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A kind of perovskite solar cell based on 3,4,9,10-perylenetetracarboxylic dianhydride modification and preparation method

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

Active Publication Date: 2021-01-12
HAINAN UNIV
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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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  • A kind of perovskite solar cell based on 3,4,9,10-perylenetetracarboxylic dianhydride modification and preparation method
  • A kind of perovskite solar cell based on 3,4,9,10-perylenetetracarboxylic dianhydride modification and preparation method
  • A kind of perovskite solar cell based on 3,4,9,10-perylenetetracarboxylic dianhydride modification and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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, stir on a magnetic stirrer for 10 s, 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 TiO on conductive...

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Abstract

The invention discloses a method for preparing a perovskite solar cell modified based on 3,4,9,10-perylenetetracarboxylic dianhydride, which comprises preparing a mesoporous electron transport layer on a transparent conductive glass; Soak in 3,4,9,10-perylenetetracarboxylic dianhydride solution, wash and dry to obtain a composite electron transport layer; use anti-solvent titration method to drop perovskite precursor solution on the composite electron transport layer for high-speed spin coating, and then Titrate the anti-solvent solution containing 3,4,9,10-perylenetetracarboxylic dianhydride during the spin coating process, heat and anneal to obtain the perovskite light-absorbing layer; spin-coat the precursor solution of the hole transport layer on the perovskite light-absorbing layer to obtain Hole transport layer; perovskite solar cells are obtained by evaporating gold electrodes on the hole transport layer. This method is simple in process and easy to operate. The surface grains of the prepared perovskite solar cells are large and uniform and complete, and can simultaneously passivate perovskite The defect state of the charge extraction interface inside and on both sides of the mine can significantly improve its charge extraction efficiency and enhance its resistance to moisture and light.

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 Patents(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 UNIV