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Perovskite solar cell based on 3, 4, 9, 10-perylene tetracarboxylic dianhydride modification and manufacturing method

A perylene tetracarboxylic dianhydride, solar cell technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of low efficiency, instability and low hysteresis of perovskite, and achieve stable and efficient battery performance. The effect of strong resistance to back, moisture and light

Active Publication Date: 2020-01-10
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current research on perovskite solar cells has achieved certain results, there is no perovskite solar cell based on organic compound modification and its preparation method, which can simultaneously solve the defect states of the charge extraction interface inside and on both sides of the perovskite. Most of the problems that lead to its low efficiency, instability, and low hysteresis

Method used

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  • Perovskite solar cell based on 3, 4, 9, 10-perylene tetracarboxylic dianhydride modification and manufacturing method
  • Perovskite solar cell based on 3, 4, 9, 10-perylene tetracarboxylic dianhydride modification and manufacturing method
  • Perovskite solar cell based on 3, 4, 9, 10-perylene tetracarboxylic dianhydride modification and manufacturing method

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Embodiment 1

[0020] Embodiment one: a kind of preparation method based on 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) modified perovskite solar cell, comprises the following steps:

[0021] (1) Preparation of PTCDA modified electron transport layer

[0022] Pretreatment of FTO Conductive Glass

[0023] Cut the FTO conductive glass into square pieces. Put the conductive side up, align and stick a 1cm-wide tape along the edge to form a protection area, put it into an anti-corrosion container, pour hydrochloric acid aqueous solution (hydrochloric acid: deionized water volume ratio is 1:9) into the petri dish, and pour Sprinkle zinc powder into the corroded area until it is completely covered, and let it corrode until no more air bubbles are produced; pour off the corrosion solution after dilution, use pure water to wash away the residual acid, tear off the tape, soak it in washing powder water and wipe it off with a clean cotton cloth Tape residual glue, put the corroded glass piec...

Embodiment 2

[0035] Embodiment two: the difference between embodiment two and embodiment one is that steps (1)-(3) are different, specifically:

[0036] (1) Preparation of PTCDA modified electron transport layer

[0037] Preparation of titanium dioxide precursor solution: Prepare two vials with magnetic rotors, denoted as A and B; add a mixed solution of 2 mL of absolute ethanol and 30 μL of dilute hydrochloric acid (concentration: 1.5 mmol / L) into bottle A, and place under a magnetic Stir on a blender, add 2 mL of absolute ethanol and 300 μL tetraisopropyl titanate to bottle B, put it on a magnetic stirrer and stir for 10 seconds, then add all the solution in bottle A to it at a constant speed under stirring, cover the lid and Use sealing film to seal under stirring state, and stir for 40 minutes after sealing. Before use, it needs to stand still and only take the supernatant as TiO 2 precursor solution.

[0038] Titanium dioxide dense electron transport layer: Spin-coat 40 μL TiO on co...

Embodiment 3

[0045] Embodiment three: the difference between embodiment three and embodiment one is that steps (1)-(3) are different, specifically:

[0046] (1) Preparation of PTCDA modified electron transport layer

[0047] Preparation of titanium dioxide precursor solution: Prepare two vials with magnetic rotors, denoted as A and B; add a mixed solution of 3 mL of absolute ethanol and 40 μL of dilute hydrochloric acid (concentration: 2.5 mmol / L) to the bottle A, and place it under a magnetic Stir on a blender, add 3 mL of absolute ethanol and 400 μL tetraisopropyl titanate to bottle B, put it on a magnetic stirrer and stir for 10 seconds, then add all the solution in bottle A to it at a constant speed under stirring, cover the lid and Use sealing film to seal under stirring state, and stir for 40 minutes after sealing. Before use, it needs to stand still and only take the supernatant as TiO 2 precursor solution.

[0048] Titanium dioxide dense electron transport layer: Spin-coat 40 μL ...

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Abstract

The invention discloses a manufacturing method of a perovskite solar cell based on 3, 4, 9, 10-perylene tetracarboxylic dianhydride modification. The method comprises the steps of manufacturing a mesoporous electron transmission layer on transparent conductive glass; soaking the mesoporous electron transmission layer in a 3, 4, 9, 10-perylene tetracarboxylic dianhydride solution, washing and drying to obtain a composite electron transmission layer; dropping in a perovskite precursor solution on the composite electron transmission layer by using an anti-solvent titration method, carrying out high-speed spin coating, titrating the anti-solvent solution containing the 3, 4, 9, 10-perylene tetracarboxylic dianhydride in a spin coating process, and carrying out heating annealing to obtain a perovskite light absorption layer; coating a hole transport layer precursor solution on the perovskite light absorption layer in a spin mode to obtain a hole transport layer; and evaporating a gold electrode on the hole transport layer to obtain a perovskite solar cell. The method is simple in process and easy to operate, surface crystal grains of the manufactured perovskite solar cell are large, uniform and complete, defect states of charge extraction interfaces in an internal portion and on two sides of perovskite can be passivated at the same time, charge extraction efficiency is remarkably improved, and moisture resistance and illumination resistance capabilities are enhanced.

Description

technical field [0001] The invention relates to the field of new energy solar cell materials, in particular to a perovskite solar cell modified based on 3,4,9,10-perylenetetracarboxylic dianhydride and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid perovskite semiconductor materials (typical molecular formula ABX 3 [A=Cs + , CH 3 NH 3 + (MA) or NH=CHNH 3 + (FA); B=Pb or Sn; X=Br or I]) have high extinction coefficient, high carrier mobility, tunable direct bandgap, long carrier lifetime and electron-hole diffusion The advantages of length and significant bipolar charge transport make the energy conversion efficiency of perovskite solar cells increase rapidly from 3.8% to 25.2%, becoming the most competitive third-generation solar photovoltaic technology. However, perovskite solar cells have problems such as poor environmental stability (such as humidity, temperature and light radiation, etc.) and J-V hysteresis behavior, which lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/15H10K71/12H10K30/151Y02E10/549
Inventor 王宁刘涛袁益辉刘胤江
Owner HAINAN UNIVERSITY