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Solar battery preparation method

A solar cell and electrode preparation technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as coating, and achieve the effects of good compatibility, reduced aspect ratio, excellent light trapping and passivation effects

Inactive Publication Date: 2018-03-30
NANCHANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of solar cell preparation method, effectively solve the coating problem of PEDOT:PSS solution in the prior art

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Embodiment Construction

[0033] The essence of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the content of the present invention is not limited thereto.

[0034] Due to the low efficiency of thin-film silicon / PEDOT:PSS heterojunction solar cells at this stage, the interface problem is one of the main reasons restricting its efficiency. The quality of the mass junction, and because the nanostructure has a larger specific surface area, there are more surface dangling bonds, and the surface recombination of photogenerated carriers is more serious. Although the interface modification layer has a high open-circuit voltage Voc for PEDOT:PSS / silicon hybrid cells, some processes still use complex coating processes and expensive vacuum systems to increase the complexity of process operation and equipment costs, which do not meet Low-cost photovoltaic development direction.

[0035] Based on this, the present invention provides a kind of ...

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Abstract

The invention discloses a solar battery preparation method. Te solar battery preparation method comprises the steps of providing monocrystal silicon wafers suitable for preparing the solar battery; enabling the monocrystal silicon wafers to be fixed and forming regular-shaped array patterns on the surfaces of the monocrystal silicon wafers; performing mixing on a PEDOT: PSS solution and a silane coupling agent to obtain a mixed solution; dropwise adding a certain amount of the mixed solution to the surfaces of the array patterns, performing spin coating uniformly and then carrying out annealing treatment; dropwise adding a certain amount of the PEDOT: PSS solution to the surfaces of the array patterns, performing spin coating uniformly and then carrying out annealing treatment; and preparing an electrode to complete solar battery preparation. The regular-pyramid-shaped array patterns are prepared on the surfaces of the monocrystal silicon wafers, so that surface defects can be reduced,depth-width ratio can be lowered, and packaging of the subsequent PEDOT: PSS solution can be performed conveniently.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for preparing a solar battery. Background technique [0002] The current world record (25.6%) for the laboratory efficiency of silicon-based solar cells is created by Panasonic Corporation of Japan, whose device structure is based on the heterojunction form of crystalline silicon / amorphous silicon thin films (HIT cells). In the HIT battery, the high-quality passivation of the single crystal silicon surface by the intrinsic amorphous silicon thin film is fully utilized, so as to obtain an ultra-high open circuit voltage (Voc=740 mV) with extremely low interface electrical loss. Drawing on the HIT structure, the new silicon-organic heterojunction solar cell combines the advantages of easy processing and low cost of organic solar cells, and also has the excellent photoelectric performance of inorganic solar cells, which has aroused great interest. The newly developed sing...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/072H01L31/18
CPCH01L31/072H01L31/1876Y02E10/50Y02P70/50
Inventor 于天宝王茜茜
Owner NANCHANG UNIV
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