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Poly-hexadine/perovskite nanocomposite film-based solar cell and preparation method

A technology of solar cells and polyacetylene, applied in the field of solar cells, can solve the problems of current density and voltage curve test hysteresis, poor stability, etc., to achieve the improvement of photoelectric performance and its stability, excellent stability, and conducive to transmission Effect

Active Publication Date: 2017-03-22
英辰新能源科技有限公司
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  • Description
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a solar cell based on polyacetylene / perovskite nanocomposite film, which can solve the problems of poor battery stability and hysteresis during the current density and voltage curve test in the prior art. Can effectively improve carrier mobility and battery conversion efficiency, improve battery stability

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preparation example Construction

[0039] The present invention also provides a method for preparing a solar cell based on polyacetylene / perovskite nanocomposite film, comprising the following steps:

[0040] 1. Prepare a transparent electrode on the substrate, clean the transparent electrode, etch the electrode pattern and then clean, dry, and UV / ozone treatment;

[0041] 2. Prepare an electron transport layer on the transparent electrode;

[0042] 3. Coating a perovskite coating solution on the surface of the electron transport layer to prepare a perovskite light-absorbing layer;

[0043] 4. Prepare a hole transport layer on the surface of the perovskite light-absorbing layer;

[0044] 5. Prepare a metal electrode on the surface of the hole transport layer.

[0045] The perovskite light-absorbing layer film is prepared by the following method: uniformly disperse the perovskite precursor material and small molecules of acetylene in a polar organic solvent to form a perovskite solution; Coating, spraying or ...

Embodiment 1

[0061] Step 1, prepare transparent electrodes:

[0062] Fluorine-doped tin oxide (FTO) conductive glass was etched into an electrode pattern, cleaned with detergent, and then ultrasonically cleaned in deionized water, absolute ethanol, acetone, and isopropanol for 10 minutes, then blown dry with nitrogen, and UV / ozone treatment for 30min.

[0063] Step 2, prepare the electron transport layer:

[0064] Using atomic layer deposition (ALD) on the surface of the transparent electrode to prepare TiO with a thickness of 25nm 2 electron transport layer.

[0065] Step 3, preparing the perovskite light-absorbing layer:

[0066] Preparation of perovskite coating solution: equimolar ratio of PbI 2 and CH 3 NH 3 Material I was dissolved in dimethylformamide (DMF) solvent to obtain a solution with a concentration of 40wt%. After adding 1wt% ethylenediyne small molecule to react uniformly, a perovskite coating solution was prepared. The molecular formula of small molecules of acetyl...

Embodiment 2

[0074] Step 3, preparing the perovskite light-absorbing layer:

[0075] Preparation of perovskite coating solution: PbCl 2 、CH 3 NH 3 1 was dissolved in DMF solvent at a molar ratio of 3:1 to obtain a solution with a concentration of 35wt%; after adding 5wt% acetylene small molecule and reacting uniformly, the perovskite coating solution was prepared. The molecular formula of small molecules of acetylene is: NH 3 -(CH 2 )n-R 1 -X 1 -CH≡CH-X 2 -R 2 -(CH 2 )n-NH 3 , where R 1 , R 2 The substituents are the same and are ureido; X 1 、X 2 The substituents are the same, for alkylene-(CH 2 )n 1 , n 1 is 1; the value of n is 3.

[0076] Under the protection of nitrogen, the perovskite light-absorbing layer was prepared by solution spin coating on the surface of the electron transport layer, and a certain amount of perovskite coating liquid was dropped on the surface of the electron transport layer at a speed of 5000rpm for 40s, and then heated at 150°C Annealed for 3...

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Abstract

The invention provides a poly-hexadine / perovskite nanocomposite film-based solar cell and a preparation method, and belongs to the technical field of solar cells. The poly-hexadine / perovskite nanocomposite film-based solar cell comprises a substrate, a transparent electrode, an electron transport layer, a perovskite light absorption layer, a hole transport layer and a metal electrode, wherein the transparent electrode, the electron transport layer, the perovskite light absorption layer, the hole transport layer and the metal electrode are sequentially stacked on the substrate; and the perovskite light absorption layer is a poly-hexadine / perovskite nanocomposite film. According to the poly-hexadine / perovskite nanocomposite film-based solar cell, the problems of poor battery stability and hysteresis during current density and voltage curve testing in the prior art can be solved, the carrier mobility and the battery conversion efficiency can be effectively improved and the battery stability is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a solar cell based on a polyacetylene / perovskite nanocomposite film and a preparation method thereof. Background technique [0002] Converting solar energy into electrical energy is one of the important ways to solve environmental pollution and energy crisis. In recent years, new solar cells using perovskite as light-absorbing materials have developed rapidly, and the conversion efficiency has increased to 22.1% (certified efficiency). More and more scientific researchers' attention. [0003] The perovskite light-absorbing layer is the core part of perovskite solar cells, and its film-forming quality plays a decisive role in the performance of the cell. The film-forming properties of perovskite are closely related to the preparation process of perovskite. At present, the main preparation methods include solution method, vacuum deposition method, and vapor-assiste...

Claims

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Application Information

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IPC IPC(8): H01L51/44H01L51/46H01L31/18
CPCH01L31/18H10K71/00H10K30/80H10K30/88Y02E10/549Y02P70/50
Inventor 张雷李锋杨刚刘莹陈志军白雪天李英叶
Owner 英辰新能源科技有限公司
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