Luminescence of divalent europium-doped calcium carbonate and oxalate

Wei-Min Li; T. Hänninen; Markku Leskelä; Juha Saari; Anneli Hase

doi:10.1016/S0925-8388(01)01050-7

Luminescence of divalent europium-doped calcium carbonate and oxalate

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

VTT Technical Research Centre of Finland

University of Helsinki

Research output: Contribution to journal › Article › Scientific › peer-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 CaCO_3:Eu²⁺ and CaC₂O₄:Eu²⁺ are therefore attractive alternatives for today’s OBAs.

Original language	English
Pages (from-to)	236-238
Journal	Journal of Alloys and Compounds
Volume	323-324
DOIs	https://doi.org/10.1016/S0925-8388(01)01050-7
Publication status	Published - 2001
MoE publication type	A1 Journal article-refereed
Event	4th International Conference on f-Elements - Madrid, Spain Duration: 17 Sept 2000 → 21 Sept 2000

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title = "Luminescence of divalent europium-doped calcium carbonate and oxalate",

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{\textquoteright}s commercial blue phosphors that need annealing temperatures above 1000°C. Blue luminescent CaCO3:Eu2+ and CaC2O4:Eu2+ are therefore attractive alternatives for today{\textquoteright}s OBAs.",

author = "Wei-Min Li and T. H{\"a}nninen and Markku Leskel{\"a} and Juha Saari and Anneli Hase",

note = "Project code: K9SU00040; 4th International Conference on f-Elements, Puche S.I. ; Conference date: 17-09-2000 Through 21-09-2000",

year = "2001",

doi = "10.1016/S0925-8388(01)01050-7",

language = "English",

volume = "323-324",

pages = "236--238",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

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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

N2 - 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.

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.

U2 - 10.1016/S0925-8388(01)01050-7

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

M3 - Article

SN - 0925-8388

VL - 323-324

SP - 236

EP - 238

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - 4th International Conference on f-Elements

Y2 - 17 September 2000 through 21 September 2000

ER -

Luminescence of divalent europium-doped calcium carbonate and oxalate

Abstract

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