Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyfluorene-perovskite nano hybrid material and preparation method thereof

A nano-hybrid material, perovskite technology, applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve problems such as complex operation, achieve simple preparation process, increase effective conjugation length and order, carrier The effect of improving transmission efficiency

Pending Publication Date: 2019-09-06
NANJING UNIV OF POSTS & TELECOMM
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods usually use high-boiling point solvents and are complicated to operate
The introduction of high-boiling-point solvents requires high-temperature annealing during the preparation of PFO films, but high-temperature annealing can easily cause the transition from β-conformation to α-conformation in PFO

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyfluorene-perovskite nano hybrid material and preparation method thereof
  • Polyfluorene-perovskite nano hybrid material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 10 mg of poly(9,9-dioctylfluorene) (PFO) powder and put it into a clean sample bottle, then add 1 mL of toluene solvent into it, add clean magnets, and place the sample bottle on a heating pad at 45°C Fully stir on the stirrer, after the PFO is completely dissolved, a transparent and uniform PFO solution can be obtained. 2 mg of CsPbBr synthesized by thermal injection 3 Nanoparticles were added into the prepared PFO solution and ultrasonicated for 5 minutes. Then the cleaned quartz substrate was placed on a homogenizer, a small amount of the above solution was added dropwise on the quartz substrate, spin-coated at 2000rpm for 60s, and the substrate was transferred to a vacuum oven at 25°C to remove residual solvent. After the solvent is evaporated to dryness, a solution containing 20% ​​CsPbBr can be obtained 3 Nanoparticle-based polyfluorene-perovskite nanohybrid material films (named PFO-QDs).

[0026] The polyfluorene-perovskite nano-hybrid material film pre...

Embodiment 2

[0028] Weigh 10 mg of poly(9,9-dioctylfluorene) (PFO) powder and put it into a clean sample bottle, then add 1 mL of toluene solvent into it, add clean magnets, and place the sample bottle on a heating pad at 45°C Fully stir on the stirrer, after the PFO is completely dissolved, a transparent and uniform PFO solution can be obtained. Then the cleaned quartz substrate was placed on a homogenizer, a small amount of the above solution was added dropwise on the quartz substrate, spin-coated at 2000rpm for 60s, and the substrate was transferred to a vacuum oven at 25°C to remove residual solvent. The PFO film (named as PFO) can be obtained after the solvent is evaporated to dryness.

[0029] The PFO thin film that present embodiment is made carries out ultraviolet-visible light absorption test, and the result is as follows figure 2 shown. It can be seen from the figure that the PFO film has no obvious absorption peak at 435nm, indicating that there is no β conformation in the PF...

Embodiment 3

[0031] Weigh 10 mg of poly(9,9-dioctylfluorene) (PFO) powder and put it into a clean sample bottle, then add 1 mL of toluene solvent into it, add clean magnets, and place the sample bottle on a heating pad at 45°C Fully stir on the stirrer, after the PFO is completely dissolved, a transparent and uniform PFO solution can be obtained. 1 mg of CsPbBr synthesized by thermal injection 3 Nanoparticles were added into the prepared PFO solution and ultrasonicated for 5 minutes. Then the cleaned quartz substrate was placed on a homogenizer, a small amount of the above solution was added dropwise on the quartz substrate, spin-coated at 2000rpm for 60s, and the substrate was transferred to a vacuum oven at 25°C to remove residual solvent. After the solvent is evaporated to dryness, a solution containing 10% CsPbBr can be obtained 3 Nanoparticle-based Polyfluorene-Perovskite Nanohybrid Films.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyfluorene-perovskite nano hybrid material and a preparation method thereof. The polyfluorene-perovskite nano hybrid material contains a beta conformation of polyfluorene.The preparation method comprises the following steps that 1, perovskite nano-particles are added in an organic solution of the polyfluorene in different proportions, and stirring and mixing are fullyconducted; 2, a thin film is prepared through the solution, solvent is dried out, and finally the polyfluorene-perovskite nano hybrid material is obtained. Accordingly, the polyfluorene-perovskite nano hybrid material preparation process is simple and controllable, a polyfluorene-perovskite nano hybrid material film contains the beta conformation of the polyfluorene, the effective conjugation length and ordering of the polyfluorene are increased, the carrier transfer efficiency of the film is improved, and the material has the important application potential in the field of photoelectric devices.

Description

technical field [0001] The invention relates to a polyfluorene-perovskite nanometer hybrid material and a preparation method thereof, belonging to the field of photoelectric information materials. Background technique [0002] In recent years, conjugated polymer materials have received extensive attention. This conductive polymer material has excellent performance in the fields of organic light-emitting diodes (OLEDs), organic solar cells (OPVs), and organic lasers. A very important class of blue light materials in conjugated polymer materials - polyfluorene (PFs) materials due to their wide energy band, high fluorescence quantum efficiency, ideal hole mobility, good thermodynamic and chemical Stability and high solubility have been extensively studied by scientists. Poly(9,9-dioctylfluorene) (PFO) is a derivative of polyfluorene, and it is currently a blue light material with relatively commercial potential. It has various supramolecular structures, such as α-phase, α’-p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/66
CPCC09K11/06C09K11/665C09K2211/1425
Inventor 赖文勇刘昌键杜斌牛坚李祥春黄维
Owner NANJING UNIV OF POSTS & TELECOMM