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Solar battery module

A technology of solar cells and solar cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems that the efficiency of solar cells has not been substantially improved, so as to improve the efficiency of solar cells, reduce interface reflection, and absorb large cross-sections Effect

Inactive Publication Date: 2012-09-19
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI +1
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Problems solved by technology

But in the experiment, through the literature Klampaftis, E., et al., Enhancing the performance of solar cells via lμminescent down-shifting of the incident spectrum μm: A review. Solar Energy Materials and Solar Cells, 2009.93(8): p.1182 -1194. Found that many solar cell efficiencies have not achieved substantial improvements

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Embodiment Construction

[0020] see figure 1 and figure 2 As shown, the present invention provides a solar cell module, comprising:

[0021] A solar battery sheet 1 is a pn junction device with completed electrodes, and has an inverted pyramid structure and an anti-reflection passivation layer. Inverted pyramids are generally formed by chemical corrosion, and the anti-reflection passivation layer is generally silicon nitride with a thickness of about 80nm.

[0022] A wavelength conversion film 4, which is made on the solar cell 1 or below the glass layer 2, such as figure 1 shown. Considering that the glass layer 2 generally has a certain absorption in ultraviolet light, the wavelength conversion film 4 can be fabricated on the glass layer 2 . In this way, the ultraviolet light is absorbed by the wavelength conversion film 4 before reaching the glass layer 2, and converted into green light-near infrared light, etc., which are not easily absorbed by the glass layer. In the production process, thi...

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Abstract

The invention provides a solar battery module comprising a solar battery cell, a wavelength conversion film, a glass layer and a rear panel, wherein the wavelength conversion film is manufactured on the solar battery cell; the glass layer is placed on the solar battery cell; and the rear panel is placed on the back face of the solar battery cell. The battery module utilizes the wavelength conversion film to change a solar spectrum so as to improve the efficiency of a solar battery. The wavelength conversion film is a rare-earth composite and has the function of converting high-energy photons including near-ultraviolet light, blue light and the like into one or more low-energy photons, such as green light, near-infrared photons and the like, so as to improve the efficiency of the solar battery. The absorption range of the wavelength conversion film is 200-500 nm and the emission range is 500-1100 nm. The thickness of the wavelength conversion film is in the range of 100 nanometers to 5 microns. The battery module also can utilize a DBR (Distributed Bragg Reflector) and / or an inversed-pyramid suede structure to reduce the reflectivity and improve the efficiency of the solar battery.

Description

technical field [0001] The present invention relates to the technology of wavelength conversion materials and material structures, in particular to a solar cell module technology, which reduces the reflection of light and converts 200nm-500nm photons into 500nm-1100nm photons through the material structure, so as to improve the efficiency of solar cells. conversion efficiency. Background technique [0002] At present, solar cells generally have the problem of low efficiency. Although the efficiency of multi-junction solar cells is high, such as the current three-junction laminated battery laboratory can reach 42%, but the manufacturing process is complicated and expensive, which is not conducive to mass production. The main batteries currently on the market are single-junction batteries. Among them, the energy conversion efficiency of monocrystalline silicon cells is 16-20%, and the energy conversion efficiency of polycrystalline silicon cells is 14-17%. For single-juncti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/055
CPCY02E10/50Y02E10/52
Inventor 李乐良郑军左玉华成步文王启明郑智雄
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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