Porphyrin-modified organic-inorganic hybrid perovskite nano-film material and preparation method thereof

A technology of nano-film materials and perovskite materials, applied in the field of nonlinear optical materials, to achieve the effects of improving stability, reducing voids and impurity defects, and being easy to obtain

Pending Publication Date: 2022-01-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for the high-intensity lasers used to measure nonlinear optical effects, long-term laser irradiation can lead to faster degradation rates of perovskite materials.

Method used

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  • Porphyrin-modified organic-inorganic hybrid perovskite nano-film material and preparation method thereof
  • Porphyrin-modified organic-inorganic hybrid perovskite nano-film material and preparation method thereof
  • Porphyrin-modified organic-inorganic hybrid perovskite nano-film material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] (1), the synthesis of 5-(4-amino)-10,15,20-triphenyl zinc porphyrin (ZnP1):

[0047]

[0048] Synthesis of compound 1:

[0049] Freshly steamed pyrrole (1.34g, 0.02mmol) and benzaldehyde (2.12g, 0.02mmol) were put into a two-necked flask, and 120mL of propionic acid was added thereto, and heated to reflux at 141°C for 4h in an air environment. After the reaction was completed, the reaction liquid was cooled to room temperature, and then stood overnight at 0°C, and then filtered through a funnel to obtain a filter residue, which was washed with methanol several times to obtain Compound 1 with a yield of 0.5 g and a yield of 16%.

[0050] 1 H NMR (600MHz, Chloroform-d) δ8.85(s, 8H), 8.22(dt, J=6.5, 1.5Hz, 8H), 7.79–7.73(m, 10H), -2.79(s, 2H).

[0051] Synthesis of compound 2:

[0052] Compound 1 (0.4 g, 0.65 mol) was dissolved in 60 mL of dichloromethane and placed in an ice-water bath, and concentrated nitric acid (3.5 mL, 0.05 mol) was added dropwise to the soluti...

Embodiment 2

[0077] The porphyrins ZnP1, ZnP2, ZnP3 and ZnP4 synthesized in Example 1 of the present invention are used to modify perovskite MAPbI 3 , to obtain porphyrin-modified perovskite thin film materials, labeled as ZnP1 / MAPbI 3 , ZnP2 / MAPbI 3 , ZnP3 / MAPbI 3 and ZnP4 / MAPbI 3 thin films, and for nonlinear Z-scan testing. The specific steps are as follows:

[0078] (1) Weigh 600mg PbI 2 And 207mg MAI and a small weighing bottle, add 0.83mL DMF and 0.17mLDMSO and stir to dissolve to form a precursor solution. Then weigh again compared to PbI 2 Porphyrin molecules with a mass fraction of 0.05% are added into the precursor solution and stirred to dissolve. For ZnP4 which is insoluble, it can be dissolved by ultrasonication for 30 minutes. Afterwards, the treated perovskite precursor solution was heated at 50° C. and stirred for 3-5 hours, and cooled to room temperature before spin coating.

[0079] (2) Select a glass slide as the substrate, clean it with deionized water in advan...

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Abstract

The invention relates to a porphyrin-modified organic-inorganic hybrid perovskite nano-film material and a preparation method thereof. Porphyrin molecules containing carboxyl and amino functional groups are utilized to modify organic-inorganic hybrid perovskite, and specific functional groups of the porphyrin molecules interact with defect sites contained in a perovskite structure, and the functionalized nano-film material is prepared. The porphyrin-functionalized organic-inorganic hybrid perovskite nano-film material synthesized by the invention has enhanced nonlinear optical performance in near-infrared light areas of femtosecond and nanosecond scales, which is due to the effect of porphyrin molecules and a perovskite structure, the perovskite structure is stabilized, and larger exciton binding energy is obtained. And moreover, the nonlinear optical performance is also synergistically enhanced by photoinduced charge transfer between porphyrin molecules and perovskite. Therefore, the preparation method is simple, the prepared material is good in stability and controllable in operation, and rich experience is provided for expanding the application of the perovskite film material in the nonlinear optical field.

Description

technical field [0001] The invention belongs to the technical field of nonlinear optical materials, and relates to a porphyrin-modified organic-inorganic hybrid perovskite nano-film material and a preparation method thereof. Background technique [0002] Organic-inorganic hybrid perovskite is a kind of general formula ABX 3 A new type of optoelectronic material, where A represents monovalent cations of different sizes, typically including MA + ,FA + , B represents a divalent metal cation, such as Pb 2+ ,Sn 2+ .And X represents a halogen element, such as Cl - , Br - , I - or their mixtures. Over the years, with the unique properties of perovskite materials such as long electron and hole diffusion length, long carrier lifetime, large absorption coefficient, wide absorption range, high charge mobility, low exciton binding energy, and adjustable energy bandgap, etc. , are widely used in solar cells, photodetectors, light emitting diodes and other fields. [0003] In rec...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/42H01L51/56H01L51/54H01L51/50C07D487/22
CPCC07D487/22H10K71/12H10K71/40H10K85/30H10K30/00H10K50/00Y02E10/549
Inventor张弛关子豪伏露露
OwnerTONGJI UNIV