Rare Earth Ion Activated Complex Phase Fluorescent Materials

A technology of fluorescent materials and rare earth ions, applied in the field of complex-phase fluorescent materials, can solve the problems of single luminous color, inability to match fluorescent powder, weak luminous intensity, etc.
CN104946254BActive Publication Date: 2017-04-12HANGZHOU YINGHE PHOTOELECTRONICS MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU YINGHE PHOTOELECTRONICS MATERIALS
Publication Date
2017-04-12

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Abstract

The invention provides a fluorescent material for white-light LEDs and a manufacturing method thereof. According to the fluorescent material, excitation light sources within the range of ultraviolet to green ray are excitable and rare earth Eu ions are used as a main activator. The material has illuminant color from blue system to red system. The composition of the fluorescent material is MxA delta ByOzC gamma: eta Eu, zeta D / omega T. The material is characterized in that the material is a multiphase structure composed of a rare earth ion-activated silicate or phosphate or borate fluorescent solid solution phase and one or more elements of inert metal particles such as Au, Ag, Pt and Pd. With the presence of the inert metal particles in the multiphase structure, luminescence property of the fluorescent solid solution phase can be improved obviously. After excited by ultraviolet-blue green light within the emission peak wavelengths of 300-500 nm, luminescent spectrum with one or more peaks within the peak wavelengths of 450-600 nm can be emitted, and luminescence from blue to orange red can be shown. The multiphase fluorescent material is applied in manufacturing of LED devices.
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Description

technical field

[0001] The invention relates to a composite fluorescent material, in particular to a fluorescent material for white light system and multicolor light emitting devices including semiconductor light emitting elements (LED). Background technique

[0002] With the breakthrough of the third-generation semiconductor material gallium nitride and the advent of blue, green, and white light-emitting diodes, LED (semiconductor light-emitting diode, Light-Emitting Diode), known as "the technology that illuminates the future", has gradually entered the market. our daily lives and will lead us to a brighter future. Using the third-generation semiconductor material gallium nitride as the semiconductor lighting source, the power consumption is only 1 / 10 of that of ordinary incandescent lamps at the same brightness, and the life span can reach 100,000 hours. A semiconductor lamp can be used for more than 50 years under normal conditions. As a new lighting technology, LED wil...

Claims

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