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EP0338934A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Luminescent glassy compositions, their preparation and their use

Assignee: Centre National de la Recherche Scientifique
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Filing: 1989-04-20
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Granted: —
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Expires: 2009-04-20
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Abstract

Abstract Translated from French Composition vitreuse luminescente de formule : Ingrédients Teneur (en mole %) MnO m Ce₂O₃ n Tb₂O₃ p Ln₂O₃ q Agent réducteur t Agent modificateur u Agent vitrificateur v dans laquelle Ln est Y, Sc, La, Gd, Dy, Yb et Lu ; l'agent modificateur est notamment un oxyde alcalin ou alcalino-terreux, l'agent vitrificateur est à base de B₂O₃, m = 0,1-10, n = 0,1-5, p = 0,1-5, q = 0-10, t = 0,5-3, u = 10-38, v = 55-75 ; sa préparation et son application comme substance luminescente émettant une lumière blanche. Luminescent glassy composition of formula: Ingredients Content (in mole%) MnO m Ce₂O₃ not Tb₂O₃ p Ln₂O₃ q Reducing agent t Modifying agent u Vitrifying agent v where Ln is Y, Sc, La, Gd, Dy, Yb and Lu; the modifying agent is in particular an alkaline or alkaline-earth oxide, the vitrifying agent is based on B₂O₃, m = 0.1-10, n = 0.1-5, p = 0.1-5, q = 0-10, t = 0.5-3, u = 10-38, v = 55-75; its preparation and application as a luminescent substance emitting white light.

Inventors

  • 👤 Gilles Louis Le Flem
  • 👤 Claude Robert Parent
  • 👤 Zhang Jin Lab. de Chimie du Solide du CNRS Chao

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 12:09
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/15; C03C3/04; C03C3/06; C03C4/00; C03C4/12; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7766; C09K11/7782; Y; Y02; Y02B; Y02B20/00

Claims Analysis

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References Cited (Backward Citations)

DE638983C Cited
FR2531064A1 Cited
EP0199409A1 Cited

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