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
CN106009210BInactive Publication Date: 2019-03-05SHANGHAI NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI NORMAL UNIVERSITY
Publication Date
2019-03-05
Estimated Expiration
Not applicable · inactive patent

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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.
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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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