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A YAB/SIO2 near-infrared micro-nano composite luminescent material synergistic EVA film and its preparation method and application

A luminescent material, micro-nano technology, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve the problems of near-infrared micro-nano luminescent materials that are difficult to uniformly disperse, unfavorable for battery photoelectric conversion efficiency, and unfavorable for industrialized production, etc. Easy long-term storage, stable fluorescence performance, uniform performance

Inactive Publication Date: 2019-03-05
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since YAB / SiO 2 It is difficult for near-infrared micro-nano luminescent materials to be uniformly dispersed in the EVA masterbatch, and the performance after film formation is difficult to be consistent, which is not conducive to the improvement of the photoelectric conversion efficiency of the battery, and is also not conducive to industrial production

Method used

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  • A YAB/SIO2 near-infrared micro-nano composite luminescent material synergistic EVA film and its preparation method and application
  • A YAB/SIO2 near-infrared micro-nano composite luminescent material synergistic EVA film and its preparation method and application
  • A YAB/SIO2 near-infrared micro-nano composite luminescent material synergistic EVA film and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0049] A kind of YAB / SiO provided by the present embodiment 2 The preparation method of the micro-nano near-infrared emitting material, the specific steps are as follows:

[0050] 1) take by weighing following material: the Y of 95.3822g 2 o 3 , 136.5448g Al 2 o 3 , 249.2986g of H 3 BO 3 , 23.2848g of Bi(NO 3 ) 3 ·5H 2 O, 13.2410 g of Yb 2 o 3 , 15.3206g Cr 2 o 3 .

[0051] 2) Mix and stir the above-mentioned raw materials in a high-speed disperser;

[0052] 3) Sinter the above uniformly mixed powder in a high-temperature furnace at 1200°C for 6 hours to obtain a YAB fluorescent emission material. The excitation and emission spectra are as follows: figure 1 shown;

[0053] 4) Take 200g of the above-mentioned YAB fluorescent emitting material in a ball mill jar, add nano-SiO 2 16g, after adding appropriate amount of agate beads for ball milling and deionized water, ball mill for 12 hours;

[0054] 5) The above ball-milled slurry is dried at 120°C in a blast dr...

Embodiment 2

[0058] A kind of YAB / SiO provided by the present embodiment 2 The preparation method of the micro-nano near-infrared emitting material is basically the same as that of Example 1, except that:

[0059] Step 5) change the above-mentioned 200g YAB fluorescent emitting material after ball milling and 16g SiO 2 The airgel was stirred and mixed in the ethanol solution for 1 hour.

Embodiment 3

[0061] A kind of YAB / SiO provided by the present embodiment 2 The preparation method of the micro-nano near-infrared emitting material is basically the same as that of Example 1, the difference is:

[0062] SiO in step 5) 2 The amount of airgel added is changed to 12g.

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Abstract

The invention relates to a YAB / SiO2 near-infrared micro-nano recombination luminescent material synergistic EVA film and a preparation method and application thereof. The preparation method comprises the following steps that firstly, absolute ethyl alcohol and a non-polarity organic solvent are prepared into a mixed solvent; secondly, a YAB / SiO2 near-infrared micro-nano recombination luminescent material is added, stirring and ultrasonic treating are carried out until the temperature becomes 30-50 DEG C, and a sizing agent is prepared; thirdly, a surface swelling method is adopted, an EVA film sold in market is soaked in the sizing agent, drying is carried out, and then the YAB / SiO2 near-infrared micro-nano recombination luminescent material synergistic EVA film is obtained. The film has abilities of photon converting, scattering, refracting and permeability increasing and other photon managing abilities and can be applied to synergism of a silicon solar cell. Compared with the prior art, the prepared synergistic EVA film has the advantages of being uniform and consistent in performance, capable of effectively increasing the light transmissivity and the current density of the cell when applied to the silicon solar cell and improving the ageing performance of the EVA film and the like.

Description

technical field [0001] The invention belongs to the field of luminescent material technology and photovoltaic technology, in particular to a YAB / SiO 2 Near-infrared micro-nano composite luminescent material synergistic EVA film and its preparation method and the application of this technology in the efficiency enhancement of silicon solar cells. Background technique [0002] The energy loss of traditional silicon solar cells (crystalline silicon is an indirect energy gap semiconductor material with an energy gap of 1.12eV, which can only effectively absorb and utilize 700-1100nm solar photons) mainly has four processes: 1. Heat loss; 2. Interface Potential loss; 3. Contact resistance loss; 4. Composite loss. Among them, heat loss is the most critical. Photons above the bandgap of silicon are mostly converted into heat energy quickly in the form of hot carriers, which reduces the efficiency of solar cells. The theoretical conversion efficiency value of crystalline silicon ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K3/36C08K3/38C09K11/80H01L31/048
CPCY02E10/50
Inventor 余锡宾聂思洋殷慧敏王雨芹陈明祝燕
Owner SHANGHAI NORMAL UNIVERSITY
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