公开(公告)号：DE50210402D1

公开(公告)日：2007-08-16

申请号：DE50210402

申请日：2002-04-25

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： FELDMANN CLAUS DR ,  MEIJERINK ANDRIES PROF DR ,  OSKAM KOERT ,  PEIJZEL PAUL

IPC: C09K11/77 ,  C09K11/85 ,  H01J61/44 ,  H01J65/00

Abstract: Gas discharge lamp comprises a discharge vessel filled with a gas emitting VUV radiation; a luminescent coating containing down-conversion luminescent material; and devices for igniting and maintaining a gas discharge. The down-conversion luminescent material contains a pair of activators made from a first lanthanide ion and a second lanthanide ion, and a coactivator made form a third lanthanide ion in a lattice. Preferred Features: The first lanthanide ion is gadolinium (III) ion and the second lanthanum ion is holmium (III) ion. The third lanthanum ion is terbium (III) ion, dysprosium (III) ion, europium (II) ion, samarium (II) ion or manganese (II) ion. The lattice is made from a fluoride, preferably a fluoride of the composition M F3 where M = Al, In, Ga, Sc, Y, La or lanthanide.

公开(公告)号：DE60229743D1

公开(公告)日：2008-12-18

申请号：DE60229743

申请日：2002-05-30

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： OSKAM KOERT ,  MEIJERINK ANDRIES ,  WEGH RENE T ,  FELDMANN CLAUS ,  WIECHERT DETLEF U ,  JUESTEL THOMAS ,  RONDA CORNELIS R

IPC: C09K11/85 ,  H01J61/44 ,  C09K11/61 ,  C09K11/77

Abstract: A gas discharge lamp has a gas discharge vessel filled with a gas filling suitable for a gas discharge which emits VUV radiation, with a phosphor coating containing a downconversion phosphor. The downconversion phosphor has, in a host lattice, a pair of activators of a first lanthanoid ion and a second lanthanoid ion; a sensitizer selected from the group formed by the thallium(I) ion, lead(II) ion and bismuth(III) ion; and samarium(II) ion co-activator.

公开(公告)号：DE50210535D1

公开(公告)日：2007-09-06

申请号：DE50210535

申请日：2002-04-23

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： OSKAM KOERT ,  MEIJERINK ANDRIES PROF DR

IPC: C09K11/85 ,  H01J61/44 ,  C09K11/77 ,  H01J11/00 ,  H01J65/00

Abstract: Gas discharge lamp comprises a gas discharge vessel filled with a gas filling suitable for a gas discharge emitting visible ultraviolet (VUV) radiation; a luminescent coating containing a down-conversion luminescent material; and devices for igniting and maintaining a gas discharge. The down-conversion luminescent material contains a pair of activators selected from cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium ions in a host lattice. An Independent claim is also included for the down-conversion luminescent material. Preferred Features: The host lattice is a fluoride. The down-conversion luminescent material contains a co-activator in an amount of 0.5 mol.%.