A high-efficiency and stable perovskite battery containing impermeable carbon film and its preparation method

A perovskite battery and carbon thin film technology, which is applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as entry, poor repeatability, and affecting battery stability, and achieve a good combination effect

Active Publication Date: 2019-05-03
咸阳瞪羚谷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of carbon electrode perovskite battery with a porous structure has a large contact area between the carbon electrode and the perovskite, but this method has poor repeatability and is not suitable for large-scale production.
Moreover, the pores generated by the volatilization of the solvent of the perovskite solution inside the porous structure can easily allow water and oxygen in the air to enter, affecting the stability of the battery.
Therefore, the current method still has shortcomings in preventing the solvent corrosion in the conductive paste on the electrode surface and the entry of oxygen and water molecules in the air to corrode the perovskite.

Method used

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  • A high-efficiency and stable perovskite battery containing impermeable carbon film and its preparation method
  • A high-efficiency and stable perovskite battery containing impermeable carbon film and its preparation method
  • A high-efficiency and stable perovskite battery containing impermeable carbon film and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. On the ITO substrate, dense TiO is sequentially prepared 2 Electron transport layer, FAPbI 3 perovskite thin film.

[0044] 2. On the perovskite film, a uniform and dense graphite film with a thickness of 100 nm is prepared on the perovskite film by magnetron sputtering. The carbon film color is a very light gray.

[0045] 3. On the dense graphite film, scrape a layer of commercial carbon paste with a thickness of about 15 μm by the scraper method.

[0046] 4. Place the prepared battery on a hot plate and heat for 15 minutes to evaporate the solvent. Test and record the surface morphology of the carbon film as figure 2 (a), figure 2 (b), the cross-sectional morphology of the battery is as follows figure 2 (c), figure 2 As shown in (d), it can be seen that there is a uniform and dense carbon film between the perovskite and the carbon electrode, and the morphology of the perovskite is kept intact without corrosion.

Embodiment 2

[0048] 1. On the FTO substrate, dense TiO is sequentially prepared 2 Electron transport layer, FAPbI 3 Perovskite thin films and hole transport layers.

[0049] 2. On the hole transport layer, a uniform and dense nano-carbon film with a thickness of 5 nm is prepared on the perovskite film by magnetron sputtering.

[0050] 3. On the dense nano-carbon film, use a doctor blade method to scrape a layer of commercial carbon paste with a thickness of about 15 μm.

[0051] 4. Place the prepared battery on a hot plate and heat it for 15 minutes to volatilize the solvent, and obtain a highly efficient and stable perovskite battery containing an impermeable carbon film.

Embodiment 3

[0053] 1. On the ITO substrate, dense TiO is sequentially prepared 2 Electron transport layer, FAPbI 3 perovskite thin film.

[0054] 2. On the perovskite film, a uniform and dense nano-carbon film with a thickness of 5 μm and a uniform and dense graphene film with a thickness of 5 μm were prepared on the perovskite film by magnetron sputtering.

[0055] 3. On the dense nano-carbon film, use a doctor blade method to scrape a layer of commercial carbon paste with a thickness of about 15 μm.

[0056] 4. Place the prepared battery on a hot plate and heat it for 15 minutes to volatilize the solvent, and obtain a highly efficient and stable perovskite battery containing an impermeable carbon film.

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Abstract

The invention discloses a high-efficiency and stable perovskite battery containing an anti-permeation carbon film and a preparation method thereof, comprising a transparent conductive substrate, an electron transport layer, a perovskite film, an anti-permeation carbon film and a cathode conductive layer sequentially stacked; Or it includes a transparent conductive substrate, an electron transport layer, a perovskite film, a hole transport layer, an anti-permeation carbon film and a cathode conductive layer which are sequentially stacked. The present invention prepares a layer of impermeable carbon film on the surface of perovskite or inorganic hole transport layer. The existence of this layer of carbon film can firstly ensure the complete contact between carbon electrode and perovskite, and less electron and hole recombination; At the same time, the presence of the anti-permeation carbon film can also prevent the solvent in the cathode conductive paste and water molecules in the air from penetrating and damaging the perovskite film or the hole transport layer, thereby affecting the performance of the battery.

Description

technical field [0001] The invention relates to the fields of material science technology, thin film preparation technology and solar cell preparation technology, in particular to a perovskite cell and a preparation method thereof. Background technique [0002] With energy depletion and environmental pollution becoming more and more serious, the utilization of clean energy such as solar cells is a historical development trend, and it is also a current research hotspot. In recent years, organo-metal halides with a perovskite structure, as a light-absorbing material, have attracted great attention in the photovoltaic industry due to their excellent properties and have achieved rapid development. At present, the efficiency of this type of cell has exceeded 20%. The traditional perovskite battery is composed of a transparent conductive substrate, a semiconductor electron absorption layer, a perovskite film, a hole transport layer, and a cathode conductive layer. Among them, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48H01L51/44
CPCH10K85/30H10K30/451H10K30/81Y02E10/549
Inventor 杨冠军楚倩倩李长久李成新
Owner 咸阳瞪羚谷新材料科技有限公司
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