Curved heterojunction solar cell and manufacturing method thereof

A technology of solar cells and manufacturing methods, applied in the field of solar cells, can solve problems such as unfavorable light-absorbing layer and electrode preparation, defects introduced into cells, and limited cell efficiency, so as to solve the problem of disordered distribution of built-in electric field and inconsistent direction of charge collection, and improve Charge transport efficiency, effect of increasing interface area

Pending Publication Date: 2020-11-17
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

On the one hand, it is not conducive to the preparation of thinner light-absorbing layers and electrodes, on the other hand, the sharp-edged structure is also easy to introduce defects in the battery, thus limiting the improvement of battery efficiency

Method used

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  • Curved heterojunction solar cell and manufacturing method thereof
  • Curved heterojunction solar cell and manufacturing method thereof

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] In order to solve the problem of direct contradiction between light absorption and charge transmission efficiency in solar cells, the invention provides a curved surface heterojunction solar cell structure and a manufacturing method thereof. This structure not only has a better light-trapping effect, but also can achieve high-quality preparation of a thinner light-absorbing layer, and the curved light-trapping structure is less likely to introduce defects into the light-absorbing layer than the sharp light-trapping structure.

[0030] The invention discloses a curved surface heterojunction solar cell, comprising:

[0031] Substrate;

[0032] an array of silver nanoparticles disposed on a substrate;

[0033] Curve...

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Abstract

The invention discloses a curved-surface heterojunction solar cell and a manufacturing method thereof. The curved-surface heterojunction solar cell comprises a substrate; a silver nanoparticle array arranged on the substrate; a curved surface metal film arranged on the silver nanoparticle array and serving as a light trapping structure and a charge collecting electrode; a first carrier transmission layer arranged on the curved surface metal film; a light absorbing layer disposed on the first carrier transport layer; a second carrier transport layer disposed on the light absorbing layer; and anelectrode disposed on the second carrier transport layer. The curved surface heterostructure has a light trapping effect, and the light absorption efficiency of the light absorption layer can be improved; compared with a sharp light trapping structure, the curved surface structure does not easily cause defects into the film; the curved surface structure is beneficial to reducing the thickness ofthe light absorption layer and increasing the interface area of the heterojunction, thereby improving the charge transmission efficiency.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a curved-surface heterojunction solar cell and a manufacturing method thereof. Background technique [0002] Energy crisis and environmental pollution are two major challenges facing the world today. Solar cells can directly convert solar energy into electrical energy, providing an effective way for human society to obtain clean energy. [0003] Organic and metal halide perovskite solar cells have become a research hotspot in recent years due to their low-cost and large-area fabrication. Solar cells have experienced the development process from planar heterojunction to bulk heterojunction. The photoelectric conversion efficiency of solar cells depends on the light absorption rate of the light-absorbing layer. Generally, a certain thickness of the light-absorbing layer film is required to obtain a higher light absorption efficiency. However, limited by the exciton diffusion length an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/10H10K30/87H10K30/82H10K30/00Y02E10/549Y02P70/50
Inventor 刘孔王智杰曲胜春吴玉林岳世忠孙阳李其聪杨诚
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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