Temperature dependent energy transfer to Eu3+ emission centres in K5Eu(MoO4)4 crystals

Dmitry Spassky, Andrey Vasil'Ev, Muhammad Usama Jamal, Vladimir A. Morozov, Bogdan I. Lazoryak, Boris S. Redkin, Kirill Chernenko, Vitali Nagirnyi

Research output: Contribution to journalArticlepeer-review


Luminescence properties of a palmierite-type K5Eu(MoO4)4 crystal were studied in a wide temperature range of 7-650 K. Eu3+ ions are shown to occupy at least three non-equivalent positions in the palmierite-type structure, forming emission centres with slightly different characteristics due to an incommensurate modulated disordering. The relative intensity of the Eu3+ emission bands originating from the 5D0 and 5D1 terms is shown to depend on excitation energy and the origin of the observed differences is discussed. It is shown that quenching temperature of the Eu3+ emission depends on excitation energy that is explained by energetical overlap of the 4f-4f Eu3+ transitions with the Urbach tail of the fundamental absorption region. Energy transfer processes to the Eu3+ emission centres were studied using the methods of time resolved spectroscopy.

Original languageEnglish
Pages (from-to)1106-1116
Number of pages11
Issue number8
Publication statusPublished - 2024

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics


Dive into the research topics of 'Temperature dependent energy transfer to Eu3+ emission centres in K5Eu(MoO4)4 crystals'. Together they form a unique fingerprint.

Cite this