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
CN106206956AInactive Publication Date: 2016-12-07MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

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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.
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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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