Influence of duration time of CVD process on emissive properties of carbon nanotubes films

Izabela Stępinska; Mirosław Kozłowski; Joanna Radomska; Halina Wronka; Elżbieta Czerwosz; Kamil Sobczak

doi:10.1515/msp-2015-0023

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Influence of duration time of CVD process on emissive properties of carbon nanotubes films

Materials Science-Poland

Volume 33 (2015): Issue 1 (March 2015)

By: Izabela Stępinska, Mirosław Kozłowski, Joanna Radomska, Halina Wronka, Elżbieta Czerwosz and Kamil Sobczak

Open Access

|Mar 2015

Abstract

In this paper various types of films made of carbon nanotubes (CNTs) are presented. These films were prepared on different substrates (Al₂O₃, Si n-type) by the two-step method. The two-step method consists of physical vapor deposition step, followed by chemical vapor deposition step (PVD/CVD). Parameters of PVD process were the same for all initial films, while the duration times of the second step - the CVD process, were different (15, 30 min.). Prepared films were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and field emission (FE) measurements. The I-E and F-N characteristics of electron emission were discussed in terms of various forms of CNT films. The value of threshold electric field ranged from few V/μm (for CNT dispersed rarely on the surface of the film deposited on Si) up to ~20 V/μm (for Al₂O₃ substrate).

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Articles in this issue

DOI: https://doi.org/10.1515/msp-2015-0023 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331

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Language: English

Page range: 36 - 46

Submitted on: Mar 11, 2014

Accepted on: Nov 19, 2014

Published on: Mar 13, 2015

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

carbon nanotubes film,

field emission,

SEM,

TEM

Related subjects:

Materials sciences,

Materials sciences, other,

Nanomaterials,

Functional and smart materials,

Materials characterization and properties

© 2015 Izabela Stępinska, Mirosław Kozłowski, Joanna Radomska, Halina Wronka, Elżbieta Czerwosz, Kamil Sobczak, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 33 (2015): Issue 1 (March 2015)