摘要:
This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula Mw-pAlyOzXq:Rp, wherein M is at least one element selected from the group of Be, Mg, Ca, Sr, Ba and Zn; X is at least one element selected from the group of F, Cl, Br, and I; R is one or more elements selected from the group of the transition metals and at least one element selected from the lanthanide series. Because the emitting wavelength of the metal haloaluminate compound phosphor is 550˜650 nm which is from the green to the red light spectrum, the white light mixed by the converted light of the metal haloaluminate phosphor and the blue light has better color rendering index. Besides, this invention also discloses the optoelectronic devices comprising the metal haloaluminate compound phosphor.
摘要:
A method for manufacturing a white light source includes steps of providing an ultra-violet light as a radiation source, preparing three kinds of first phosphors each receiving the ultra-violet light and emitting the light of red, green and blue, respectively, and preparing at least one additional second phosphor to modify a spectral property of the light emitted by the three first phosphors in order to improve the brightness and color rendering property of the white light source. Moreover, at least one phosphor with the fluorescent property is used as the above second phosphor powder to obtain a color-changeable light source.
摘要:
A white light-emitting device comprising a blue-violet or blue LED and a phosphor material capable of emitting a yellow-green to orange-yellow light upon excitation by the light emitted by the LED. The light from the LED and the phosphor material are mixed in an appropriate ratio to produce a white light. The phosphor material has a general formula (YxMyCez)Al5O12, where x+y=3, x, y≠0, 0.5>z>0, and M is selected from the group consisting of Tb, Lu, and Yb, with (YxMy)Al5O12 serving as a host and Ce as an activator. By changing the composition of the metal elements in the host, the crystal field is modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light, leading to the change in the emitting wavelength of the phosphor material.
摘要翻译:一种白色发光装置,其包括蓝紫色或蓝色LED,以及荧光体材料,其在由LED发射的光激发时能够发出黄绿色至橙黄色光。 来自LED和磷光体材料的光以适当的比例混合以产生白光。 荧光体材料具有通式(Y 1),以及C 1至C 5 其中x + y = 3,x,y> 0,0.5> z> 0,并且M选自Tb,Lu和Yb,其中(Y x x) 作为主体的Ce 5 N 12 O 12,Ce作为活化剂。 通过改变主体中的金属元素的组成,晶体场被调制,从而改变在特定波长的光照射时活化剂被转移的激发态的能级,导致发射波长的变化 的荧光体材料。
摘要:
A yellow phosphor material has a host with a formula (TbxMyCez)Al5O12, wherein x+y+z=3 , 3>x>0 and y≠0 and a Ce activator. M is selected from the group consisting of Sc, Y, Dy, Ho, Er, Tm, Yb, and Lu. By changing the diameter of metal ions, the crystal field thereof may be modulated to thereby alter the energy level of the excited state to which the activator is transferred upon irradiation by a specific wavelength of light. The phosphor can be used with a blue LED to form a white light source.
摘要翻译:黄色荧光体材料具有具有下式的主体:具有下式的主体:(B 1 H 5) 其中x + y + z = 3,3> 0和y>和Ce活化剂。 M选自Sc,Y,Dy,Ho,Er,Tm,Yb和Lu。 通过改变金属离子的直径,其晶体场可被调制,从而改变在特定波长的光照射时活化剂转移到的激发态的能级。 荧光体可与蓝色LED一起使用以形成白色光源。
摘要:
A method for manufacturing white light source includes the steps of providing an ultra-violet light as radiation source; and preparing two kinds of phosphors each receiving the ultra-violet light and emitting light of different wavelength. One phosphor is designated to emit light covering two wavelength regimes of three primitive colors, i.e., red light (585-640 nm), green light (500-570 nm) and blue light (430-490 nm), and another phosphor is designated to emit light covering remaining wavelength regime of the three primitive colors. The phosphors are mixed in predetermined ratio such that the lights of different wavelength are combined to provide a white light.
摘要:
A manufacturing method for white light source utilizes an ultraviolet light source and suitable phosphors. One of the phosphors is directly excited by the ultraviolet light source and generates a radiation with longer wavelength. Other phosphors are excited by the radiation with longer wavelength and generate radiation with much longer wavelength. The lights generated by those phosphors are mixed to form a white light.
摘要:
A light emitting diode and a method for making the same are proposed. The LED comprises an inorganic phosphor, a silicon compound and an organic glue. The silicon compound has one side being completely or partially C1-C6 alkyl oxide reacted with the inorganic phosphor to modify the surface property of the inorganic phosphor and another side being a functional group selected from a group consisting of epoxy, C1-C6 alkyl, phenyl, amino. The inorganic phosphor with modified surface property can be uniformly mixed in the glue and less deposition is produced.