TY - JOUR
T1 - Photoluminescence of synthetic titanite-group pigments
T2 - A rare quenching effect
AU - Nasdala, Lutz
AU - Stoyanova Lyubenova, Teodora
AU - Gaft, Michael
AU - Wildner, Manfred
AU - Diegor, Wilfredo
AU - Petautschnig, Christian
AU - Talla, Dominik
AU - Lenz, Christoph
PY - 2014
Y1 - 2014
N2 - 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).
AB - 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).
KW - Chromium
KW - Photoluminescence
KW - Quenching
KW - Rare-earth elements
KW - Titanite
UR - http://www.scopus.com/inward/record.url?scp=84907595619&partnerID=8YFLogxK
U2 - 10.1016/j.chemer.2014.04.004
DO - 10.1016/j.chemer.2014.04.004
M3 - Article
AN - SCOPUS:84907595619
SN - 0009-2819
VL - 74
SP - 419
EP - 424
JO - Chemie der Erde - Geochemistry
JF - Chemie der Erde - Geochemistry
IS - 3
ER -