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A kind of solar cell sheet and solar cell module

A solar cell and passivation layer technology, applied in the field of solar cells, can solve the problems of reducing the utilization rate of incident light and limiting the increase of short-circuit current, so as to achieve the effects of increasing photon utilization rate, reducing absorption and improving utilization rate

Active Publication Date: 2018-02-06
BAODING TIANWEI YINGLI NEW ENERGY RESOURCES +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the narrow band gap of amorphous silicon, the front passivation layer and front field doped layer will absorb the incident sunlight, thereby reducing the utilization rate of incident light and limiting the increase of short-circuit current.

Method used

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  • A kind of solar cell sheet and solar cell module
  • A kind of solar cell sheet and solar cell module
  • A kind of solar cell sheet and solar cell module

Examples

Experimental program
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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 The back view of the IBC structure shown, in the prior art, the negative electrode area 1 and the positive electrode area 2 are interspersed.

[0023] Such as figure 2 As shown, it is an embodiment of a solar battery sheet of the present invention, including a substrate 6, a passivation layer 5 on the upper and lower surfaces of the substrate 6, a front field doped layer 4 on the upper surface passivation layer 5, and a front field doped layer 4 on the upper surface of the passivation layer. The anti-reflection layer 3 on the field doping layer 4, the interdigitated structure 7 located under the passivation layer 5 on the lower surface, the TCO film 8 and the metal electrode 9, the passivation layer 5 is a hydrogenated amorphous silicon oxide film; an N-type substrate is selected The passivation layer 5 is a...

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Abstract

The invention discloses a solar cell and a solar cell module, and relates to the technical field of solar energy. The solar cell comprises a substrate, passivation layers on the upper surface and the lower surface of the substrate, a front field doping layer positioned on the passivation layer on the upper surface, an antireflection layer positioned on the front field doping layer, interdigital structures positioned under the passivation layer on the lower surface, TCO thin films and metal electrodes, wherein the passivation layers are hydrogenation amorphous silicon oxide thin films. The solar cell is simple in structure and convenient to use, the utilization rate of incident light is improved, and the photoelectric conversion efficiency of the solar cell is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells. Background technique [0002] The improvement of solar cell performance is an important symbol of technological development in the field of photovoltaics. Among them, the open circuit voltage, short circuit current and fill factor of the solar cell are the basic performance indicators of the solar cell. Improving any of these indicators will increase the power generation of the solar cell. [0003] Interdigitated back contact (IBC) structure solar cells, since all the front grid lines are moved to the back side, the shading loss caused by the front grid lines is greatly reduced, and the short-circuit current is improved; in addition, an interdigitated battery is formed on the back side Structure, that is, the back field of the first conductivity type (such as N type) and the emitter of the second conductivity type (such as P type) form a cross-arranged finger structure, such as figure 1 As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0216
CPCH01L31/02168Y02E10/50
Inventor 李锋史金超刘大伟王子谦吴翠姑张雷宋登元
Owner BAODING TIANWEI YINGLI NEW ENERGY RESOURCES