Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Influence of Ho3+ doping on the structural and optical characteristics of ZnO–ZrO2 nanocomposites synthesized by the solution combustion method

Not Accessible

Your library or personal account may give you access

Abstract

The ${\rm ZnO} {-} {{\rm ZrO}_2}$ nanocomposites were prepared using varying concentrations of ${{\rm Ho}^{3 +}}$ ions through the solution combustion method. Zirconium butoxide and zinc nitrate were used as the precursor solutions with citric acid as a fuel. The synthesis was done at a low temperature of 80°C and then the samples calcined at 600°C for 2 h, before characterization. Rietveld refinement revealed that the nanocomposite consisted of wurtzite zinc oxide, mixed with cubic and tetragonal zirconia phases. Scanning electron microscopy images show dispersed small polygonal crystals within a spongy matrix for lower ${{\rm Ho}^{3 +}}$ concentrations, while samples with higher dopant ratios featured larger crystals mixed with rods. The UV spectra had absorption edges from 400 nm with a dopant-dependent energy band gap ranging between 2.78 and 3.04 eV. The nanocomposites exhibited an initial violet emission that varied through blue into the green region, depending on the ${{\rm Ho}^{3 +}}$ doping concentration. Dipole–dipole interaction was found to be responsible for the luminescence quenching within the nanocomposite material.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Structural and optical characteristics of dysprosium-doped zinc zirconate nanocomposites

Michael K. Musembi, Francis B. Dejene, and Iorkyaa Ahemen
OSA Continuum 3(9) 2332-2346 (2020)

Structural elucidation and optical properties of LiZrO2–LiBaZrO3 nanocomposite doped with Mn2+ ions

V. M. Igba, I. Ahemen, A. N. Amah, F. B. Dejene, R. Sha’Ato, A. Reyes-Rojas, J. A. Duarte-Moller, and J. R. Parra-Michel
Opt. Mater. Express 10(11) 2877-2895 (2020)

Ho3+-doped ZnO nano phosphor for low-threshold sharp red light emission at elevated temperatures

K. Fabitha and M. S. Ramachandra Rao
J. Opt. Soc. Am. B 34(12) 2485-2492 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved