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Solar cells and their modules

A solar cell and module technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems that affect battery performance and stability, reduce battery life, and film layer decay, so as to maintain battery performance and stability and prevent The effect of overheating the battery and improving the conversion efficiency

Inactive Publication Date: 2016-08-03
MOTECH INDUSTRIES
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  • Description
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Problems solved by technology

[0003] Among them, long-wavelength light (above 1100nm) cannot be absorbed and utilized by the battery, or the absorption and utilization efficiency is not good, so when the battery receives light, most of the infrared light in the sunlight only passes through the battery without being absorbed
However, the infrared light passing through the battery will increase the temperature of the battery. This temperature effect will affect the performance and stability of the battery, and reduce the photoelectric conversion efficiency.
In addition, the battery is irradiated with sunlight for a long time and receives the ultraviolet light in it, but ultraviolet light is also a light that is difficult to be absorbed by the battery, and ultraviolet light irradiation is likely to cause the film in the battery to decay, affect the quality of the film, and then reduce the quality of the battery. life

Method used

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  • Solar cells and their modules
  • Solar cells and their modules
  • Solar cells and their modules

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, in the following description, similar elements are represented by the same numbers.

[0023] see figure 1 , the first preferred embodiment of the solar cell 1 of the present invention includes: a photoelectric conversion unit 11 and a plurality of first reflective films 12 that can transmit light.

[0024] The photoelectric conversion unit 11 includes a first surface 111 for receiving light and a second surface 112 opposite to the first surface 111 . In a cell with light incident on one side, the first side 111 and the second side 112 correspond to the front and back of the cell. In fact, the photoelectric conversion unit 11 includes a substrate, an emitter layer formed at the surface of the substrate and forming a p-n junction with the substrate, and an anti-reflection layer (eg SiN x ) and other film layers. Since the specifi...

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Abstract

Provided is a solar cell and a module thereof. The solar cell comprises a photoelectric conversion unit including a light-receiving first surface and multiple light-permeable first reflective films. The multiple first reflective films are configured on the first surface of the photoelectric conversion unit in a mutually stacked manner, and may reflect light that cannot be absorbed by the photoelectric conversion unit. By means of the multiple first reflective films, light that cannot be absorbed and used by the solar cell are prevented from entering the photoelectric conversion unit. For example, infrared light can be prevented from being absorbed by the solar cell in order to be prevented from resulting in an overheated problem of the solar cell. Therefore, the efficiency and the stability of the solar cell can be maintained.

Description

technical field [0001] The present invention relates to a battery and its module, in particular to a solar cell and its module. Background technique [0002] The spectrum of sunlight includes visible light, ultraviolet light, infrared light and other wavelengths of light. Taking silicon solar cells as an example, it mainly absorbs and utilizes visible light and near-infrared light in some wavelength bands to achieve the purpose of converting light energy into electrical energy. [0003] Among them, long-wavelength light (above 1100nm) cannot be absorbed and utilized by the battery, or the absorption and utilization efficiency is not good. Therefore, when the battery receives light, most of the infrared light in the sunlight only passes through the battery and is not absorbed. However, when infrared light passes through the battery, the temperature of the battery will increase, and this temperature effect will affect the efficiency and stability of the battery, and reduce the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/054H01L31/042
CPCY02E10/52
Inventor 陈亮斌
Owner MOTECH INDUSTRIES
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