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Solar cell, associated manufacturing and operating method, and device with solar cell and voltage source

A technology of solar cells and external voltage, applied in the field of solar cells to achieve high efficiency

Active Publication Date: 2021-03-19
成都特频微电子科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus in practice the efficiency of conventional solar cells is limited to about 20% to 25%

Method used

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  • Solar cell, associated manufacturing and operating method, and device with solar cell and voltage source
  • Solar cell, associated manufacturing and operating method, and device with solar cell and voltage source
  • Solar cell, associated manufacturing and operating method, and device with solar cell and voltage source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 is a schematic cross-sectional view of an exemplary embodiment of a device 1 with an exemplary embodiment of a solar cell 2 and a voltage source 3 .

[0037] The solar cell 2 comprises a crystalline silicon-based semiconductor substrate 4 with highly doped n-regions 5 and p-regions 6, and an ultra-thin insulating layer 7 arranged directly on the n-region 5 and having a thickness between 5 and 10 nm. On the semiconductor substrate 4, a passivation layer 8 is arranged on the n-region side. In addition, the solar cell 2 includes an extraction electrode 9 that passes through the passivation layer 8 and contacts the n-region 5 . The gate electrode 10 is arranged on the passivation layer 8 .

[0038] In the present case, the gate electrode 10 is formed of silver, and a photoswitch of vertical structure is formed by the semiconductor substrate 4 (specifically by the n-region 5 and the insulating layer 7) and the passivation layer 8, wherein the n-region 5 forms the ...

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Abstract

Disclosed is a solar cell (2) comprising a semiconductor substrate (4) having an n-region (5) and a p-region (6), a passivation layer (8) arranged on the n-region side of the semiconductor substrate (4), an extraction electrode (9) and a gate electrode (10) passing through the passivation layer (8) and contacting the n-region (5), which are arranged on the passivation layer (8) and form an opticalswitch (8), when an external voltage is applied between the gate electrode (10) and the extraction electrode (9), the switch switches to a non-linear conductive state when the passivation layer (8) is irradiated with light (L).

Description

technical field [0001] The invention relates to a solar cell, a method of manufacturing a solar cell, a method of operating a solar cell and a device having a solar cell and a voltage source. Background technique [0002] Commercial solar cells have a semiconductor substrate with n and p regions, and can be formed, for example, from crystalline silicon material. When sunlight is irradiated, photogenerated charge carriers in the form of electrons and holes are generated. There also arise so-called hot electrons and hot holes, which cool down to ambient temperature within 1 to 10 ps due to collisions, scattering and radiative relaxation. In conventional solar cells, these hot carriers are not available for conversion into electricity. In practice, therefore, the efficiency of conventional solar cells is limited to approximately 20% to 25%. Contents of the invention [0003] The object of the present invention is to propose a relatively improved solution for photovoltaic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042H01L31/16H01L31/18H01L31/02H03K17/78
CPCH01L31/042H01L31/16H01L31/18H01L31/02002H03K17/78H01L31/02167H01L31/022425H01L31/068Y02E10/547Y02P70/50
Inventor 胡思福菲利克斯·胡胡佳洁
Owner 成都特频微电子科技发展有限公司