Photoluminescence of synthetic titanite-group pigments: A rare quenching effect |
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| Institution: | 1. Institut für Mineralogie und Kristallographie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria;2. Departament de Química Inorgànica i Orgànica, University Jaume I, 12071 Castellón de la Plana, Spain;3. OLDS Laser Distance Spectrometry Ltd., Petah-Tikva 49528, Israel;4. Department of Earth Sciences, Memorial University of Newfoundland, St. John''s, NL A1B 3X5, Canada;5. Institute of Geological Sciences, Masaryk University, 61137 Brno, Czech Republic;1. Institute of Applied Geoscience, Graz University of Technology, Rechbauerstrasse 12, Graz, Austria;2. Institute of Earth Sciences, University of Graz, Universitätsplatz 2, Graz, Austria;1. Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany;2. Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Carl-Zeiss-Promenade 10, D-07745 Jena, Germany;1. Urgences pédiatriques, hôpital Armand-Trousseau, université Pierre-et-Marie-Curie, 26, avenue du Dr-Arnold-Netter, 75012 Paris, France;2. Comité consultatif d’éthique local, service de néonatalogie, pôle de périnatalogie, hôpital Robert-Debré, Assistance publique–Hôpitaux de Paris, université Paris-7 – Denis-Diderot, 48, boulevard Sérurier, 75019 Paris, France;3. Service de spécialités pédiatriques, hôpital d’enfants de la Timone, Aix-Marseille université, 264, rue Saint-Pierre, 13005 Marseille, France;4. Service de pédiatrie générale, hôpital Necker–Enfants-Malades, 149, rue de Sèvres, 75015 Paris, France;5. Service de pédiatrie multidisciplinaire, hôpital d’enfants de la Timone, Aix-Marseille université, 264, rue Saint-Pierre, 13005 Marseille, France;1. EMNED, Chemistry Department, Faculty of Sciences, UCD University, P.O. Box 20, 24000 El Jadida, Morocco;2. ENSA, National School of Applied Sciences, UCD University, P.O. Box 1166, Plateau, 24002 El Jadida, Morocco;3. LPMC, Physics Department, Faculty of Sciences, UCD University, BP 20, 24000 El Jadida, Morocco;4. LMCO, Chemistry Department, Faculty of Sciences, UCD University, BP 20, 24000 El Jadida, Morocco;5. Hassan II Academy of Sciences and Technology, Rabat, Morocco;6. Departamento de Química Inorgánica I, Facultad de Ciencias Químicas, UCM, 28040 Madrid, Spain;7. LMCPA, UVHC, F-59600 Maubeuge, France;1. Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland;2. Faculty of Physics and Engineering, Moldova State University, 60 A. Mateevici str., MD-2009 Chisinau, Republic of Moldova |
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| 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). |
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| Keywords: | Photoluminescence Quenching Rare-earth elements Chromium Titanite |
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