Hybrid solar cell, method for manufacturing same, method for forming hole transport layer

A hole transport layer, solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of deteriorating the electrical properties of polymer films, thinning polymer film thickness, complex process steps, etc. Reflection effect, increase the area of ​​the junction, the effect of improving separation and transmission efficiency

Active Publication Date: 2017-02-15
深圳市石金科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the bottom of the pyramid structure interface is relatively sharp and the gap is small, there are generally problems that PEDOT:PSS cannot cover the bottom and the contact is not good, such as figure 2 As shown, these problems are reflected in references 1 and 2
Although the increase of spin coating rate can improve this situation, but the larger spin coating rate will reduce the film thickness of the polymer and deteriorate the electrical properties of the polymer film.
In addition, some researchers have tried to coat a thin layer of small molecular polymers first, and then spin-coat macromolecular conjugated organic polymers to increase the coverage of the polymers, which not only adds new possibilities to the hybrid solar cell structure. Interface problems, and the process steps are more complicated and the cost is higher

Method used

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  • Hybrid solar cell, method for manufacturing same, method for forming hole transport layer
  • Hybrid solar cell, method for manufacturing same, method for forming hole transport layer
  • Hybrid solar cell, method for manufacturing same, method for forming hole transport layer

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Embodiment 1

[0039] In a first exemplary embodiment of the present invention, a method for forming a hole transport layer of an organic-inorganic hybrid solar cell is provided. image 3 It is a flowchart of a method for forming a hole transport layer of an organic-inorganic hybrid solar cell according to an embodiment of the present invention. Figure 4 It is a schematic longitudinal section view of an organic-inorganic hybrid solar cell according to an embodiment of the present invention. Please refer to image 3 and Figure 4 , the method for forming the hole transport layer of the organic-inorganic hybrid solar cell in this embodiment includes:

[0040] Step S102: Texturing the front side of the silicon substrate to form a pyramid structure interface;

[0041] After this step, the pyramid structure interface on the front side of the silicon substrate is as follows: figure 1 shown.

[0042] In this embodiment, the silicon substrate used is (100) crystal orientation, and the method for...

Embodiment 2

[0058] In a second exemplary embodiment of the present invention, a method for preparing an organic-inorganic hybrid solar cell is provided. Please refer to Figure 4 , the preparation method of the pyramid interface organic-inorganic hybrid solar cell of the present embodiment comprises:

[0059] Step S202: Texturing the front side of the silicon substrate to form a pyramid structure interface;

[0060] Step S204: Put the silicon substrate with the interface of the pyramid structure into a mixed solution of hydrofluoric acid and nitric acid, and perform isotropic etching to make the bottom of the pyramid structure smooth and open;

[0061] Step S206: Etching the isotropically etched silicon substrate with an alkaline solution to remove the nanoporous layer formed after isotropic etching to smooth its structure;

[0062] Step S208: removing the natural oxide layer on the surface of the pyramid structure in a diluted hydrofluoric acid solution (HF);

[0063] Step S210: therm...

Embodiment 3

[0070] In a third exemplary embodiment of the present invention, a method for preparing an organic-inorganic hybrid solar cell is provided. Please refer to Figure 4 , the preparation method of the pyramid interface organic-inorganic hybrid solar cell of the present embodiment comprises:

[0071] Step S302: Carry out isotropic etching with an acid solution on the n-type silicon substrate (100) after pyramid texture, wherein the concentration of HF is 0.5mol / L, and the concentration of HNO 3 The concentration is 7mol / L, and it is treated at room temperature for 4 minutes to make the bottom of the structure smooth and open, such as Figure 5 Scanning electron microscope image shown;

[0072] Step S304: Clean the silicon substrate after isotropic etching with deionized water, and then etch with 1mol / L KOH solution at room temperature for 60s to remove the nanoporous layer formed after isotropic etching, to smooth its structure, such as Figure 6 As shown in the scanning elect...

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Abstract

The invention provides an organic-inorganic hybrid solar cell, a preparation method thereof, and a hole transport layer forming method. Wherein, the method for forming the hole transport layer of the hybrid solar cell comprises: Step A: Carrying out texture processing to the front side of the silicon substrate to form a pyramid structure interface; Step B: treating the silicon substrate with the pyramid structure interface in hydrofluoric acid Carry out isotropic etching in the mixed solution of nitric acid, to smooth the bottom of the pyramid structure; The annealing treatment forms a p-type hole transport layer. After the present invention carries out low-cost chemical treatment on the bottom of the pyramid structure on the silicon substrate, the bottom becomes smooth and open, basically maintaining the anti-reflection effect of the pyramid, and can also ensure the conformal coverage of the conjugated organic polymer on the pyramid .

Description

technical field [0001] The invention relates to the technical field of clean energy, in particular to an organic-inorganic hybrid solar cell, a preparation method thereof, and a method for forming a hole transport layer. Background technique [0002] In recent years, with the gradual depletion of non-renewable energy, the development and utilization of clean energy has attracted widespread attention. Among them, solar cells have become the green energy with the most application potential and application value in the 21st century to deal with energy depletion due to its non-pollution, abundant sources and many other advantages. [0003] Silicon-based solar cells dominate the field of clean energy due to their high conversion efficiency, abundant material sources, non-toxicity, and long-term stability. However, due to the need to use complex high-temperature and high-vacuum production processes (such as diffusion junctions, electrode sintering, anti-reflective passivation coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/44
CPCH10K71/10H10K71/40H10K71/00Y02E10/549Y02P70/50
Inventor 杨丽霞刘尧平王燕陈伟梁会力梅增霞杜小龙
Owner 深圳市石金科技股份有限公司
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