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Preparation method for novel copper-bearing ionized perovskite thin film

A copper ion and perovskite technology, applied in the field of solar cells, can solve the problems of perovskite materials containing toxic elements and easy decomposition, and achieve the effects of reducing photovoltaic power generation costs, good stability and strong practicability

Inactive Publication Date: 2016-12-07
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a novel copper ion-containing perovskite film, which mainly solves the problem that existing perovskite materials contain toxic elements and are easily decomposed in the air

Method used

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  • Preparation method for novel copper-bearing ionized perovskite thin film
  • Preparation method for novel copper-bearing ionized perovskite thin film
  • Preparation method for novel copper-bearing ionized perovskite thin film

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Embodiment

[0033] The invention provides a perovskite thin film containing copper ions, which is mainly used in perovskite solar cells, and its chemical formula is MACu x Pb 1-x x 3 . Such as figure 1 As shown, the process of preparing this kind of copper ion-containing perovskite film is as follows:

[0034] 1. Configure copper ion-containing perovskite precursor solution

[0035] (1) CH with a concentration of 30-300 mg / mL 3 NH 3 X was dissolved in DMF (dimethylformamide) solvent and stirred to CH 3 NH 3 X is completely dissolved; said X is a halogen element (Cl, Br or I);

[0036] (2) Add 2v.%~10v.% HCl solution and mix;

[0037] (3) Add CuI with a concentration of 0.1-1mol / L to mix, and stir for 30-40 minutes;

[0038] (4) Add PbI with a concentration of 0-0.9mol / L 2 Mix and stir for 12 to 14 hours under the condition of avoiding light to obtain the copper ion-containing perovskite precursor solution.

[0039] 2. Preparation of copper ion-containing perovskite thin films ...

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Abstract

The invention discloses a preparation method for a novel copper-bearing ionized perovskite thin film. The preparation method comprises the steps that firstly, CH3NH3X (MAX) is dissolved in a DMF solvent, and stirring is carried out until CH3NH3X is dissolved completely; secondly, an HCl solution is added; thirdly, CuI is added, and stirring is carried out; fourthly, PbI2 is added, stirring is carried out under a shading condition, and a copper-bearing ionized perovskite precursor solution is obtained; fifthly, a substrate material is washed; sixthly, the washed substrate material is put in an ultraviolet ozone washing instrument to be washed; seventhly, the copper-bearing ionized perovskite precursor solution is dropped onto the substrate material, and then spe in coating is carried out; eighthly, the spin coated material is heated and then is cooled to the room temperature, and the copper-bearing ionized perovskite thin film is obtained. The prepared copper-bearing ionized perovskite thin film is good in stability, low in cost, free of toxicity and high in photoelectric conversion efficiency. The copper-bearing ionized perovskite thin film can serve as an efficient photovoltaic energy material, photovoltaic power generation cost is greatly reduced, and therefore the copper-bearing ionized perovskite thin film is suitable for being applied and popularized on a large scale.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a method for preparing a novel copper ion-containing perovskite film. Background technique [0002] In 2012, the Snaith group at the University of Oxford invented a methylamine lead iodide (MAPbI) using an organic-inorganic mixed metal halide perovskite structure. 3 ) is an all-solid-state perovskite solar cell as a light-absorbing material, which has a simple preparation process, common raw materials, and high cell conversion efficiency. The following year, "Science" listed perovskite solar cells as one of the world's top ten technological advances in 2013, and perovskite began to receive widespread attention. [0003] However, since MAPbI 3 Perovskite contains toxic Pb elements, so this also limits the development of perovskite batteries to a large extent. Based on this, Hao et al. replaced Pb with Sn and deposited MASnI in one step. 3 perovskite, thus obtaining a photo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48H01L51/44
CPCH10K30/80H10K30/00Y02E10/549
Inventor 杨丽军杨盼赵晓冲
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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