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A kind of mesoporous nano quantum dot perovskite solar cell and preparation method

A technology of solar cells and nano-quantum dots, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as increasing sunlight transmission paths, uneven sunlight absorption, and increasing sunlight absorption, and achieves a simple and controllable production process , Improve conversion efficiency, improve the effect of separation efficiency

Active Publication Date: 2018-05-25
太湖县市场监督检验所(太湖县功能膜检测研究院)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process is easy to cause three types of interfaces: photoanode / quantum dot interface; quantum dot / perovskite interface and photoanode / perovskite interface, these interfaces have more grain boundary defects, which will introduce recombination centers and are unevenly distributed , leading to uneven absorption of sunlight in different areas of the cell, which ultimately leads to uneven cell efficiency
[0006] In summary, there is no perovskite solar cell with a nano-flower composite structure in the existing perovskite solar cell technology, that is, it has a flower shape in appearance, the core part is spherical, and the petals and perovskite Mine contacts transmit electrons, increase the transmission path of sunlight in the battery, increase the absorption of sunlight, obtain higher sunlight absorption rate, and improve the efficiency of the battery

Method used

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  • A kind of mesoporous nano quantum dot perovskite solar cell and preparation method

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Embodiment 1

[0033] This embodiment includes the following steps:

[0034] (1) Preparation of TiO 2 dense electron transport layer

[0035]First, clean the clear FTO glass. The FTO glass with a size of 2.0×2.0cm was first cleaned with detergent to remove surface oil and particulate pollutants, then ultrasonically cleaned with deionized water, acetone and alcohol for 15 minutes, and then dried with nitrogen to remove residual organic matter on the surface of the FTO glass .

[0036] Next, using radio frequency magnetron sputtering method, in an argon atmosphere with a purity of 99.99%, control the sputtering pressure to 0.1, sputtering power to 100W, deposit at room temperature for 10 minutes, put it into an atmosphere annealing furnace for 300-500 ℃, 0.5h-2h annealing under 10 Pa gas conditions, dense TiO can be obtained on FTO 2 electron transport layer.

[0037] (2) Preparation of mesoporous nanoflower ZnS quantum dot layer

[0038] First, take zinc acetate, Na 2 S 2 o 3 , EDTA,...

Embodiment 2

[0046] This embodiment includes the following steps:

[0047] (1) Preparation of ZnO dense electron transport layer

[0048] First, clean the transparent ITO glass. The ITO glass with a size of 3.0×3.0cm was first cleaned with detergent to remove surface oil and particle pollutants, then ultrasonically cleaned with deionized water, acetone and alcohol for 15 minutes, and then dried with nitrogen to remove residual organic matter on the surface of the ITO glass .

[0049] Then the ZnO dense electron transport layer was prepared by radio frequency magnetron sputtering (RF), the ITO glass substrate was placed in the sputtering chamber, and the pressure of the sputtering chamber was pumped to 2.5×10 -4 Pa, the argon gas with a purity of 99.9% was introduced, and after two washes, the sputtering pressure was controlled at 0.1Pa, and the sputtering power was 500W. A dense ZnO electron transport layer was obtained on ITO.

[0050] (2) Preparation of mesoporous nanoflower ZnS quan...

Embodiment 3

[0059] This embodiment includes the following steps:

[0060] (1) Preparation of ZnO dense electron transport layer

[0061] First, clean the transparent ITO glass. The ITO glass with a size of 3.0×3.0cm was first cleaned with detergent to remove surface oil and particle pollutants, then ultrasonically cleaned with deionized water, acetone and alcohol for 15 minutes, and then dried with nitrogen to remove residual organic matter on the surface of the ITO glass .

[0062] Then the ZnO dense electron transport layer was prepared by radio frequency magnetron sputtering (RF), the ITO glass substrate was placed in the sputtering chamber, and the pressure of the sputtering chamber was pumped to 2.5×10 -4 Pa, the argon gas with a purity of 99.9% was introduced, and after two washes, the sputtering pressure was controlled at 0.1Pa, and the sputtering power was 500W. A dense ZnO electron transport layer was obtained on ITO.

[0063] (2) Preparation of mesoporous nanoflower ZnS quan...

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Abstract

The invention discloses a mesoporous nanometer quantum dot perovskite solar cell and a preparation method thereof. The mesoporous ZnS nanoflower structure wrapped by PVP is prepared as the mesoporous electron transport layer of the solar cell. Since the core of the ZnS nanoflower structure Part of it is wrapped by PVP material, and the outer area is stacked into clusters by lamellar ZnS nanosheets. The lamellar petal structure is in close contact with the perovskite material, thereby increasing the contact area between the mesoporous material and the perovskite structure layer. , improve the photoelectric conversion efficiency of the battery. The PVP polymer material wrapped in the core protects the stability of the structure, and at the same time improves the dispersion of nanomaterials, making the production process simple and controllable, with low production costs and market application value.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a mesoporous nano quantum dot perovskite solar cell and a preparation method. Background technique [0002] CH based on the perovskite structure 3 NH 3 wxya 3 (X is a halogen element) material has been used as a new inorganic-organic hybrid absorbing layer material since 2009. Since the first application in solar cells, the photoelectric conversion efficiency of perovskite solar cells has gradually increased from 3.8% to 20.2%. Its market application has great prospects, and its simple preparation conditions are very beneficial to the majority of users. Self-prepared at home. Thus, users can transform from consumers of electric energy to producers of electric energy, providing more superior and cheap solutions to the increasingly urgent energy crisis. [0003] Perovskite solar cells are developed from dye-sensitized cells. Perovskite materials play a very important ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/00H01L51/42H10K99/00
CPCH10K71/12H10K30/10H10K2102/00Y02E10/549
Inventor 陈庆曾军堂叶任海陈兵
Owner 太湖县市场监督检验所(太湖县功能膜检测研究院)
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