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The Bologna Stone: ...
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Lastusaari, Mika
(author)
The Bologna Stone: history's first persistent luminescent material
- Article/chapterEnglish2012
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Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:a7e3b253-9f54-4fd1-a94e-30a6ce89aca0
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https://lup.lub.lu.se/record/3189849URI
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https://doi.org/10.1127/0935-1221/2012/0024-2224DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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In 1603, the Italian shoemaker Vincenzo Cascariolo found that a stone (baryte) from the outskirts of Bologna emitted light in the dark without any external excitation source. However, the calcination of the baryte was needed prior to this observation. The stone later named as the Bologna Stone was among the first luminescent materials and the first documented material to show persistent luminescence. The mechanism behind the persistent emission in this material has remained a mystery ever since. In this work, the Bologna Stone (BaS) was prepared from the natural baryte (Bologna, Italy) used by Cascariolo. Its properties, e. g. impurities (dopants) and their valences, luminescence, persistent luminescence and trap structure, were compared to those of the pure BaS materials doped with different (transition) metals (Cu, Ag, Pb) known to yield strong luminescence. The work was carried out by using different methods (XANES, TL, VUV-UV-vis luminescence, TGA-DTA, XPD). A plausible mechanism for the persistent luminescence from the Bologna Stone with Cu+ as the emitting species was constructed based on the results obtained. The puzzle of the Bologna Stone can thus be considered as resolved after some 400 years of studies.
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Laamanen, Taneli
(author)
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Malkamaki, Marja
(author)
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Eskola, Kari O.
(author)
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Kotlov, Aleksei
(author)
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Carlson, StefanLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)inor-sca
(author)
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Welter, Edmund
(author)
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Brito, Hermi F.
(author)
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Bettinelli, Marco
(author)
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Jungner, Hogne
(author)
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Holsa, Jorma
(author)
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Lunds universitetMAX IV-laboratoriet
(creator_code:org_t)
Related titles
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In:European Journal of Mineralogy: Schweizerbart24:5, s. 885-8901617-40110935-1221
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Lastusaari, Mika
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Laamanen, Taneli
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Malkamaki, Marja
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Eskola, Kari O.
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Kotlov, Aleksei
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Carlson, Stefan
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Welter, Edmund
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Brito, Hermi F.
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Bettinelli, Marc ...
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Jungner, Hogne
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Holsa, Jorma
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Lund University