducting Double Walled Carbon Nanotube Quantum Dot
Authors Bashir, Mohi Ud Din Bhat
Rayees, Ahmad Zargar
Shabir, Ahmad Bhat
Keywords quantum dot
binding energy
variational method
квантовая точка
энергия связи
вариационный метод
квантова точка
енергія зв'язку
варіаційний метод
Type Article
Date of Issue 2018
URI http://essuir.sumdu.edu.ua/handle/123456789/68413
Publisher Sumy State University
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Citation Bashir, Mohi Ud Din Bhat Impact of Inter-Wall Distance on Physical Properties of Metal-Semiconducting Double Walled Carbon Nanotube Quantum Dot [Текст] / M.U. Bashir, A.Z. Rayees, A.B. Shabir // Журнал нано- та електронної фізики. - 2018. - Т.10, №2. - 02044. - DOI: 10.21272/jnep.10(2).02044.
Abstract Here we report the effect of inter-wall distance of CNT on transmission probabilities of electrons and holes as well as their binding energies. The binding energies were calculated using the variational method within the effective mass approximation and confinement potential. The barrier transmission probabilities of electrons and holes were also calculated using varying potential barrier height and quantum mechanical tunnelling. The binding energy is found to be decreasing with inter-wall distance. We find the presence of outer wall causes a decrease in the transmission probability. For a given core radius, the transmission probability of hole increases linearly with increasing hole energy. CNT QDs of inter-wall distance 3 nm resembles to type II core-shell quantum dot (CSQD). The observed results were compared with the previous investigations. The inter-wall distance causes a decrease in the transmission probability.
Appears in Collections: Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

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