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CsPbI3 solvent engineering preparation method

A solvent and engineering technology, applied in the field of chemistry, can solve problems such as poor thermal stability, limited battery applications, and easy moisture absorption and decomposition of organic groups

Inactive Publication Date: 2019-12-31
凌周驰
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, high-efficiency and low-cost new organic-inorganic hybrid perovskite solar cells are receiving great attention, and their photoelectric conversion efficiency has initially reached the commercial level. However, traditional perovskite materials have poor thermal stability and organic groups are easy to Moisture absorption and decomposition limit the further application of the battery

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  • CsPbI3 solvent engineering preparation method

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Embodiment Construction

[0011] CsPbI3 The method for solvent engineering preparation comprises the following steps:

[0012] (1) CsPbI 3 Solution configuration: weigh 0.5 mmol of CsI and 0.5 mmol of PbI respectively 2 , dissolved it together with 1 mL of DMF (N,N-dimethylamide), and continued to stir for 30 min to obtain a light yellow solution, then added a small amount of HI acid (57 wt%) with a pipette, and continued to stir for 2 h , to give yellow CsPbI 3 Solution, filter the above solution with a polytetrafluoroethylene filter with a 0.22 μm pore size;

[0013] (2) One-step solution method preparation of CsPbI3 thin film: Spin-coat the CsPbI3 solution after aging for 0 h on glass or FTO glass and other substrates, the rotation speed is 2000 rpm, the spin-coating time is 30 s, and then the substrate is placed at 100 ℃ Dry on a heated table for 10 min to obtain a CsPbI3 film;

[0014] (3) Solvent engineering preparation of CsPbI3 thin film:

[0015] Spin-coat the CsPbI3 solution aged for 48 ...

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Abstract

The invention provides a CsPbI3 solvent engineering preparation method in the field of chemistry, which comprises the following steps of: (1) preparing a CsPbI3 solution, (2) preparing a CsPbI3 thin film by a one-step solution method, and (3) carrying out solvent engineering preparation on the CsPbI3 thin film. The thermal stability of the battery is improved.

Description

technical field [0001] The invention belongs to the field of chemistry, in particular to CsPbI 3 Methods of solvent engineering preparation. Background technique [0002] At present, high-efficiency and low-cost new organic-inorganic hybrid perovskite solar cells are receiving great attention, and their photoelectric conversion efficiency has initially reached the commercial level. However, traditional perovskite materials have poor thermal stability and organic groups are easy to Moisture absorption and decomposition limit the further application of the battery. In the process of preparing the battery, the materials to be used, methylamine bromide, methylammonium iodide or stannous iodide, play a vital role in the preparation of the battery. Contents of the invention [0003] Aiming at the defects in the prior art, the object of the present invention is to overcome the deficiencies in the above prior art, and provide a method for CsPbI3 solvent engineering preparation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/12H10K30/10H10K30/80Y02E10/549
Inventor 凌周驰
Owner 凌周驰