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Perovskite-type solar battery and preparation method thereof

A solar cell, 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, uneven reaction of PbI, and difficulty in accurately controlling sublimation. Short time, reduced film defects, time saving effect

Active Publication Date: 2018-05-04
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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  • Perovskite-type solar battery and preparation method thereof
  • Perovskite-type solar battery and preparation method thereof
  • Perovskite-type solar battery 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-type solar battery and a preparation method thereof. The perovskite-type solar battery comprises an FTO, an electronic transmission layer, perovskite, a hole transmission layer and an electrode. The transmission layer is prepared by using a simple near-space sublimation method. The material for forming the perovskite is selected from at least one of acetylacetone metal salt and acetate. According to the preparation method, the cost is reduced, low-temperature preparation can also be achieved, the covering degree of thin film is also greatly increased, the perovskite-type solar battery can be used for production of large-area devices, and a feasible method is provided for prospective 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 Applications(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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