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Functionalized perovskite material based on novel ionic liquid and application of functionalized perovskite material in solar cell preparing

A technology of perovskite materials and ionic liquids, applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve problems such as sensitivity, achieve improved sensitivity, good optoelectronic properties, maintain long-term stability and high efficiency sexual effect

Active Publication Date: 2017-11-10
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as an emerging material, perovskite materials also have their shortcomings, such as sensitivity to water, wider absorption of the solar spectrum, and better matching between the electron transport layer and the hole transport layer. gradually overcome

Method used

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  • Functionalized perovskite material based on novel ionic liquid and application of functionalized perovskite material in solar cell preparing
  • Functionalized perovskite material based on novel ionic liquid and application of functionalized perovskite material in solar cell preparing
  • Functionalized perovskite material based on novel ionic liquid and application of functionalized perovskite material in solar cell preparing

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A kind of ionic liquid 1-methyl-3 aminopropyl imidazolium hexafluorophosphate (APMIHPF 6 ), its preparation method is as follows:

[0049] (1) Dissolve 3.2g of 3-bromopropylamine hydrobromide in 45ml of anhydrous acetonitrile, add 0.8g of 1-methylimidazole, heat up to 60°C for 30 minutes to react, and start to heat up to the end of the reaction for 24 hours.

[0050] (2) Remove the solvent, wash three times with a mixed solution of methanol and ether with a volume ratio of 1:1, remove methanol and ether with rotary evaporation, dissolve the residue in methanol, and add saturated NaOH methanol solution dropwise to the pH of the solution= 9. The methanol was removed by rotary evaporation, and the solution after centrifuging the inorganic salt was reacted with 8.6 g of ammonium hexafluorophosphate for 1 h.

[0051] (3) Orange-red 1-methyl-3 aminopropyl imidazole hexafluorophosphate (APMIHPF) was obtained by silica gel column chromatography 6 ) ionic liquid, stored at 4°C...

Embodiment 2

[0056] Preparation of a hydrophobic ionic liquid functionalized perovskite material.

[0057] (1) Dissolve 1.5mL of 57wt% hydroiodic acid in 10mL of methanol in an ice bath and nitrogen atmosphere, and add 2.28g of 1-methyl-3 aminopropylimidazole hexafluorophosphate (APMIHPF 6 ) methanol solution of ionic liquid (1-methyl-3 aminopropyl imidazolium hexafluorophosphate (APMIHPF 6 ) ionic liquid is 4mmol), stirred and reacted for 2h. The solvent was removed by rotary evaporation of the reaction product to obtain a light yellow powder, which is the organic phase C of the perovskite material 7 h 15 N 3 HIPF 6 ;

[0058] (2) Using dimethylsulfoxide (DMSO) as solvent, prepare 5ml 0.8mol L -1 PbI 2 , adding the C obtained in the previous step 7 h 15 N 3 HIPF 6 Light yellow powder, after stirring and reacting at 60°C for 2 hours, cool the solution to room temperature to obtain a perovskite material precursor solution, and store it in a brown reagent bottle, store it in a dry...

Embodiment 3

[0061] A preparation method for constructing a perovskite solar cell based on a hydrophobic ionic liquid functionalized perovskite material, comprising the following steps:

[0062] (1) ITO electrode pretreatment: Sonicate a 1cm×3cm ITO conductive glass in an aqueous solution of detergent for 15 minutes, wash it with ultrapure water, and then sonicate it in ultrapure water, acetone, and ethanol for 15 minutes, N 2 Blow dry, seal and save for later use;

[0063] (2) Fix the ITO conductive glass after the above pretreatment on the spin coater, and put 1ml 0.8mol / L TiO 2 Precursor solution (the TiO 2 The precursor solution is an ethanol solution of isopropyl titanate) drop-coated on the ITO conductive glass, and spin-coated at a specific spin-coating speed for 40 seconds. TiO 2 The ITO conductive glass modified by the precursor solution was placed in a muffle furnace and calcined at 450 °C for 30 min, and dense TiO was prepared on the surface of the ITO conductive glass. 2 fi...

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Abstract

The invention belongs to the technical fields of solar cells, perovskite materials and photovoltaic materials, and specifically discloses a functionalized perovskite material based on novel ionic liquid and application of the functionalized perovskite material in solar cell preparing. Novel hydrophobic ionic liquid 1-methyl-N-(3-aminopropyl)-imidazole sodium hexafluorophosphate (APMIHPF6) and a preparing method thereof are introduced, and based on the combination of the novel hydrophobic ionic liquid and lead halide, a perovskite structure is formed and spin-coats dense titanium dioxide transparent thin film as a photo-anode to construct a plane heterostructure perovskite solar cell; based on a photovoltaic effect, sunlight is simulated through a xenon lamp is used as an excitation light source to achieve work and performance detection of the perovskite solar cell. Through the combination of novel hydrophobic ionic liquid 1-methyl-N-(3-aminopropyl)-imidazole sodium hexafluorophosphate (APMIHPF6) and lead halide, the perovskite structure is introduced into a perovskite material system and the prepared perovskite cell has the advantages of being convenient, simple, economical, high in stability and photoelectric conversion efficiency and the like.

Description

technical field [0001] The invention also relates to the fields of solar cells, perovskite materials, and photovoltaic technologies, and in particular to a novel hydrophobic ionic liquid 1-methyl-3 aminopropylimidazole hexafluorophosphate (APMIHPF 6 ) and the preparation of perovskite nanomaterials based on the combination of the new hydrophobic ionic liquid and lead halide and its application in perovskite solar cells. The perovskite solar cell has the advantages of convenience, simplicity, economy, strong stability, and high photoelectric conversion efficiency. Background technique [0002] The photovoltaic process refers to the process in which light causes a potential difference between a semiconductor or a junction between a semiconductor and a metal, and converts photons into electrons, thereby realizing the process of directly converting light energy into electrical energy. As an independent material with high photoelectric conversion efficiency, perovskite materials...

Claims

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Application Information

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IPC IPC(8): C07D233/61H01L51/42H01L51/46H01L51/48
CPCC07D233/61H10K71/12H10K85/654H10K30/10H10K30/00Y02E10/549
Inventor 李春涯王珏王炎英
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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