TY  - JOUR
AU  - Krieke, Guna
AU  - Antuzevics, Andris
AU  - Kalinko, Aleksandr
AU  - Kuzmin, Aleksejs
AU  - Murauskas, Tomas
AU  - Kareiva, Aivaras
AU  - Zarkov, Aleksej
TI  - Matrix-dependent high-contrast photochromism in Eu-doped M<sub>3</sub>MgSi<sub>2</sub>O<sub>8</sub> (M = Ca, Sr, Ba)
JO  - The journal of physical chemistry / C
VL  - 12
IS  - 41
SN  - 2050-7526
CY  - Washington, DC
PB  - Soc.
M1  - PUBDB-2024-06510
SP  - 16989-16998
PY  - 2024
AB  - The photochromic properties and charge transfer processes were studied in novel Eu-doped M<sub>3</sub>MgSi<sub>2</sub>O<sub>8</sub> (M = Ca, Sr, Ba) compounds. These materials exhibit vivid color changes upon irradiation with UV light, resulting in orange, reddish-pink, and green colors. The introduction of europium ions enhances photochromic efficiency and shifts excitation peaks to lower energy ranges. Analysis of diffuse reflectance and electron paramagnetic resonance spectra reveals the formation of both paramagnetic and non-paramagnetic defects, with the dominant signals attributed to electron centers, likely F<sup>+</sup>-type centers. The Eu<sup>2+</sup> → Eu<sup>3+</sup> charge transfer during irradiation indicates that Eu<sup>2+</sup> acts as a hole center. These findings contribute to a better understanding of the mechanisms underlying photochromism in these materials and highlight their potential for practical applications.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001317139200001
DO  - DOI:10.1039/D4TC03091E
UR  - https://bib-pubdb1.desy.de/record/616642
ER  -