Investigation on the Structural and Optical Properties of NiO Nanoflakes. Chemical Bath Deposition of Ni(OH)2 Thin Films
DOI:
https://doi.org/10.15407/ujpe62.11.0970Keywords:
annealing temperature, nanoflakes, thin film, chemical bath deposition, nickel oxideAbstract
Porous nickel oxide (NiO) nanoflakes are grown by the chemical bath deposition. The thin films are produced on an ITO/glass substrate and annealed at a variable temperature in a furnace. The structural and optical properties and the surface morphology of the thin films are studied and analyzed. FESEM results display the presence of nanoflakes with the structure of NiO/Ni(OH)2 in thin films that appear to increase in size with the annealing temperature. The sample grown at 300 ∘C is observed to have the highest surface area dimension. The EDX result reveals that the atomic ratio and weight of the treated sample has a non-stoichiometric value, which results in the p-type behavior of the NiO thin film. The result obtained by AFM indicates the highest roughness value (47.9 nm) for a sample grown at 300 ∘C. The analysis on XRD shows that the NiO nanoflakes possess a cubic structure with the orientation peaks of (111), (200), and (220). This appears with a stronger intensity at 300 ∘C. Likewise, XRD result approves the absence of the Ni(OH)2 peak at the annealing. For the optical band gap, the UV-Vis measurements give a lower value of 3.80 eV for 300 ∘C due to the highest crystallinity. The optimum temperature to synthesize high-quality NiO nanoflakes is 300 ∘C, which can be an important factor for good sensing devices.
Downloads
Published
How to Cite
Issue
Section
License
Copyright Agreement
License to Publish the Paper
Kyiv, Ukraine
The corresponding author and the co-authors (hereon referred to as the Author(s)) of the paper being submitted to the Ukrainian Journal of Physics (hereon referred to as the Paper) from one side and the Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, represented by its Director (hereon referred to as the Publisher) from the other side have come to the following Agreement:
1. Subject of the Agreement.
The Author(s) grant(s) the Publisher the free non-exclusive right to use the Paper (of scientific, technical, or any other content) according to the terms and conditions defined by this Agreement.
2. The ways of using the Paper.
2.1. The Author(s) grant(s) the Publisher the right to use the Paper as follows.
2.1.1. To publish the Paper in the Ukrainian Journal of Physics (hereon referred to as the Journal) in original language and translated into English (the copy of the Paper approved by the Author(s) and the Publisher and accepted for publication is a constitutive part of this License Agreement).
2.1.2. To edit, adapt, and correct the Paper by approval of the Author(s).
2.1.3. To translate the Paper in the case when the Paper is written in a language different from that adopted in the Journal.
2.2. If the Author(s) has(ve) an intent to use the Paper in any other way, e.g., to publish the translated version of the Paper (except for the case defined by Section 2.1.3 of this Agreement), to post the full Paper or any its part on the web, to publish the Paper in any other editions, to include the Paper or any its part in other collections, anthologies, encyclopaedias, etc., the Author(s) should get a written permission from the Publisher.
3. License territory.
The Author(s) grant(s) the Publisher the right to use the Paper as regulated by sections 2.1.1–2.1.3 of this Agreement on the territory of Ukraine and to distribute the Paper as indispensable part of the Journal on the territory of Ukraine and other countries by means of subscription, sales, and free transfer to a third party.
4. Duration.
4.1. This Agreement is valid starting from the date of signature and acts for the entire period of the existence of the Journal.
5. Loyalty.
5.1. The Author(s) warrant(s) the Publisher that:
– he/she is the true author (co-author) of the Paper;
– copyright on the Paper was not transferred to any other party;
– the Paper has never been published before and will not be published in any other media before it is published by the Publisher (see also section 2.2);
– the Author(s) do(es) not violate any intellectual property right of other parties. If the Paper includes some materials of other parties, except for citations whose length is regulated by the scientific, informational, or critical character of the Paper, the use of such materials is in compliance with the regulations of the international law and the law of Ukraine.
6. Requisites and signatures of the Parties.
Publisher: Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine.
Address: Ukraine, Kyiv, Metrolohichna Str. 14-b.
Author: Electronic signature on behalf and with endorsement of all co-authors.
.png){kind=small}
