Yellow light-emitting low temperature co-fired ceramic material and preparation method thereof

A technology of low-temperature co-fired ceramics and ceramic materials, applied in the field of electronic ceramic materials and luminescent materials, to achieve the effects of low synthesis temperature, improved luminous efficiency, and low sintering temperature

Inactive Publication Date: 2012-01-18
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Yellow light-emitting low temperature co-fired ceramic material and preparation method thereof
  • Yellow light-emitting low temperature co-fired ceramic material and preparation method thereof
  • Yellow light-emitting low temperature co-fired ceramic material and preparation method thereof

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Embodiment 1

[0034] 1) Weigh the analytical pure according to the following ratio, accounting for 60% Si(OC 2 h 5 ) 4 , CaCO with a molar percentage of 15% 3 , 15% B by mole percentage 2 o 3 The corresponding amount of H 3 BO 3 , the corresponding amount of Tb containing Tb with a molar percentage of 5% 4 o 7 and 5 mole percent contains K corresponding to the amount of K 2 CO 3 . First, pour analytical grade ethanol into the Si(OC 2 h 5 ) 4 (volume ratio of ethyl orthosilicate:ethanol = 1:1), and adding stabilizer acetic acid, stirring at room temperature to obtain an organic solution.

[0035] 2) CaCO 3 , Tb 4 o 7 and K 2 CO 3 Put the powder into a beaker and add HNO 3 solution (water: HNO 3 volume ratio = 1:1) to dissolve until clear to obtain an inorganic solution.

[0036] 3) Slowly pour the inorganic solution into the organic solution, use nitric acid as a catalyst and adjust the pH value of the solution to 3 with nitric acid, and stir in a water bath at 80°C fo...

Embodiment 2

[0042] 1) Weigh the analytical pure according to the following ratio, accounting for 65% Si(OC 2 h 5 ) 4 , CaCO with a molar percentage of 15% 3 , B with a mole percentage of 13% 2 o 3 The corresponding amount of H 3 BO 3 , 2.5% molar percentage containing Tb, Ce corresponding to the amount of Tb 4 o 7 and CeO 2 And the mole percentage is 3.5% contains K corresponding to the amount of K 2 CO 3 . First, a certain amount of analytically pure ethanol was poured into the Si(OC 2 h 5 ) 4 (volume ratio of ethyl orthosilicate:ethanol = 1:1), and adding stabilizer acetic acid, stirring at room temperature to obtain an organic solution.

[0043] 2) CaCO 3 , Tb 4 o 7 , CeO 2 and K 2 CO 3 Put the powder into a beaker and add HNO 3 solution (water: HNO 3 volume ratio = 1:1) to dissolve until clear to obtain an inorganic solution.

[0044] 3) Slowly pour the inorganic solution into the organic solution, use nitric acid as a catalyst and adjust the pH value of the ...

Embodiment 3

[0049] 1) Weigh the analytical pure according to the following ratio, accounting for 70% Si(OC 2 h 5 ) 4 , the molar percentage is 18%CaCO 3 , 10% by mole of B 2 o 3 The corresponding amount of H 3 BO 3 , the corresponding amount of Tb containing Tb with a molar percentage of 1% 4 o 7 and the amount of Na corresponding to 1% by mole percent of Na 2 CO 3 . First, a certain amount of analytically pure ethanol was poured into the Si(OC 2 h 5 ) 4 (volume ratio of ethyl orthosilicate:ethanol = 1:1), and adding stabilizer acetic acid, stirring at room temperature to obtain an organic solution.

[0050] 2) Add CaCO 3 , Tb 4 o 7 , and Na 2 CO 3 Put the powder into a beaker and add HNO 3 solution (water: HNO 3 volume ratio = 1:1) to dissolve until clear to obtain an inorganic solution.

[0051] 3) Slowly pour the inorganic solution into the organic solution, use nitric acid as a catalyst and adjust the pH value of the solution to 2.5 with nitric acid, and stir...

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Abstract

The present invention relates to a calcium-boron-silicon based yellow light-emitting low temperature co-fired ceramic material synthesized through a Sol-Gel method, and a preparation method thereof. The doped activator in the ceramic material comprises one or two selected from Ce<3+> and Tb<3+>. The ceramic material comprises the following components, by mole, 15-20% of CaO, 60-70% of SiO2, 10-25% of B2O3, 1-9% of the activator ion and 1-9% of charge compensating agent ion. The material and the preparation method have the following advantages that: the luminous intensity is good, yellow lightwith a wavelength of about 541 nm can be emitted under the excitation of blue light with a wavelength of 460-490 nm; a LTCC substrate prepared from the material provided by the present invention can emit light under the excitation of a luminous chip, such that the LTCC substrate can be applicable for production of the LED lamp so as to simplify the production process, therefore, the ceramic material can be applicable for the field of white light LED, LTCC substrate materials and microelectronic packaging materials; the sintering temperature is low, the sintering temperature range is broad; the sintering shrinkage is controllable; the dielectric constant is adjustable and in a range of 3-7 (1 MHz), the dielectric loss is less than 0.002; the mechanical strength is high and the heat performance is good.

Description

technical field [0001] The invention belongs to the field of electronic ceramic materials and luminescent materials, and relates to a low-temperature co-fired ceramic material emitting yellow light and a preparation method thereof. The ceramic material can be used in the field of white light LEDs. Background technique [0002] As a new generation of solid-state lighting sources, white light emitting diodes (light emitting diodes, LEDs) have higher service life, luminous efficiency, environmental protection and reliability than traditional incandescent and fluorescent lamps. At present, the most common method to realize white LED is to combine blue LED (InGaN) and yttrium aluminum garnet phosphor (YAG:Ce 3+ ) combined, and InGaN∕YAG:Ce 3+ White LEDs have encountered difficulties in color rendering and luminous efficiency. According to literature 1 (Semiconductor Technology, 2008, 33(4): 281-285), the optical characteristics of LED must be realized through packaging, and on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622
Inventor 刘世香刘丹周济车平李文军常志东周花蕾
Owner UNIV OF SCI & TECH BEIJING
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