Photoluminescence of synthetic titanite-group pigments: A rare quenching effect

Lutz Nasdala*, Teodora Stoyanova Lyubenova, Michael Gaft, Manfred Wildner, Wilfredo Diegor, Christian Petautschnig, Dominik Talla, Christoph Lenz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Chromium-doped titanite and malayaite samples, which were synthesised to evaluate their performance as ceramic pigments, show remarkable photoluminescence behaviour. Emissions of centres related to traces of trivalent rare-earth elements (REE) are observed exclusively from chromium-free samples. Their Cr-doped analogues (containing the same REEs on the same concentration levels), in contrast, only show broad-band Cr3+ emission whereas all REE emissions are suppressed. This behaviour is assigned to quenching of REE emissions by chromium centres (i.e., REE3+→Cr3+ energy transfer).

Original languageEnglish
Pages (from-to)419-424
Number of pages6
JournalChemie der Erde - Geochemistry
Volume74
Issue number3
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Chromium
  • Photoluminescence
  • Quenching
  • Rare-earth elements
  • Titanite

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