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All-inorganic perovskite layer and preparation method and application thereof

An inorganic calcium and perovskite technology, applied in the field of solar cells, can solve the problems of poor stability of perovskite cells, unstable perovskite phase, and easy decomposition of organic components, so as to inhibit the migration of ions, maintain stability, and improve The effect of stability

Inactive Publication Date: 2019-08-23
北京宏泰创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the organic components in the perovskite material are easy to decompose, and the perovskite phase is unstable at normal temperature, resulting in poor stability and easy aging of the perovskite battery. In order to overcome the defects of the prior art , the present invention provides an all-inorganic perovskite layer, a preparation method and a perovskite solar cell, which can realize the stability of the perovskite phase at room temperature, which is conducive to improving the stability of the solar cell

Method used

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  • All-inorganic perovskite layer and preparation method and application thereof

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preparation example Construction

[0041] The present invention also discloses a method for preparing an all-inorganic perovskite layer doped with a stabilizer as described above, comprising the following steps:

[0042] 1) Prepare an all-inorganic perovskite precursor solution;

[0043] 2) adding a stabilizer to the all-inorganic perovskite precursor solution to obtain a precursor stabilizer mixed solution;

[0044] 3) Prepare the all-inorganic perovskite layer by any one of the processing methods of spin coating, scraping coating, or spraying the mixed solution of the precursor stabilizer.

[0045] Wherein, the concentration of the stabilizer is 5mg / mL-12mg / mL, within this range, the stabilizer can better inhibit the migration of halide ions, stabilize the perovskite phase, and improve the stability of the perovskite battery.

[0046] In the process of spin coating, scraping coating or spraying the precursor stabilizer mixed solution, an anti-solvent extraction step can also be carried out to improve the fil...

Embodiment 1

[0065] Such as figure 1 The structural diagram of the perovskite / silicon heterojunction solar tandem cell shown, including the first back electrode layer, the first transparent conductive layer, the silicon heterojunction layer, the tunneling layer, the electron transport layer, the calcium Titanium ore layer, hole transport layer, inorganic protective layer, second transparent conductive layer, second back electrode layer; the structure of the silicon heterojunction layer is as follows image 3 As shown, it includes an N-type amorphous silicon layer, a first intrinsic amorphous silicon layer, an N-type monocrystalline silicon layer, a second intrinsic amorphous silicon layer, and a P-type amorphous silicon layer arranged in sequence; perovskite / The specific preparation steps of the silicon heterojunction solar tandem cell are as follows:

[0066] 1) Prepare an N-type single crystal silicon layer: place the N-type single crystal silicon substrate in a KOH solution for etchin...

Embodiment 2

[0080] As in Example 1, the difference is that the concentration of phenyltrimethylammonium chloride in step 8) is 8 mg / mL.

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Abstract

The invention relates to an all-inorganic perovskite layer, and the all-inorganic perovskite layer is doped with an ammonium salt stabilizer, so that the migration of ions in a perovskite material iseffectively inhibited, and the stability of a perovskite phase is maintained. The invention further discloses a preparation method and application of the perovskite layer doped with the stabilizer. Through the doping of the stabilizer, the stability of a perovskite single-junction solar cell and the stability of a perovskite / silicon heterojunction laminated solar cell are improved, the photoelectric conversion efficiency is further improved, and the highest photoelectric conversion efficiency can reach 25.04%.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to an all-inorganic perovskite layer and its preparation method and application. Background technique [0002] Halide perovskite materials have been successfully used in optoelectronic devices such as solar cells, LEDs, lasers, and detectors due to their excellent optoelectronic properties. Since 2009, Japanese scientist Professor Miyazaka Rik first applied halide perovskite materials to solar cells, achieving a photoelectric conversion efficiency of 3.8%. In just 10 years, perovskite solar cells have achieved great success, with a photoelectric conversion efficiency as high as 23.7%, surpassing traditional CIGS, CdTe and polycrystalline silicon cells. [0003] Perovskite solar cell materials include organic-inorganic hybrid crystal materials and all-inorganic perovskite materials. In organic-inorganic hybrid materials, such as CH 3 NH 3 wxya 3 (X=Cl, Br, I), where the hali...

Claims

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Application Information

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IPC IPC(8): H01L31/032H01L31/0725H01L31/18
CPCH01L31/032H01L31/0725H01L31/18Y02E10/50Y02P70/50
Inventor 崔义乾唐泽国张倩
Owner 北京宏泰创新科技有限公司
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