Improving optical and morphological properties of Mn-doped ZnO via Ar ion sputtering followed by high-temperature UHV annealing Cover

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Improving optical and morphological properties of Mn-doped ZnO via Ar ion sputtering followed by high-temperature UHV annealing

Materials Science-Poland

Volume 41 (2023): Issue 2 (August 2023)

By: Elhachemi Zehar, Abdallah Ouerdane, Boualem Chetti and Ali Çoruh

Open Access

|Nov 2023

Figures & Tables

2D and 3D topographic AFM images accompanied by curves of line profiles corresponding to pure ZnO (a), untreated ZnMnO (b), and treated ZnMnO (c)

XRD spectra of undoped ZnO and treated ZnMnO With six pics (100), (002), (101), (102), (110) and (103)

Size-strain analysis (W-H plot) for ZnO and ZnMnO

XPS spectra of pure ZnO (i), initial ZnMnO (ii), ZnMnO post Ar ion sputtering (iii), and ZnMnO post Ar annealing at 800°C (iv). (a): full scan spectra. (b), (c), (d), and (e): narrow scan spectra corresponding to C 1s, doubled Zn 2p, O 1s, and doubled Mn 2p, respectively

Gaussian deconvolution of high-resolution XPS spectrum of: (a) doubled Mn 2p corresponding to treated ZnMnO(final state); and (b) O 1s corresponding to ZnMnO (untreated, annealed)

PL spectra of pure ZnO (i), untreated ZnMnO (ii), and treated ZnMnO (iii)

Gaussian fitting of PL spectra accompanied by schematic band diagram corresponding to pure ZnO (i), untreated ZnMnO (ii), and treated ZnMnO (iii)

Structural parameters of ZnO and treated ZnMnO: tabulated XRD spectroscopy results

Sample	Peak position (2θ °)	hkl	FWHM (2θ°)	d-spacing (Å)	Average grain size D (nm)		Cell parameters (Å)		c/a	Strain (ε)
Sample	Peak position (2θ °)	hkl	FWHM (2θ°)	d-spacing (Å)	Scherrer equation	W-H Plot	a = b	c		Scherrer equation	W-H Plot
ZnO(0%)	31.84	1 00	0.58	2.80	25.20	28.88	3.242	5.195	1.602	0.0014	0.00085
	34.50	002	0.33	2.60
	36.32	1 0 1	0.30	2.47
	47.65	1 02	0.33	1.90
	56.68	1 1 0	0.36	1.62
	63.02	1 03	0.83	1.47
ZnMnO(4%)	31.70	1 00	0.56	2.82	12.41	12.38	3.256	5.212	1.600	0.0025	0.00122
	34.38	002	0.67	2.60
	36.17	1 0 1	0.36	2.48
	47.56	1 02	0.29	1.91
	56.44	1 1 0	0.21	1.63
	62.87	1 03	0.30	1.47

Atomic percentages of Zn, O, and Mn elements corresponding to pure ZnO and treated ZnMnO_ (a) atomic ratio of the Mn atoms taking the Zn sites_ (b) stoichiometry factor of O to Zn and Mn

Sample	at(%)			Comments
Sample	Zn	O	Mn	(a): [Mn][Mn+Zn]×100${{[Mn]} \over {[Mn + Zn]}} \times 100$	(b): [O][Mn+Zn]${{[O]} \over {[Mn + Zn]}}$
ZnO	34.00	66.00	0.00	0.00	1.94
ZnMnO@800°C	22.30	74.04	3.65	14.07	2.85

The main statistical parameters calculated through the AFM images in Figure 1 using Gwyddion software

Sample	Maximum height (Z_max) (nm)	Median height (Z_med) (nm)	Mean roughness (Sa) (nm)	Number of grains (N)
ZnO	98.84	60.22	13.50	115
Untreated ZnMnO	198.0	106.46	27.05	152
Treated ZnMnO	288.84	132.52	43.03	126

DOI: https://doi.org/10.2478/msp-2023-0024 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331

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Language: English

Page range: 325 - 338

Submitted on: Mar 22, 2023

Accepted on: Sep 17, 2023

Published on: Nov 29, 2023

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

characterization,

Mn incorporation,

Related subjects:

Materials sciences,

Materials sciences, other,

Functional and smart materials,

Materials characterization and properties

© 2023 Elhachemi Zehar, Abdallah Ouerdane, Boualem Chetti, Ali Çoruh, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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