Abstract: The photoluminescent properties of dopant-free t-ZrO2 nanoparticles, both in their as-synthesized form and after dehydroxylation, were studied in this work. Nanoparticles were prepared via the laser vaporization synthesis in flow argon. In combination with the study of the morphology, structure, thermal, and optical properties of nanoparticles, this made it possible to establish individual contributions of defects related to oxygen, impurities, and OH-groups. At selective excitation of dopant-free t-ZrO2 nanoparticles, the intrinsic and extrinsic defects were detected. The luminescence spectra indicate that defects are associated with oxygen vacancies and Ti3+ impurities. For the first time, surface OH-groups were identified in t-ZrO2 nanoparticles. The intense luminescence of OH-groups in ZrO2 nanoparticles manifests itself in the blue-green region of the spectrum with a maximum at 416–438 nm and is most effectively excited in the band with a maximum at 340 nm. This means that when developing luminescent ZrO2-based nanomaterials for optical devices, it is necessary to control the contribution of defects and impurities, as well as the contribution of OH-groups.

Cite: Kostyukov A.I. , Nashivochnikov A.A. , Rakhmanova M.I. , Panchenko V.N. , Pochtar’ A.A. , Cherepanova S.V. , Snytnikov V.N.
Photoluminescence of Tetragonal ZrO2 Nanoparticles: Contribution from OH-Groups, Oxygen Vacancies, and Impurities
Optical Materials. 2025. V.159. 116648 :1-10. DOI: 10.1016/j.optmat.2025.116648 WOS Scopus AN OpenAlex

Dates:

Submitted:	Dec 6, 2024
Accepted:	Jan 3, 2025
Published online:	Jan 3, 2025
Published print:	Feb 1, 2025

Identifiers:

Web of science:	WOS:001407166200001
Scopus:	2-s2.0-85214030105
Chemical Abstracts:	2025:168586
OpenAlex:	W4406062815

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