Device for generating UVC radiation
AssigneeKoninklijke Philips Electronics N.V.
InventorsThomas Justel, Jorg Meyer, Walter Mayr
Life of this patent
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Abstract
A device for generating ultraviolet radiation by an excimer discharge includes at least partly UV-transparent discharge vessel whose discharge space is filled with a gas filling. The device further includes electrodes for triggering and maintaining an excimer discharge in the discharge space, and a luminescent material that contains a phosphor comprising a host lattice of general formula (Y1-x-y-z,Lux,Scy,Az)PO4 wherein 0≦x<1 and 0<y≦1 and 0≦z<0.05, where A is an activator selected from the group of bismuth, praseodymium and neodymium.
Claims17
A device for generating ultraviolet radiation by an excimer discharge, the device comprising:
- at least partly UV-transparent discharge vessel having a discharge space filled with a gas filling,
- electrodes for triggering and maintaining an excimer discharge in the discharge space, and
- a coating that contains a phosphor comprising a host lattice of general formula (Y1-x-y-z,Lux,Scy,Az)PO4 wherein 0≦x<1 and 0<y≦1 and 0<z<0.05, and A is an activator selected from the group of bismuth, praseodymium and neodymium.
A phosphor comprising a host lattice of general formula (Y1-x-y-z, Lux,Scy,Az)PO4 wherein 0≦x<1 and 0<y≦1 and 0<z<0.05, and A is an activator selected from the group of bismuth, praseodymium and neodymium.
Dependencies are inferred from the claim text.