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Preparation method of up-conversion fluorescent glass for solar cells

A technology of solar cells and fluorescent glass, which is applied in circuits, photovoltaic power generation, electrical components, etc., and can solve problems such as inability to actually form product applications, reduced sunlight transmittance, and low luminous efficiency of fluorescent particles.

Inactive Publication Date: 2012-01-25
SHANGHAI KERUN PHOSPHOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The disadvantages of the prior art are: People use the up-conversion fluorescent material to simply coat the conversion layer. Due to the dense printing and the blocking of the paint, the visible sunlight transmittance is greatly reduced; and then people pursue the reduction of the up-conversion fluorescent material particles to However, due to the low luminous efficiency of nanoscale up-conversion fluorescent particles, usually only 2-5% of the luminous efficiency of conventional luminescent materials, it is impossible to actually form product applications

Method used

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  • Preparation method of up-conversion fluorescent glass for solar cells
  • Preparation method of up-conversion fluorescent glass for solar cells

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preparation example Construction

[0013] A method for preparing up-conversion fluorescent glass for solar cells includes: up-conversion phosphor material (2) and colorless transparent glass material for solar cells; mixing up-conversion phosphor and transparent glass material at a weight ratio of 1:50-200 It is uniform and made into flat colorless transparent glass (3), which is sealed on the front surface of the solar cell (4). When the ratio of up-conversion phosphor is large, the conversion efficiency is high, and the light transmittance is low; conversely, when the proportion of up-conversion phosphor is small, the conversion efficiency is low, and the light transmittance is high; the best ratio of up-conversion phosphor and transparent glass material is 1:100.

[0014] When sunlight (1) irradiates the up-conversion fluorescent glass on the surface of the solar cell, the near-infrared light 800-1600 nm in the sunlight can be converted into visible light, which is absorbed by the solar cell, thereby improving ...

Embodiment 1

[0023] Take 1 kg of the up-conversion phosphor material, soak it in an aqueous solution containing tetraethyl orthosilicate for 2 hours, take it out and dry it, and make the surface covered with a silicon dioxide film.

[0024] The above materials are fully mixed with 100 kilograms of silicate glass powder material, and the temperature is above 600 degrees to make up-conversion fluorescent flat glass.

[0025] The up-conversion fluorescent flat glass covering the surface of the solar cell can increase the photoelectric conversion efficiency by 2%.

Embodiment 2

[0027] Take 10 grams of the up-conversion phosphor material, soak it in an aqueous solution containing butyl titanate for 1 hour, take it out and dry it, and make its surface wrap the titanium dioxide film.

[0028] The above materials are mixed with 1500 grams of epoxy resin and cured at a temperature of 100 degrees to make up-conversion fluorescent flat epoxy glass.

[0029] The up-conversion fluorescent flat resin glass is encapsulated on the surface of the solar cell, and the photoelectric conversion efficiency can be improved by 1%.

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Abstract

The invention relates to a preparation method of up-conversion fluorescent glass for solar cells, which comprises the following steps: taking up-conversion fluorescent powder material and colorless and transparent glass material for solar cells; uniformly mixing the up-conversion fluorescent powder with the transparent glass material according to the weight ratio of 1:50-200, and preparing the mixture into flat colorless and transparent glass; and packaging the flat colorless and transparent glass on the front surface of a solar cell. The colorless and transparent glass material for solar cells can be inorganic glass material, organic glass material or colloid solution with inorganic glass components. The invention can enable the solar cell to receive near infrared light, thereby improving the conversion efficiency of the solar cell.

Description

Technical field [0001] The invention belongs to the technical field of solar cell application. Background technique [0002] Most of the existing solar cell technology is based on silicon-based materials, which can have a high-efficiency photoelectric energy conversion function for the spectrum of sunlight below 540nm, and its high efficiency is mainly concentrated between near-ultraviolet light and blue-green light. The photoelectric conversion efficiency of sunlight above 540nm is low. There is abundant near-infrared light in sunlight, but its role in the photoelectric conversion of solar cells is close to zero. Since up-conversion fluorescent materials can convert near-infrared invisible light into visible light, this method has become one of the ways people hope to improve solar energy utilization efficiency. [0003] The preparation technology of high-efficiency up-conversion fluorescent material is relatively mature, its synthesis process is simple, and the cost is low. It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0232H01L31/18C03C4/12H01L31/054
CPCY02E10/50Y02P70/50
Inventor 郑岩边静宇耿树范
Owner SHANGHAI KERUN PHOSPHOR TECH
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