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Solar cell, solar cell panel and preparation method

A technology for solar panels and solar cells, applied in the field of solar photovoltaic, can solve the problem that the PID effect of solar cells cannot be effectively avoided.

Active Publication Date: 2021-03-19
LONGI SOLAR TECH (TAIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method cannot effectively avoid the PID effect of solar cells

Method used

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  • Solar cell, solar cell panel and preparation method
  • Solar cell, solar cell panel and preparation method
  • Solar cell, solar cell panel and preparation method

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] At present, with the application of solar cells more and more widely, solar panels with aluminum alloy frame encapsulated by tempered glass are favored by more users because of their more beautiful appearance and higher efficiency of solar cells. A large number of studies have shown that forming a good field passivation effect on the back electrode side of the solar cell can effectively improve the efficiency of the solar cell. For example, in the photovoltaic double-sided PERC (Passivated Emitter and Rear Cell, passivated emitter and back cell) cell in the prior art, the AlOx film layer on the back side of the PERC cell and the natural oxide film layer (SiOx film layer) on th...

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Abstract

Embodiments of the invention provide a solar cell, a solar cell panel and a preparation method thereof, belonging to the technical field of solar photovoltaics. The solar cell specifically comprises asilicon substrate, an attenuation film layer and a first anti-reflection film layer, wherein the attenuation film layer and the first anti-reflection film layer are stacked on the silicon substrate,and the attenuation film layer includes a plurality of stacked negative charge layers. According to the embodiments of the invention, when PID effect occurs in the solar cell, a large number of negative charges in the negative charge layer at the outermost layer are neutralized by metal ions gathered in a packaging material, but the field passivation effect of the negative charge layer at the inner layer still exists, so the PID attenuation risk of the solar cell can be effectively reduced.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to a solar cell, a solar cell panel and a preparation method. Background technique [0002] As an environmentally friendly and renewable energy source, solar energy has received more and more attention in recent years. As the core material of solar cells, cell sheets directly affect the power generation performance of solar cells. [0003] In practical applications, multiple solar cells are connected in series, and after being laminated and packaged, they are fixed with a metal frame such as aluminum alloy to form a solar panel. In order to improve the safety of the solar panel, the metal frame is usually grounded, which will cause a high bias voltage between the metal frame and the solar cell inside the solar cell. If it encounters a high temperature and high humidity environment, it will cause the PID of the solar cell (Potential Induced Degradation, potential induce...

Claims

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Application Information

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IPC IPC(8): H01L31/0216H01L31/18
CPCH01L31/02168H01L31/02167H01L31/1876H01L31/1868Y02P70/50Y02E10/50
Inventor 陈诚刘超王建波沈灿军朱琛吕俊
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD