Efficient white light emission glass containing silver nanoparticles, and preparation method thereof

A silver nanoparticle, white light technology, applied in the field of solid luminescent materials and their preparation, can solve the problems of poor color rendering, coating and the like, and achieve the effects of low cost, simple glass components, and color difference resolution

Inactive Publication Date: 2013-09-04
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented inventive material solves problems related to current methods for producing colored lights such as dichroic yellow (Y), cyan or magenta) due to their complex compositions that require expensive equipment during processing. These technical features include being able to generate various types of visible rays from short wave ultra violets without causing unwanted side reactions on other components within the lamp' s structure. Additionally, this method allows for easier control over how much energy it produces when exposed to specific ranges of UV radiation.

Problems solved by technology

Technological Problem addressed in this patents relates to improving the quality and effectiveness of light generation from various types of lights including bulbs or gas tubes without losing much power compared to current methods like electricity. Additionally, there is concern over potential health hazards caused by excessive use of harmful chemical substances released when burning conventional cathode ray tubes. To address these concerns, the inventions described involve developing novel green compositions containing rare earth elements activating quantum dots instead of singly distributed red CFL' s particles.

Method used

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  • Efficient white light emission glass containing silver nanoparticles, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Prepare materials according to the following molar ratios:

[0029] SiO 2 50%Al 2 o 3 20%

[0030] CaCO 3 20% Li 2 CO 3 10%

[0031] Eu 2 o 3 0.2% Ag 2 O 1%;

[0032] (2) After fully grinding the components prepared in step (1) until they are evenly mixed, melt at 1600°C for 1 hour under air atmosphere conditions, and finally undergo conventional molding and anneal at 680°C for 6 hours to obtain high-efficiency white light emission Glass containing silver nanoparticles, consisting of components in the following molar ratios:

[0033] SiO 2 50%Al 2 o 3 20%

[0034] CaO 20% Li 2 O 10%

[0035] Eu 2 o 3 0.2% Ag 2 O 1%.

[0036] The glass is colorless and transparent glass, which emits bright white light under the excitation of 379nm ultraviolet light, and has good color rendering, such as figure 1 shown.

Embodiment 2

[0038] (1) Prepare materials according to the following molar ratios:

[0039] SiO 2 55%Al 2 o 3 20%

[0040] CaCO 3 20% Li 2 CO 3 5%

[0041] Eu 2 o 3 0.2% Ag 2 O 0.1%;

[0042] (2) After fully grinding the components prepared in step (1) until they are evenly mixed, melt at 1580°C for 2 hours under air atmosphere conditions, and finally undergo conventional molding and anneal at 700°C for 2 hours to obtain high-efficiency white light emission Glass containing silver nanoparticles, consisting of components in the following molar ratios:

[0043] SiO 2 55%Al 2 o 3 20%

[0044] CaO 20% Li 2 O 5%

[0045] Eu 2 o 3 0.2% Ag 2 O 0.1%.

Embodiment 3

[0047] (1) Prepare materials according to the following molar ratios:

[0048] SiO 2 60%Al 2 o 3 20%

[0049] CaCO 3 20% Li 2 CO 3 0%

[0050] Eu 2 o3 0.2% Ag 2 O 4%,

[0051] Among them, 0≤x≤10, 0.1≤y≤4;

[0052] (2) After fully grinding the components prepared in step (1) until they are evenly mixed, melt at 1550°C for 3 hours under air atmosphere conditions, and finally undergo conventional molding and anneal at 550°C for 8 hours to obtain high-efficiency white light emission Glass containing silver nanoparticles, consisting of components in the following molar ratios:

[0053] SiO 2 60%Al 2 o 3 20%

[0054] CaO 20% Li 2 O 0%

[0055] Eu 2 o 3 0.2% Ag 2 O 4%.

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Abstract

The invention provides efficient white light emission glass containing silver nanoparticles, and a preparation method thereof. The efficient white light emission glass is composed of the following components by mole: (60-x)% of SiO2, 20% of Al2O3, 20% of CaO, x% of Li2O, 0.2% of Eu2O3 and y% ofAg2O, wherein 0 =< x <= 10; and 0.1 =< y <= 4. The efficient white light emission glass containing the silver nanoparticles is obtained by the steps of preparing materials according to the above molar ratios, grinding the prepared components thoroughly to uniformly mixed; melting the mixture under an air atmosphere; and finally subjecting the melted mixture to conventional molding and annealing. The efficient white light emission glass has the characteristics of simple glass components, high fluorescent intensity, wide excitation wavelengths, and easily adjustable white light color temperature. The white light glass has the characteristics that the melting process is simple and carried out under the air atmosphere and has strong glass-forming force, low cost and no pollution to environment. The color difference caused by different luminescent lifetimes of trichromatic phosphors is solved; and at the same time, the problems of deliquesce and complex coating of conventional phosphors are prevented. The efficient white light emission glass containing the silver nanoparticles can be used for manufacturing novel white light LED illumination and display devices excited by near ultraviolet chips.

Description

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Claims

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Application Information

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Owner KUNMING UNIV OF SCI & TECH
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