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Preparation method and application of perovskite thin film

A perovskite and thin film technology, applied in the field of solar cells, can solve problems such as scarcity of technology, and achieve the effects of good film quality, low production cost, and controllable film thickness

Active Publication Date: 2016-08-17
上海黎元新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology for preparing perovskite light-absorbing layers is still relatively rare, especially the technology that considers the cost of preparation mechanization, production time, material utilization and the quality of the prepared perovskite light-absorbing layers still needs further development.

Method used

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  • Preparation method and application of perovskite thin film
  • Preparation method and application of perovskite thin film
  • Preparation method and application of perovskite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0042] (1) Preheating the substrate, specifically:

[0043] The substrate is composed of a substrate and an adhesion layer attached to the substrate. The substrate is made of glass (with a roughness of 10nm). A conductive layer and a hole transport layer are attached to the glass in sequence. The conductive layer is SnO doped with fluorine. 2 Layer, the hole transport layer is a nickel oxide layer (thickness is 20nm);

[0044] Place the substrate on the heating plate to preheat, the preheating temperature is 220°C, and the preheating time is 30s;

[0045] (2) Form a tight sandwich structure with the substrate as the bottom layer and the dragged film as the top layer, with the perovskite precursor liquid sandwiched between the two, specifically:

[0046] a. Configure perovskite precursor liquid

[0047] Solu...

Embodiment 2

[0069] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0070] (1) Preheating the substrate, specifically:

[0071] The substrate is composed of a substrate and an adhesion layer attached to the substrate. The substrate is made of glass (with a roughness of 30nm), and a conductive layer and a hole transport layer are attached to the glass in sequence. The conductive layer is SnO doped with fluorine. 2 Layer, the hole transport layer is a titanium oxide layer (thickness is 100nm);

[0072] Place the substrate on the heating plate to preheat, the preheating temperature is 180°C, and the preheating time is 20min;

[0073] (2) Form a tight sandwich structure with the substrate as the bottom layer and the dragged film as the top layer, with the perovskite precursor liquid sandwiched between the two, specifically:

[0074] a. Configure perovskite precursor liquid

[0...

Embodiment 3

[0084] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0085] (1) Preheating the substrate, specifically:

[0086] The substrate is composed of a substrate and an adhesion layer attached to the substrate. The substrate is made of glass (with a roughness of 50nm), and a conductive layer and a hole transport layer are sequentially attached to the glass. The conductive layer is SnO doped with fluorine. 2 Layer, the hole transport layer is a titanium oxide layer (thickness is 200nm);

[0087] Place the substrate on the heating plate to preheat, the preheating temperature is 180°C, and the preheating time is 20min;

[0088] (2) Form a tight sandwich structure with the substrate as the bottom layer and the dragged film as the top layer, with the perovskite precursor liquid sandwiched between the two, specifically:

[0089] a. Configure perovskite precursor liquid

[...

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Abstract

The invention provides a preparation method and application of a perovskite thin film. The preparation method of the perovskite thin film comprises the steps as follows: (1) a tight sandwich structure which takes a base as a bottom layer and a dragged film as a top layer is formed, wherein a perovskite precursor solution is clamped between the bottom layer and the top layer; (2) the dragged film is gradually striped under a heating condition, so that the perovskite precursor solution on the base is gradually exposed in an environmental medium; and (3) a solvent in the perovskite precursor solution on the base is evaporated and then the perovskite thin film is formed on the base. The perovskite thin film prepared by the preparation method of the perovskite thin film provided by the invention has the advantages that the perovskite thin film has good film-forming property; the perovskite crystal grain sizes are controllable (100nm to 3microns); and the thin film thickness is controllable (50nm to 2microns)

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a preparation method and application of a perovskite thin film. Background technique [0002] Organic-inorganic hybrid metal ABX 3 With the characteristics of narrow band gap, high molar extinction coefficient, and high carrier mobility, solar cells based on this material are called perovskite solar cells. As a rising star in the third generation of solar cells, perovskite solar cells have developed rapidly in the past five years, and the current photoelectric conversion efficiency has reached 21%. [0003] The perovskite light-absorbing layer is the core film layer of the perovskite solar cell, and its preparation process has a decisive impact on the perovskite light-absorbing layer, and even determines the performance of the perovskite solar cell. At present, there are many problems in the process of perovskite solar cells from laboratory research to large-scale practical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48
CPCH10K71/00Y02E10/549
Inventor 韩礼元叶飞陈汉杨旭东
Owner 上海黎元新能源科技有限公司
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