Preparation method and application of perovskite thin film

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

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

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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

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Embodiment 1

[0039] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0040] (1) Preheating the substrate, specifically:

[0041] 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 15nm), 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 nickel oxide layer (thickness is 25nm);

[0042] Place the substrate on a heating plate to preheat, the preheating temperature is 120°C, and the preheating time is 30min.

[0043] (2) form a kind of substrate as the bottom layer, the towed film is the top layer, and a tight sandwich structure with the first solution is sandwiched between the two, specifically:

[0044] a. Configure the first solution

[0045] Solute PbI 2 Prep...

Embodiment 2

[0071] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0072] (1) Preheating the substrate, specifically:

[0073] 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 35nm), 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 nickel oxide layer (thickness is 50nm);

[0074] Place the substrate on a heating plate for preheating, the preheating temperature is 180°C, and the preheating time is 20min.

[0075] (2) form a kind of substrate as the bottom layer, the towed film is the top layer, and a tight sandwich structure with the first solution is sandwiched between the two, specifically:

[0076] a. Configure the first solution

[0077] Solute PbI 2 ...

Embodiment 3

[0088] This embodiment provides a method for preparing a perovskite light-absorbing layer for a perovskite solar cell, which specifically includes the following steps:

[0089] (1) Preheating the substrate, specifically:

[0090] The substrate is composed of a substrate and an adhesion layer attached to the substrate. The material of the substrate is glass (with a roughness of 50nm), and a conductive layer and a hole transport layer are sequentially attached to the glass. The hole transport layer is a nickel oxide layer (thickness is 100nm);

[0091] Place the substrate on a heating plate for preheating, the preheating temperature is 130°C, and the preheating time is 20min.

[0092] (2) form a kind of substrate as the bottom layer, the towed film is the top layer, and a tight sandwich structure with the first solution is sandwiched between the two, specifically:

[0093] a. Configure the first solution

[0094] Solute PbI 2 Prepare the first solution with solvent (NMP); Wh...

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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 first 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 first solution on the base is gradually exposed in an environmental medium; (3) a solvent in the first solution on the base is evaporated to obtain the base with a precursor film layer; and (4) the base with the precursor film layer is in contact with a second solution, and then the solvent is removed to prepare the perovskite thin film. 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): H01L51/42H01L51/46H01L51/48
CPCH10K71/15H10K71/12H10K85/30H10K30/451H10K30/10Y02E10/549
Inventor 韩礼元叶飞唐文涛陈汉杨旭东
Owner 上海黎元新能源科技有限公司
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