Quantum-splitting fluoride-based phosphors, method of...

Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C313S467000, C313S468000, C313S486000, C313S487000

Reexamination Certificate

active

11032910

ABSTRACT:
A quantum-splitting fluoride-based phosphor comprises gadolinium, at least a first alkali metal, and a rare-earth metal activator. The phosphor is made in a solid-state method without using HF gas. The phosphor can be used alone or in conjunction with other phosphors in light sources and displays wherein it can be excited by VUV radiation, and increases the efficiency of these devices.

REFERENCES:
patent: 6600260 (2003-07-01), Feldmann et al.
patent: 2002/0185961 (2002-12-01), Oskam et al.
patent: 2002/0190645 (2002-12-01), Oskam et al.
patent: 07-315992 (1995-12-01), None
patent: 11-43669 (1999-02-01), None
patent: WO 02/097859 (2002-12-01), None
Karbowiak et al, “Structural and Iuminescent properties of nanostructured KGdF4:Eu3+ synthesised by coprecipitation method”, Jor alloy and compound, vol. 380 (1-2), pp. 321-326, Apr. 8, 2004.
You et al, “VUV excited luminescence of MGdF4:Eu3+ (M=Na,K,NH4)”, Jour Lumine, vol. 110 (3), pp. 95-99, Jun. 17, 2004.
Wegh, R. T., et al., “Visible quantum cutting in Eu3+ -doped gadolinium florides via downconversion”, Journal of Luminescence, 1999, pp. 93-104, vol. 82.
Kondo, H., et al., “Dynamical behavior of quantum cutting in alkali gadolinium fluoride phosphors”, Journal of Luminescence, 2004, pp. 59-63, vol. 108.
Khaidukov, N. M., et al., “Luminescence spectroscopy from the vacuum ultra-violet to the visible for Er3+ and Tm3+ in complex fluoride cyrstals”, Optical Materials, 2002, pp. 365-376, vol. 19.
Wegh, R. T., et al., “Visible quantum cutting via downconversion in LiGdF4: Er3+, Tb3+ upon Er3+ 4f11→4f10 5d excitation”, Journal of Luminescence, 2000, pp. 111-122, vol. 90.
Oskam, K.D., et al., “Downconversion: a new route to visible quantum cutting”, Journal of Alloys and Compounds, 2000, pp. 421-425, vol. 300-301.
Wegh, R. T., et al., “Quantum cutting through downconversion in rare-earth compounds”, Journal of Luminescence, 2000, pp. 1017-1019, vol. 87-89.
Feldman, C., et al., “Quantum efficiency of down-conversion phosphor LiGdF4: Eu”, Journal of Luminescence, 2001, pp. 245-254, vol. 92.
Liu, Bo, et al., “visible quantum cutting in BaF2; Gd, Eu via downconversion”, Journal of Luminescence, 2003, pp. 155-159, vol. 101.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Quantum-splitting fluoride-based phosphors, method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quantum-splitting fluoride-based phosphors, method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum-splitting fluoride-based phosphors, method of... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3753176

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.