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Laminated solar cell and preparation method thereof

A technology for stacking solar cells and batteries, applied in the field of solar cells, can solve the problems of inability to be widely promoted, limited requirements for bottom cell types, and narrow application range of bottom cells, and achieves the effect of simplifying the cell structure and reducing the manufacturing cost.

Pending Publication Date: 2021-06-11
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Generally speaking, the perovskite top solar cell needs to prepare electron transport layer and hole transport layer, so the tandem solar cell can only be N-P-N-i-P or P-N-P-i-N from the bottom to the top, and there are strict restrictions on the type requirements of the bottom cell, which leads to The scope of application of the bottom battery is narrow and cannot be widely promoted

Method used

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  • Laminated solar cell and preparation method thereof
  • Laminated solar cell and preparation method thereof
  • Laminated solar cell and preparation method thereof

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preparation example Construction

[0081] In another specific embodiment, the present invention provides a preparation method of the above-mentioned tandem solar cell, and the preparation method includes:

[0082] A composite layer 2, a perovskite layer 3, a buffer layer 4, a conductive layer 5, a metal electrode layer and an antireflection layer 6 are sequentially prepared on the surface of the crystalline silicon substrate 1, and a metal electrode 7 is connected to the metal electrode layer.

[0083] Among them, the composite layer 2 is prepared by plasma-enhanced chemical vapor deposition method, atomic layer deposition method, magnetron sputtering method, solution method and thermal evaporation method; the perovskite layer 3 is prepared by spin coating method, spray pyrolysis method, thermal Prepared by evaporation method, blade coating method, coating method or printing method; buffer layer 4 is prepared by atomic deposition method, plasma-enhanced chemical vapor deposition method, spin coating method, sput...

Embodiment 1

[0085] This embodiment provides a tandem solar cell, and the tandem solar cell such as figure 1 As shown, it includes a crystalline silicon substrate 1, a composite layer 2, a perovskite layer 3, a buffer layer 4, a conductive layer 5, a metal electrode layer and an antireflection layer 6 that are stacked and closely attached in sequence, and the surface of the metal electrode layer is also provided with There are metal electrodes 7 .

[0086] The crystalline silicon substrate 1 is homogeneous crystalline silicon, the thickness of the composite layer 2 is 100 nm, the thickness of the perovskite layer 3 is 500 m, the thickness of the buffer layer 4 is 2 nm, the thickness of the conductive layer 5 is 100 nm, and the thickness of the metal electrode layer is 60 nm, and the thickness of the antireflection layer 6 is 150 nm.

[0087] This embodiment also provides a preparation method of the above-mentioned tandem solar cell, and the preparation method specifically includes the fol...

Embodiment 2

[0095] This embodiment provides a tandem solar cell, and the tandem solar cell such as figure 1 As shown, it includes a crystalline silicon substrate 1, a composite layer 2, a perovskite layer 3, a buffer layer 4, a conductive layer 5, a metal electrode layer and an antireflection layer 6 that are stacked in sequence and closely attached, and the surface of the metal electrode layer is also provided with There are metal electrodes 7 .

[0096] The crystalline silicon substrate 1 is heterogeneous crystalline silicon, the thickness of the composite layer 2 is 50 nm, and the material of the composite layer 2 is nanocrystalline silicon. The thickness of the perovskite layer 3 is 400 nm, and the chemical formula of the perovskite material used in the perovskite layer 3 is CsPbI 3 . The thickness of the buffer layer 4 is 5 nm, and the material of the buffer layer 4 is molybdenum oxide. The thickness of the conductive layer 5 is 150 nm, and the material of the conductive layer 5 i...

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Abstract

The invention provides a laminated solar cell and a preparation method thereof. The laminated solar cell comprises a crystalline silicon substrate, a perovskite layer, a buffer layer, a conductive layer, a metal electrode layer and an anti-reflection layer which are sequentially laminated and tightly attached to one another; and the surface of the metal electrode layer is provided with a metal electrode. According to the laminated solar cell provided by the invention, an electron transport layer and a hole transport layer are omitted, the structure of the cell is simplified; and the preparation process of partial functional layers is omitted, so that the overall manufacturing cost of the cell is further reduced.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a laminated solar cell and a preparation method thereof. Background technique [0002] Solar photovoltaic power generation has developed rapidly due to its advantages of safety and reliability, less geographical restrictions, and easy integration with buildings. If it can be applied to large-scale power generation, it is necessary to reduce the production cost and at the same time improve the photoelectric conversion efficiency of the solar cell. Due to its advantages of high efficiency and low price, low temperature preparation, high open voltage and good stability, silicon heterojunction cells have developed rapidly and have a wide absorption spectrum (300-1200nm), but because of their low utilization rate of short-wavelength, high-energy light absorption and limit efficiency. Perovskite solar cells have developed rapidly in recent years due to their low cost, high efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48H01L31/074H01L31/18
CPCH01L31/074H01L31/18H10K30/15H10K30/151H10K30/10H10K30/152Y02E10/549Y02P70/50
Inventor 夏锐陈艺绮王尧刘成法邹杨陈达明陈奕峰
Owner TRINA SOLAR CO LTD
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