A kind of red fluorescent composition and eva adhesive film

A technology of red light fluorescence and composition, applied in the field of fluorescent light emission, can solve the problems such as the inability to significantly improve the conversion efficiency of silicon-based solar cells, the inability to absorb ultraviolet light, the poor performance of light transmittance, etc., and to improve Light conversion efficiency, good light conversion efficiency, and the effect of improving photoelectric conversion efficiency

Active Publication Date: 2017-07-11
ANHUI HUASUN ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing up-conversion luminescent materials, the ultraviolet light below 400nm cannot be completely absorbed and the emitted spectrum is not strong, and the conversion efficiency of silicon-based solar cells cannot be significantly improved, resulting in the application of up-conversion luminescent materials. limitation
At the same time, when the up-conversion luminescent material is applied to the EVA film, it has the disadvantage of easy uneven dispersion, and the light transmittance and other properties are not good.

Method used

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  • A kind of red fluorescent composition and eva adhesive film
  • A kind of red fluorescent composition and eva adhesive film
  • A kind of red fluorescent composition and eva adhesive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. Preparation of YVO 4 :Eu 3+ ,Sr 2+ Nano phosphor

[0016] (1) Add 1.2mmol Na 3 VO 4 12H 2 O was dissolved in a mixed solution containing 5ml of ethylene glycol and 2ml of distilled water; (2) While ultrasonically stirring the above solution (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring), dropwise added 1.5mmol of a certain proportion of Y ( NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 , Sr(NO 3 ) 2 (0.9:0.03:0.07) in 8 ml of ethylene glycol solution, then ultrasonically stirred (80KHz ultrasonic vibration and 300r / min centrifugal speed stirring) for 10min until the solution was clear, and 20ml of distilled water was added; (3) Pour the reaction solution into a volume of In a 50 ml polytetrafluoroethylene-lined autoclave, under vacuum, 200 o C under heat preservation reaction 1h, down to 150 o C under insulation reaction 1h, after the end of the reaction, cooled to room temperature. The resulting suspension was poured out, centrifuged and washed ...

Embodiment 2

[0024] On the basis of embodiment 1, the YVO in the step 3 4 :Eu 3+ ,Sr 2+ with YVO 4 :Eu 3+ , Bi 3+ The weight ratio is changed to 1:0.5, and the rest are the same as in Example 1.

Embodiment 3

[0026] On the basis of embodiment 1, the YVO in the step 3 4 :Eu 3+ ,Sr 2+ with YVO 4 :Eu 3+ , Bi 3+ The weight ratio was changed to 1:0.001, and the rest were the same as in Example 1.

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Abstract

The invention discloses a red fluorescent composition, which is used for the EVA adhesive film of solar modules, and the red fluorescent composition is YVO 4 :Eu 3+ ,Sr 2+ @YVO 4 :Eu 3+ , Bi 3+ or YVO 4 :Eu 3+ ,Sr 2+ @YVO 4 :Eu 3+ , Bi 3+ @Ag@SiO 2 Red fluorescent composition. The invention also discloses an EVA adhesive film applied to solar cells. The red light fluorescent composition has strong absorption for ultraviolet light below 400nm and strong red light emission intensity, and improves the light conversion efficiency.

Description

technical field [0001] The invention relates to the field of fluorescent lighting, in particular to a red fluorescent composition and an EVA adhesive film filled with the red fluorescent composition. Background technique [0002] Theoretical calculations show that the limit photoelectric conversion rate of traditional silicon cells is 29%, so it is difficult to further improve its energy conversion efficiency only by improving the material processing technology. Solar cell expert B.S.Richards once pointed out that the further improvement of photoelectric conversion efficiency in the future will mainly rely on the modulation of the input solar spectrum. Due to the fixed band gap (1.12eV) of silicon semiconductors, traditional crystalline silicon solar cells cannot completely absorb and convert natural sunlight energy. The energy in the solar infrared spectrum region that reaches the ground accounts for about 50% of the entire solar spectrum energy, but only sunlight with a w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/82H01L31/048
CPCY02E10/50
Inventor 严梅霞
Owner ANHUI HUASUN ENERGY CO LTD
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