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White light can be made different ways - by mixing reds, greens, andblues, by using an ultraviolet LED to stimulate a white phosphor (the samestuff that's inside a fluorescent bulb), or by using a blue-emitting diode thatexcites a yellow-emitting phosphor embedded in the epoxy dome. The combinationof blue and yellow makes a white-emitting LED. Combine a white phosphor LEDwith a few amber ones, and you can create a range of different whites - fromthe romantic glow of a candle flame to the hot, bright light of the sun.Most "white" LEDs in production today use a 450nm – 470nm blueGaN (gallium nitride) LED covered by a yellowish phosphor coating usually madeof cerium doped yttrium aluminium garnet (YAG:Ce) crystals which have beenpowdered and bound in a type of viscous adhesive. The LED chip emits bluelight, part of which is converted to yellow by the YAG:Ce. The single crystalform of YAG:Ce is actually considered a scintillator rather than a phosphor.Since yellow light stimulates the red and green receptors of the eye, theresulting mix of blue and yellow light gives the appearance of white.White LEDs can also be made by coating near ultraviolet (NUV)emitting LEDs with a mixture of high efficiency europium based red and blueemitting phosphors plus green emitting copper and aluminum doped zinc sulfide(ZnS:Cu,Al).
Lutetium is a bright silvery lustrous metal that is relatively stable in air. The metal is soft, malleable, and ductile. It has a hexagonal close-packed structure, a density of 9.840 gm/cm3, a melting
Lutetium Oxide, also called Lutecia, is the important raw materials for laser crystals, and also have specialized uses in ceramics, glass, phosphors, lasers. Lutetium Oxide also be used as catalysts i
Neodymium is a silvery-white metal that is moderately reactive and quickly oxidizes to a yellowish color in air. The metal is soft and ductile. It has a hexagonal structure, a density of 7.004 gm/cm3,
Neodymium Oxide, also called Neodymia, mainly used for glass and capacitors. Colours glass delicate shades ranging from pure violet through wine-red and warm gray. Light transmitted through such glass
Praseodymium is a silvery-yellow metallic metal that oxidizes moderately in air forming a green oxide coating. The metal is soft, malleable and ductile. It has a hexagonal structure, a density of 6.78
Praseodymium Oxide, also called Praseodymia, used to colour glasses and enamels; when mixed with certain other materials, praseodymium produces an intense clean yellow colour in glass. Component of di
Symbol:PrNdDyPurity:(Pr,Nd,Dy)/TREM ≥ 99%Specification:Pr:Nd:Dy=18:28:4Packing: In iron drum with inner PVC bags of 100kg net each, or packed according to customers' specifications.
Rare earth magnets are the strongest type of permanent magnets made from alloys of rare earth elements, producing significantly stronger magnetic fields than other types such as ferrite oralnico magne
Since its establishment , we introduce and innovate advanced technology continuously to perfect production technology gradually, and strictly control the production process.Our company has synthesis w
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