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Wafer type solar cell and method for manufacturing same

A solar cell, wafer-type technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as the reduction of hole collection efficiency, and achieve the effect of improving battery efficiency, preventing the reduction of battery efficiency, and improving efficiency

Active Publication Date: 2012-02-08
JUSUNG ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the P+ type semiconductor layer 50 is formed on the surface opposite to the sunlight incident surface, which reduces the efficiency of hole collection.

Method used

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  • Wafer type solar cell and method for manufacturing same
  • Wafer type solar cell and method for manufacturing same
  • Wafer type solar cell and method for manufacturing same

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Embodiment Construction

[0053] Preferred embodiments and examples of the present invention will be described in detail below with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0054] figure 2 Shown is a schematic cross-sectional view of a wafer-type solar cell according to a first embodiment of the present invention.

[0055] like figure 2 As shown, the wafer-type solar cell according to the first embodiment of the present invention includes: a first semiconductor layer 100, a second semiconductor layer 200, a third semiconductor layer 300, a first protective layer 400, a second protective layer 500, a second protective layer An electrode 600 and a second electrode 700.

[0056] The first semiconductor layer 100 is composed of a semiconductor wafer, for example, may be composed of an N-type semiconductor wafer. However, the first semiconductor layer 100 may also be composed of a P-...

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PUM

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Abstract

Disclosed is a wafer type solar cell and a method for manufacturing the same, which facilitates enhancement of hole-collecting efficiency, and improves cell efficiency by preventing transmittance of solar ray from being lowered, the wafer type solar cell comprising a first semiconductor layer of a semiconductor wafer; a second semiconductor layer doped with P-type dopant, wherein the second semiconductor layer is formed on one surface of the first semiconductor layer, on which solar ray is incident; a third semiconductor layer doped with N-type dopant, wherein the third semiconductor layer is formed on the other surface of the first semiconductor layer; a first passivation layer on the second semiconductor layer; a second passivation layer on the third semiconductor layer; a first electrode connected with the second semiconductor layer; and a second electrode connected with the third semiconductor layer.

Description

technical field [0001] The invention designs a solar cell, and more particularly relates to a wafer type solar cell. Background technique [0002] Solar cells use the characteristics of semiconductors to convert light energy into electricity. [0003] A solar cell is composed of a PN junction structure in which a P-type semiconductor and an N-type semiconductor are combined. When sunlight irradiates a solar cell with a PN junction structure, holes and electrons are generated in the semiconductor due to the energy of sunlight. Under the action of the electric field of the PN junction, the holes drift to the P-type semiconductor, and the electrons drift to the N-type semiconductor, thereby generating a potential and accompanied by a current. [0004] Solar cells can be broadly classified into wafer type solar cells and thin film type solar cells. [0005] Thin-film solar cells are made by forming thin-film semiconductors on glass substrates. A wafer-type solar cell is made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/06H01L31/0352H01L31/18
CPCH01L31/02167H01L31/022425H01L31/02363H01L31/068Y02E10/547H01L31/02168
Inventor 李正贤
Owner JUSUNG ENG