Preparing and testing the reliability of long-afterglow SrAl₂O₄:Eu²⁺, Dy³⁺ phosphor flexible films for temperature sensing

Abstract

Owing to its stability and environment-friendly properties, the SrAl2O4:Eu2+, Dy3+ (SAOED) phosphor has attracted major scientific interest.

Green Afterglow of Undoped SrAl2O4

“…Details on the density functional calculations were available elsewhere [15,16,24,25]. [3,4,6,10,11]. Hence, according to the data registered in JCPDS card number 34-0379, these peaks can be attributed to the X-ray reflections from crystallographic planes (001), (120), (-211), (220), (211), and (013) of monoclinic SrAl 2 O 4 , respectively.…”

“…Since the report of green afterglow of Eu 2+ and Dy 3+ codoped SrAl 2 O 4 in 1996, the afterglow properties of Eu 2+ and an auxiliary trivalent rare-earth ion (Re 3+ ) codoped SrAl 2 O 4 have been intensively investigated due to the advantages of long afterglow time [1][2][3][4][5][6]. After intensive studies over the past 25 years, it is widely accepted that Eu 2+ is the luminescent center of the afterglow for Eu 2+ and Re 3+ codoped SrAl 2 O 4 phosphors [1,2,[7][8][9].…”

Persistent luminescence of transparent ZnGa2O4:Cr3+ thin films from colloidal nanoparticles of tunable size

“…To overcome these drawbacks, films based on persistent phosphors (mainly green emitting SrAl 2 O 4 :Eu 2+ ,Dy 3+ ) have been also reported. 11,12,13,14,15 Chromium doped zinc gallate (ZnGa 2 O 4 :Cr) is another persistent phosphor with emission located in the red to near infrared (NIR) region. Zinc gallate shows cubic spinel structure.…”

Water-Resistant Mechanoluminescent Electrospun Fabrics with Protected Sensitivity in Wet Condition via Plasma-Enhanced Chemical Vapor Deposition Process

“…Then, the Sr 2+ reacts with CO 2 in the air to create the final product, SrCO 3 , which is a carbonate salt of strontium. The mechanism is the direct indication of the instability of SAOED at a humidity condition [54].…”