Luminescence of divalent europium-doped calcium carbonate and oxalate

Wei-Min Li, T. Hänninen, Markku Leskelä (Corresponding Author), Juha Saari, Anneli Hase

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

Divalent europium-doped calcium carbonate and oxalate were synthesized by means of co-precipitation, solid state reactions, and thermal decomposition processes under strictly controlled experimental conditions. Preliminary studies of the synthesized phosphor materials showed that CaCO3:Eu2+ and CaC2O4:Eu2+ have similar spectra, e.g. they both have broad band excitations and emissions with peaks at 350 and 450 nm, respectively. Their luminescence properties are excellent to meet the requirement for an optical brightening agent (OBA) which is widely used in, for example, the paper industry. Furthermore, these materials can be made at ambient to 500°C which means a considerable lower cost compared with today’s commercial blue phosphors that need annealing temperatures above 1000°C. Blue luminescent CaCO3:Eu2+ and CaC2O4:Eu2+ are therefore attractive alternatives for today’s OBAs.
Original languageEnglish
Pages (from-to)236-238
Number of pages3
JournalJournal of Alloys and Compounds
Volume323-324
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed
Event4th International Conference on f-Elements - Madrid, Spain
Duration: 17 Sep 200021 Sep 2000

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Europium
Calcium Oxalate
Calcium Carbonate
Calcium carbonate
Phosphors
Luminescence
Coprecipitation
Solid state reactions
Pyrolysis
Annealing
Costs
Industry
Temperature

Cite this

Li, Wei-Min ; Hänninen, T. ; Leskelä, Markku ; Saari, Juha ; Hase, Anneli. / Luminescence of divalent europium-doped calcium carbonate and oxalate. In: Journal of Alloys and Compounds. 2001 ; Vol. 323-324. pp. 236-238.
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abstract = "Divalent europium-doped calcium carbonate and oxalate were synthesized by means of co-precipitation, solid state reactions, and thermal decomposition processes under strictly controlled experimental conditions. Preliminary studies of the synthesized phosphor materials showed that CaCO3:Eu2+ and CaC2O4:Eu2+ have similar spectra, e.g. they both have broad band excitations and emissions with peaks at 350 and 450 nm, respectively. Their luminescence properties are excellent to meet the requirement for an optical brightening agent (OBA) which is widely used in, for example, the paper industry. Furthermore, these materials can be made at ambient to 500°C which means a considerable lower cost compared with today’s commercial blue phosphors that need annealing temperatures above 1000°C. Blue luminescent CaCO3:Eu2+ and CaC2O4:Eu2+ are therefore attractive alternatives for today’s OBAs.",
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Luminescence of divalent europium-doped calcium carbonate and oxalate. / Li, Wei-Min; Hänninen, T.; Leskelä, Markku (Corresponding Author); Saari, Juha; Hase, Anneli.

In: Journal of Alloys and Compounds, Vol. 323-324, 2001, p. 236-238.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Luminescence of divalent europium-doped calcium carbonate and oxalate

AU - Li, Wei-Min

AU - Hänninen, T.

AU - Leskelä, Markku

AU - Saari, Juha

AU - Hase, Anneli

N1 - Project code: K9SU00040

PY - 2001

Y1 - 2001

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AB - Divalent europium-doped calcium carbonate and oxalate were synthesized by means of co-precipitation, solid state reactions, and thermal decomposition processes under strictly controlled experimental conditions. Preliminary studies of the synthesized phosphor materials showed that CaCO3:Eu2+ and CaC2O4:Eu2+ have similar spectra, e.g. they both have broad band excitations and emissions with peaks at 350 and 450 nm, respectively. Their luminescence properties are excellent to meet the requirement for an optical brightening agent (OBA) which is widely used in, for example, the paper industry. Furthermore, these materials can be made at ambient to 500°C which means a considerable lower cost compared with today’s commercial blue phosphors that need annealing temperatures above 1000°C. Blue luminescent CaCO3:Eu2+ and CaC2O4:Eu2+ are therefore attractive alternatives for today’s OBAs.

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DO - 10.1016/S0925-8388(01)01050-7

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

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