Patent Number: 6,251,304

Title: Luminescent material

Abstract: A luminescent material includes erbium, gadolinium and an activator chosen from the rare earth elements and/or the transition metals. Upon excitation with radiation having a short enough wavelength, the luminescent material acts as a quantum cutter and has a quantum efficiency of more than 100%.

Inventors: Wegh; Rene T. (Zeist, NL), Meijerink; Andries (Soesterberg, NL)

Assignee: U.S. Philips Corporation

International Classification: C09K 11/77 (20060101); H01J 61/38 (20060101); H01J 61/44 (20060101); H01J 29/20 (20060101); C09K 011/77 (); C09K 011/85 (); H01J 029/20 ()

Expiration Date: 06/26/2018