Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/1334
Title: Multifunctional Al<inf>2</inf>O<inf>3</inf>:Eu<sup>2+</sup>/Sm<sup>2+,3+</sup> + Y<inf>2</inf>O<inf>3</inf>:Eu<sup>3+</sup> Coatings Created by the Plasma Electrolytic Oxidation
Authors: Ćirić, Aleksandar 
Stojadinović, Stevan 
Dramićanin, Miroslav D.
Keywords: luminescent coatings;luminescent QR codes;optical sensors;plasma electrolytic oxidation
Issue Date: 1-Jan-2023
Journal: Advanced Materials Technologies
Abstract: 
The industrial applications of luminescent coatings for temperature sensing and high-security QR codes have multiple inherent problems in their application (speed, cost, industrial feasibility) or properties (poor adhesion, chemical, thermal stability, or thermal contact). Luminescent coatings created by the electrochemical Plasma Electrolytic Oxidation (PEO) process have superior properties and can be grown directly within minutes, but are limited to the number of possible luminescent dopants. Having the unlimited possibility for doping on the PEO coatings would provide for superior coatings in all industrially appealing features. Herein, it is shown that adding any luminescent powder results in its partial dissociation and incorporation of its constituents, while it also gets incorporated as a whole. In this manner, alumina coatings are grown with various combinations and concentrations of divalent samarium and europium, and yttrium oxide with trivalent europium ions. These polycrystalline coatings whose microhardness is next to that of the diamond produce intense luminescence in the blue and red regions. Al2O3:Eu2+/Sm2+/3+ + Y2O3:Eu3+ coatings show an excellent temperature sensing performance from the cryogenic up to the high temperatures. Ultimately, the proof-of-concept of the luminescent QR code by the electrochemical process is realized creating a highly secure code with unprecedented environmental stability.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/1334
DOI: 10.1002/admt.202300607
Appears in Collections:Journal Article

Show full item record

SCOPUSTM   
Citations

4
checked on Nov 20, 2024

Page view(s)

29
checked on Nov 21, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.