Thin-film solar cell of relief structure

A solar cell and embossing technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of aggravated power attenuation, adverse solar cell surface heat dissipation, etc., to reduce reflection loss, strengthen light capture ability, and reduce production costs. Effect

Pending Publication Date: 2015-04-29
雷加良
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Problems solved by technology

But its disadvantage is that various structures such as the concave "pit" are not conducive to the heat dissipation of the sol

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  • Thin-film solar cell of relief structure
  • Thin-film solar cell of relief structure
  • Thin-film solar cell of relief structure

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Experimental program
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[0017] When the incident sunlight (5) enters the surface of the solar cell with an embossed group structure through the protective film (4), reflected light (6) is generated on the surface flow channel (3), and reflection is generated on the surface of the embossed body (3) Rays (7) and secondary reflected rays (8) form diffuse reflections and repeated reflections for multiple absorptions. Thereby, the reflection loss of light is naturally reduced, the conversion rate is improved, the brightness is reduced, and light pollution is avoided.

[0018] At the same time, the embossed structure (2) of the present invention effectively strengthens the light-harvesting ability of the solar cell, reduces the complicated process of using laser or chemical methods to make the surface of the existing solar cell film "velvet", and reduces the manufacturing cost .

[0019] Furthermore, the surface flow channel (3) between the embossing bodies (2) also unblocks the discharge of hot air on th...

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Abstract

The invention discloses a thin-film solar cell of a relief structure and belongs to an innovation transformation technology of a solar cell surface structure. The relief structure is directly manufactured on the upper face of cell base body materials. A cell thin film is attached to the surfaces of a relief body and a cell surface flow channel. A cell protecting film covers the top end of the relief body. Sunlight is emitted into the surface of the cell, diffuse reflection and repeated reflection can happen for sure, accordingly, light reflection loss is greatly lowered, and light pollution which may be generated is avoided. Hot gas emission is smooth through the cell surface flow channel, power attenuation which becomes severe along with temperature rising of the cell is relieved and weakened, and solar cell performance is obviously optimized.

Description

technical field [0001] The invention relates to a thin-film solar cell with an embossed structure, which belongs to the innovation and transformation technology of the surface structure of the solar cell. Background technique: [0002] The surface of the existing solar cells is a planar structure, which leads to three adverse effects: first, the loss of light reflection is large, the light capture rate is low, and the photoelectric energy conversion rate is not high; second, the production process is complicated and the manufacturing cost is high; third, it is easy to produce Light pollution makes it inconvenient to install and use on building walls. In this regard, Chinese patent CN101017857A "A Telluride Solar Cell Consisting of Non-planar Chips" provides a non-planar structure of non-planar chips "including pit type, trench type, fence type, raindrop type, etc." But its disadvantage is that various structures such as concave "pit pits" are not conducive to heat dissipati...

Claims

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Application Information

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IPC IPC(8): H01L31/0352H01L31/048
CPCH01L31/0352Y02E10/50
Inventor 雷加良
Owner 雷加良
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