A kind of perovskite solar cell and preparation method thereof

A solar cell and perovskite-type technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of inability to prepare high-quality large-area devices, difficulty in precisely controlling sublimation, and uneven PbI reaction. Effects of short time, reduced film defects, and improved film coverage

Active Publication Date: 2020-11-13
广东脉络能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is difficult to precisely control the sublimated CH 3 NH 3 The amount of I vapor, resulting in PbI 2 inhomogeneous response, especially for large area devices
[0007] The above-mentioned one-step spin coating method, continuous deposition method and steam-assisted solution method cannot prepare high-quality large-area devices. The co-evaporation method involves high vacuum, so it consumes energy and time

Method used

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  • A kind of perovskite solar cell and preparation method thereof
  • A kind of perovskite solar cell and preparation method thereof
  • A kind of perovskite solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1. Preparation of perovskite solar cells with lead acetylacetonate as lead source by simple near-space sublimation method

[0041] 1) Preparation of electron transport layer

[0042] Preparation of dense film layer:

[0043]Prepare according to the conventional method, and the compact film layer is prepared according to the method provided by the following documents: LeadIodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%, H.S.Kim, C.R.Lee, J.H.Im, K.B.Lee, T. Moehl, A. Marchioro, S. J. Moon, R. Humphry-Baker, J. H. Yum, J. E. Moser, M. Gratzel and N. G. Park, Scientific Reports, 2012, 2, 591;

[0044] The specific steps are:

[0045] The titania dense layer was prepared by spin coating, the precursor solution of the dense layer was coated on the surface of the conductive glass, and the film was spun off for 60s at a rotational speed of 2000rpm. Immediately after the end, place the film on a hot ...

Embodiment 2

[0058] Example 2. Preparation of perovskite solar cells with lead acetate as lead source by simple near-space sublimation method

[0059] According to the steps of Example 1, only the lead acetylacetonate used in step 2) was replaced with lead acetate, and the temperature used was 110°C.

[0060] In AM1.5, 100mW / cm 2 Test the J-V performance curve of the battery with KEITHLEY 4200 under light, such as image 3 As shown in , the short-circuit current density of the battery is 20.05mA / cm 2 , the open circuit voltage is 0.87V, the fill factor is 0.73, and the photoelectric conversion efficiency is 12.95%.

[0061] The preparation of perovskite solar cells by a simple near-space sublimation method can be prepared at low temperature, and the film coverage is greatly improved. It can be used to make large-area devices, providing a feasible method for future industrialization. In conclusion, the present invention can greatly reduce the production cost, which is of great significan...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof. The perovskite solar cell includes FTO, an electron transport layer, perovskite, a hole transport layer, and an electrode; wherein, the perovskite layer is prepared by a simple near-space sublimation method. The material constituting the perovskite is at least one selected from metal acetylacetonate and acetate. This method not only reduces the cost, but also can be prepared at low temperature, and the coverage of the film is also greatly improved. It can be used to make large-area devices, and provides a feasible method for future industrialization.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, and relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] Recently, organic-inorganic hybrid perovskite solar cells have been highly valued in the field of photovoltaic technology. Due to the advantages of high carrier mobility, low exciton binding energy, high absorption coefficient, and suitable band gap, perovskite materials are considered to be Ideal photovoltaic material. Benefiting from contributions from the chemistry, materials, and physics communities, the conversion efficiency of perovskite solar cells has been greatly improved from the initially reported 3.8% to the current 22.1% in just seven years. [0003] The quality of the perovskite film plays a vital role in the performance of the perovskite battery. There have been a variety of methods to improve the quality of the perovskite film, such as: one-step spin coating method, continu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48H01L51/46
CPCH10K71/16H10K85/30Y02E10/549Y02P70/50
Inventor 麦耀华张翠苓李闻哲范建东马云平李红亮
Owner 广东脉络能源科技有限公司
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