Patent · US Active

Dielectric barrier discharge lamp comprising an UV-B phosphor

US7855497B2 · kind B2 · utility

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2Claims

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Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Thomas Juestel · Aachen, DE
Petra Huppertz · Roetgen, DE
Detlef Uwe Wiechert · Alsdorf, DE
Walter Mayr · Alsdorf, DE
Heinrich von Busch · Aachen, DE

Key dates

Filing date	Apr 19, 2005
Grant date	Dec 21, 2010
Priority date	—
Expiry date	Apr 18, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01J65/046
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A dielectric barrier Xe discharge lamp include discharge vessel with a gas filling containing Xe or a Xe/Ne mixture and a luminescent layer of a UV-B phosphor emitting in the UV-B range 280 to 320 nm. The luminescent layer includes a Gd3+ activated phosphor according to at least one the formulas of (Y1-x-yGdxSy)Al3(BO3)4, (La1-x-yGdxSy)Al3(BO3)4, (La1-x-yGdxSy)B3O6, (Y1-x-y-zGdxSyLuz)PO4, (Y1-x-y-zGdxSyLuz)BO3, (Y1-x-y-zGdxSyLuz)3Al5O12, Me(Y1-x-yGdxSy)F4 (Me=Li, Na, K; S═Bi, Nd, Pr; 0.0<x,z≦1.0; 0.0<y≦0.1) or a mixture thereof. The luminescent layer may be sensitized by Bi3+, Pr3+ or Nd3+.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.