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A kind of eu3+/yb3+ co-doped silicate glass ceramics and its preparation method and application

A technology of glass-ceramic and silicate, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of low photoelectric conversion efficiency, achieve good spectral conversion effect, crystallization is easy to control, and good light transmission

Active Publication Date: 2018-05-25
UNIV OF JINAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the defect of low photoelectric conversion efficiency of existing silicon-based solar cells, and provides an Eu 3+ / Yb 3+ Co-doped silicate glass-ceramic, the glass-ceramic can convert the 300-480 nm short-wavelength region of sunlight into near-infrared light around 980 nm that can be efficiently used by batteries, and is a good down-conversion luminescent material

Method used

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  • A kind of eu3+/yb3+ co-doped silicate glass ceramics and its preparation method and application
  • A kind of eu3+/yb3+ co-doped silicate glass ceramics and its preparation method and application
  • A kind of eu3+/yb3+ co-doped silicate glass ceramics and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0034] Eu 3+ / Yb 3+ The preparation of the co-doped glass-ceramic material, the steps are as follows:

[0035] (1) The basic composition (mole percentage) of glass-ceramics is: 30% SiO 2 , 20%SrO, 30%BaO, 10%B 2 o 3 ,5%La 2 o 3 , 5%Al 2 o 3 ; The doping composition is P 2 o 5 、Eu 2 o 3 and Yb 2 o 3 , P 2 o 5 The dosage is 1% of the base composition, Eu 2 o 3 The dosage is 0.5% of the base composition, Yb 2 o 3 The dosage is 0.5% of the base composition. According to the composition, analytically pure silicon dioxide, strontium carbonate, barium carbonate, boric acid, lanthanum oxide, aluminum oxide, ammonium dihydrogen phosphate, europium oxide, and ytterbium oxide were accurately weighed and mixed to obtain 30 g of batch materials. Thoroughly grind and mix the batch materials in an agate mortar, then put them into a 50 ml corundum crucible, and place them in a high-temperature furnace at 1400°C for 1.5 hours to obtain a homogenized melt. The melt was po...

Embodiment 2

[0042] Eu 3+ / Yb 3+ The preparation of the co-doped glass-ceramic material, the steps are as follows:

[0043] (1) The basic composition (mole percentage) of glass-ceramics is: 30% SiO 2 , 20%SrO, 30%BaO, 10%B 2 o 3 ,5%La 2 o 3 , 5%Al 2 o 3 ; The doping composition is P 2 o 5 、Eu 2 o 3 and Yb 2 o 3 , P 2 o 5 The dosage is 1% of the base composition, Eu 2 o 3 The dosage is 0.5% of the base composition, Yb 2 o 3 The dosage is 1.0% of the base composition. According to the composition, analytically pure silicon dioxide, strontium carbonate, barium carbonate, boric acid, lanthanum oxide, aluminum oxide, ammonium dihydrogen phosphate, europium oxide, and ytterbium oxide were accurately weighed and mixed to obtain 30 g of batch materials. Thoroughly grind and mix the batch materials in an agate mortar, then put them into a 50 ml corundum crucible, and place them in a high-temperature furnace at 1400°C for 1.5 hours to obtain a homogenized melt. The melt was po...

Embodiment 3

[0048] Eu 3+ / Yb 3+ The preparation of the co-doped glass-ceramic material, the steps are as follows:

[0049] (1) The basic composition (mole percentage) of glass-ceramics is: 30% SiO 2 , 20%SrO, 30%BaO, 10%B 2 o 3 ,5%La 2 o 3 , 5%Al 2 o 3 ; The doping composition is P 2 o5 、Eu 2 o 3 and Yb 2 o 3 , P 2 o 5 The dosage is 1% of the base composition, Eu 2 o 3 The dosage is 0.5% of the base composition, Yb 2 o 3 The dosage is 2.5% of the base composition. According to the composition, analytically pure silicon dioxide, strontium carbonate, barium carbonate, boric acid, lanthanum oxide, aluminum oxide, ammonium dihydrogen phosphate, europium oxide, and ytterbium oxide were accurately weighed and mixed to obtain 30 g of batch materials. Thoroughly grind and mix the batch materials in an agate mortar, then put them into a 50 ml corundum crucible, and place them in a high-temperature furnace at 1400°C for 1.5 hours to obtain a homogenized melt. The melt was pour...

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Abstract

The invention discloses Eu3+ / Yb3+ doped silicate glass-ceramics and a preparation method and application thereof. The glass-ceramics are doped with Eu3+ / Yb3+, and contained crystals are hexagonal-phase Ba4La6O(SiO4)6. The glass-ceramics are simple in crystal phase composition, crystallization is easy to control, the glass forming capability is good, raw materials required for synthesis are easy to obtain, the volatilization quantity is less than fluorides during melting, and the glass-ceramics have small harm to human health and environment. The glass-ceramics can convert high-energy shortwave photons (300-480 nm) absorbed by Eu3+ into low-energy photons of about -1100 nm, can be used for improving the efficiency of silicon-based solar cells and have good application prospect by serving as a down-conversion luminescent material.

Description

technical field [0001] The invention relates to a rare earth-doped photofunctional glass-ceramic material, in particular to a Eu 3+ / Yb 3+ Co-doped silicate glass-ceramic, its preparation method and the application of the glass-ceramic as a down-conversion luminescent material. Background technique [0002] Using the photovoltaic effect to directly convert solar energy into electrical energy has the advantages of cleanliness, safety, and convenience, and has received great attention from all over the world. Silicon solar cells dominate the photovoltaic market due to their high reliability, long life, and ability to withstand various environmental changes. However, low photoelectric conversion efficiency has always been one of the main problems limiting the wide application of solar cells. Taking silicon solar cells as an example, the theoretical maximum photoelectric conversion efficiency is 29%, while the actual conversion efficiency is only about 15%. The main factor li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/14C03B19/02H01L31/055
CPCY02E10/52
Inventor 张维娟李祥宝于燕婴吴丽娟王晓智刘世权王志
Owner UNIV OF JINAN
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