Journal Article

PUBDB-2024-06510

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Matrix-dependent high-contrast photochromism in Eu-doped M$_3$MgSi$_2$O$_8$ (M = Ca, Sr, Ba)

Krieke, G. (Corresponding author)Extern* ; Antuzevics, A. ; Kalinko, A. ; Kuzmin, A.Extern* ; Murauskas, T. ; Kareiva, A. ; Zarkov, A.

2024
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1039/D4TC03091E  doi:10.3204/PUBDB-2024-06510

Abstract: The photochromic properties and charge transfer processes were studied in novel Eu-doped M$_3$MgSi$_2$O$_8$ (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$^+$-type centers. The Eu$^{2+}$ → Eu$^{3+}$ charge transfer during irradiation indicates that Eu$^{2+}$ 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.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20230821 EC (I-20230821-EC) (I-20230821-EC)
3. CAMART2 - Centre of Advanced Materials Research and Technology Transfer CAMART² (739508) (739508)

Experiment(s):

1. PETRA Beamline P64 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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