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A kind of preparation method of perovskite nano rod

A nanorod, perovskite technology, applied in nanotechnology, nanooptics, nanotechnology, etc., to achieve the effect of shortening the transmission time

Active Publication Date: 2022-04-01
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microstructure of perovskite has a variety of forms, most of which are nano-dots, nanowires, nanosheets, etc., but the synthesis methods of perovskite nanorods are rarely reported.

Method used

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  • A kind of preparation method of perovskite nano rod
  • A kind of preparation method of perovskite nano rod
  • A kind of preparation method of perovskite nano rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 0.1mmol of CsCO 3 And 0.2mmol PbO mixed with 10mL of ODE and 1mL of OA, placed in a 100mL three-necked flask. Then the solution was heated to 120°C, and vacuumized at a constant temperature for 30 minutes until it was fully dissolved, and at the same time water and oxygen in the reaction system were removed.

[0033] (2) The temperature was further raised to 180°C, and 1.5mL of OLA-HI was injected, reacted for 10s, cooled with cold water, and the temperature was controlled at 80°C;

[0034] (3) Add 0.064 mmol of tetrabutylammonium fluoride (TBAF) into the flask and stir for 15 min, then let stand for 10 min. Then cool with cold water to terminate the reaction.

[0035] (4) Take out the synthesized mother liquor and place it in a centrifuge tube, centrifuge at 12000rpm for 5min, take the precipitate and dissolve it in toluene; centrifuge again, centrifuge at 8000rpm for 3min, take the supernatant to obtain a perovskite nanorod solution.

Embodiment 2

[0037] (1) 0.1mmol of CsCO 3 And 0.2mmol PbO mixed with 10mL of ODE and 1mL of OA, placed in a 100mL three-necked flask. Then the solution was heated to 120°C, and vacuumized at a constant temperature for 35 minutes until it was fully dissolved, and water and oxygen in the reaction system were removed at the same time.

[0038] (2) The temperature was further raised to 200°C, and 1.5mL of OLA-HI was injected, reacted for 10s and cooled with cold water, and the temperature was controlled at 80°C;

[0039] (3) Add 0.064 mmol of tetrabutylammonium fluoride (TBAF) into the flask and stir for 15 min, then let stand for 10 min. Then cool with cold water to terminate the reaction.

[0040] (4) Take out the synthesized mother liquor and place it in a centrifuge tube, centrifuge at 12000rpm for 5min, take the precipitate and dissolve it in toluene; centrifuge again, centrifuge at 8000rpm for 3min, take the supernatant to obtain a perovskite nanorod solution.

Embodiment 3

[0042] (1) 0.1mmol of CsCO 3 And 0.2mmol PbO mixed with 10mL of ODE and 1mL of OA, placed in a 100mL three-necked flask. Then the solution was heated to 120°C, and vacuumized at a constant temperature for 30 minutes until it was fully dissolved, and at the same time water and oxygen in the reaction system were removed.

[0043] (2) The temperature was further raised to 180°C, and 1.5mL of OLA-HI was injected, reacted for 10s, cooled with cold water, and the temperature was controlled at 80°C;

[0044] (3) Add 0.064 mmol of ethyl difluoroacetoacetate to the flask and stir for 15 min, then let stand for 10 min. Then cool with cold water to terminate the reaction.

[0045] (4) Take out the synthesized mother liquor and place it in a centrifuge tube, centrifuge at 12000rpm for 5min, take the precipitate and dissolve it in toluene; centrifuge again, centrifuge at 8000rpm for 3min, take the supernatant to obtain a perovskite nanorod solution.

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Abstract

The invention discloses a method for preparing a perovskite nanorod, which comprises the following steps: preparing a precursor, heating, adding a fluorine source, and preparing a finished product. The preparation method of the perovskite nanorod provided by the present invention can transform the perovskite nanorod from a cube to a rod shape, and realize a suitable band gap, extinction coefficient, long exciton diffusion radius and directional conduction channel.

Description

technical field [0001] The invention relates to the technical field of chemical material preparation, in particular to a method for preparing perovskite nanorods. Background technique [0002] As a new type of photoelectric material, perovskite materials can be processed and prepared by solution method. The synthesis method is simple and the cost is low. At the same time, full-color luminescence (380nm~780 nm) can be realized by adjusting the structure and its components. The luminescence has luminescence. Narrow peak, high chroma purity, high luminous efficiency, etc. [0003] One-dimensional perovskite nanorods have the advantages of suitable bandgap, extinction coefficient, long exciton diffusion radius, and oriented conductive channels, which can be used in various optoelectronic devices. The huge anisotropic emission it exhibits is also crucial for the application of polarized light sources. The microstructure of perovskite has a variety of forms, mostly nanodots, nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G21/16C09K11/66B82Y20/00B82Y40/00
CPCC01G21/16C09K11/665B82Y20/00B82Y40/00C01P2002/34C01P2004/16C01P2004/64C01P2006/60C01P2004/04
Inventor 王嘉谦戴妤珺嵇裕崔浩申浩然黄威兰涛陈宇晖黄淑琴沈炜陈淑芬
Owner NANJING UNIV OF POSTS & TELECOMM
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