Blue borate phosphor powder excited by near ultraviolet and preparation method thereof

The technology of blue phosphor and borate is applied in the field of near-ultraviolet excited borate blue phosphor and its preparation, which can solve the problem of high cost of blue phosphor, achieve low cost, stable product performance and high energy efficiency. less consumption

Active Publication Date: 2014-05-14
杨鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the cost of the blue phosphor in the prior art is relatively high and it is difficult to meet the technical requirements of the above two aspects

Method used

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  • Blue borate phosphor powder excited by near ultraviolet and preparation method thereof
  • Blue borate phosphor powder excited by near ultraviolet and preparation method thereof
  • Blue borate phosphor powder excited by near ultraviolet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Sr 2-2x ClO 3 : 0.07Tm 3+ , 0.07Li + Near-UV Excited Borate Blue Phosphors

[0031] According to the raw material ratio of above-mentioned general formula as shown in the following table:

[0032] raw material

h 3 BO 3

Sr 2 CO 3

SrCl 2 ·6H 2 o

T m 2 o 3

Li 2 CO 3

weight

0.3174g

1.0037g

0.6666g

0.0675g

0.0129g

[0033] (1) Accurately weigh the above raw materials, fully grind them in an agate crucible for 20 minutes to obtain a fine powder with uniform particles, mix them evenly and put them into a ceramic crucible.

[0034] (2) Put the above-mentioned fine powder into the muffle furnace according to the set procedure, first raise the temperature from room temperature to 400°C for 60 minutes after 70 minutes, and then raise it to 800°C for 6 hours after 90 minutes. After the furnace is cooled to room temperature and taken out, it is ground into powder with an agate crucible to obtain...

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Abstract

The invention discloses blue borate phosphor powder excited by near ultraviolet and a preparation method thereof. The general formula of the combination ratio of the blue borate phosphor powder is Sr2-2xClO3 to xTm3+, xLi+, wherein x is greater than or equal to 0 and smaller than and equal to 0.2. The preparation method comprises the following steps of (1) weighing all raw material components according to the general formula of the combination ratio; (2) mixing all the raw material components evenly and fully, and performing primary grinding on the mixed raw material components to obtain fine powder with uniform particles; (3) preburning, calcining and cooling the fine powder, and performing secondary grinding on the fine powder to obtain the blue borate phosphor powder. The blue borate phosphor powder can be excited by 385-nm near ultraviolet, emit blue light at 457nm and be applied to a trichromatic phosphor powder system excited by near ultraviolet. Furthermore, the blue borate phosphor powder can be applied to preparing monocrystalline silicon batteries, therefore, spectral response of the monocrystalline silicon batteries to sunlight is improved, and efficiency of crystalline silicon batteries is increased. The preparation method adopts a high-temperature solid phase synthesis method and is low in heating temperature and energy consumption, single in used device, less in device investment, simple in process, low in cost and stable in product performance.

Description

technical field [0001] The invention specifically relates to a near-ultraviolet excited borate blue fluorescent powder and a preparation method thereof. Background technique [0002] Because of its energy saving, high efficiency, long life and environmental protection, white LED is called a new generation of solid-state lighting, and it has attracted much attention and quickly entered the fields of lighting, automobiles, and personal communication equipment. This new type of green light source must be a new generation of lighting source, which has extensive and far-reaching significance for energy saving, environmental protection, and providing people's quality of life. At present, there are two main schemes for obtaining white light LEDs, one is multi-chip combination type. Combining LEDs that emit red, green, and blue light respectively, and mixing the three kinds of light to form white light. The white light of this scheme has the advantages of high brightness, good sta...

Claims

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Application Information

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IPC IPC(8): C09K11/61H01L31/055
CPCY02E10/52
Inventor 陈朝郑将辉应莉莉蔡丽晗陈蓉范宝殿
Owner 杨鹏
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