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An all-inorganic perovskite nanowire cspbx 2 y and its preparation method and application

A technology of inorganic calcium and nanowires, which is applied in nanotechnology, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of poor controllability of process conditions, uneven morphology and structure, complex preparation process, etc. Conditions are easy to control, the shape is uniform, and the preparation process is simple

Active Publication Date: 2021-03-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of high cost of perovskite materials in the prior art, complex preparation process, poor controllability of process conditions, uneven morphology and structure, and provide an all-inorganic perovskite nanowire CsPbX 2 The preparation method of Y

Method used

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  • An all-inorganic perovskite nanowire cspbx <sub>2</sub> y and its preparation method and application
  • An all-inorganic perovskite nanowire cspbx <sub>2</sub> y and its preparation method and application
  • An all-inorganic perovskite nanowire cspbx <sub>2</sub> y and its preparation method and application

Examples

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Effect test

Embodiment 1

[0037] This example provides a whole inorganic calcium-titanium nanowire CSPBBR 3 . Preparation by the following preparation method:

[0038] Add 0.02 mmol of halogenated lead in a small beaker (10 mL) (PBBR) 2 ) And 0.02 mmol of halide (CSBR) and 2.0 ml DMF, stirred until completely dissolved. Pickup 2 μL of the mixed solution droplets were sealed on the silicon substrate suspended from the isopropyl alcohol, and the beaker (100 mL) was sealed, such as image 3 In an environment of 22 ° C, a total-dispersible whole inorganized calcium-titanium nanowire (CSPBBR) is obtained after 12h. 3 ).

[0039] Such as figure 1 The whole inorganic calcium-titanium nanowire made in this example is good, uniform in shape, with a length of 1.5 to 2.0 μm.

Embodiment 2

[0041] This example provides a whole inorganic calcium-titanium nanowire CSPBBR 3 . Preparation by the following preparation method:

[0042] Add 0.1 mmol of halogenated lead in a small beaker (10 mL) (PBBR) 2 ) And 0.1 mmol of halide (CSBR) and 2.0 ml DMF, stirred to completely dissolve. The 2 μl of the mixed solution droplets droplets were suspended from the isopropyl alcoholic surface, and the beaker (100 mL) was sealed, and the dispersibility of all-inorganic calcium-titanium-titanium nanometers were obtained after 12 hours of 20 ° C. CSPBBR 3 ).

[0043] Such as figure 2 The whole inorganic calcium-titanium nanowire made in this example is good, uniform in shape, with a length of 6.0 to 12.0 μm.

Embodiment 3

[0045] This example provides a whole inorganic calcium-titanium nanowire CSPBBR 2 I. In the preparation method, the halogenated lead is selected from 0.002 mmol of PBBR 2 Halogenated cesium selected 0.002 mmol of CSI, and the remaining steps were the same as in Example 1.

[0046] All inorganic calcium-titanium nani nani (CSPBBR) made by this embodiment (CSPBBR) 2 I) Dispersibility, morphology and length are similar to those of Example 1.

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Abstract

The invention relates to an all-inorganic perovskite nanowire CsPbX 2 Y and its preparation method and application. The preparation method includes the following steps: S1: PbX 2 and CsY are dissolved in solvent A to form a mixed solution; wherein, X and Y are both halogens; the solvent A is one or both of dimethyl sulfoxide or dimethylformamide; S2: the mixed solution described in S1 The solution is coated on the substrate, and the substrate is placed in a closed environment with a solvent B volatile atmosphere at 17~25°C for 12~24h, and the all-inorganic perovskite nanowires CsPbX with good dispersibility are obtained. 2 Y; the solvent B is one or more of isopropanol, n-propanol, n-butanol or cyclohexane. The preparation method provided by the invention is low in cost, simple in process, and easy to control the conditions, and the obtained all-inorganic perovskite nanowire CsPbX 2 Y has uniform shape, good dispersion, high crystal quality and can be used as a potential laser material in photodetectors or lasers.

Description

Technical field [0001] The present invention belongs to the field of inorganic nani, which specifically involves a whole inorganic calcium-titanium mine nanowire CSPBX 2 Y and its preparation method and application. Background technique [0002] The perovskite material has a huge application value with its excellent and unique optical and electrical properties, which can be applied to a photovoltaic detector, a laser, or the like. The prior art synthetic calcium and titanium mine material is composed using chemical vapor deposition or high temperature thermal solution. Its synthesis equipment is expensive, complicated synthesis process, and the process conditions are not controllable, and the structural structure is uneven, which is limited. Further application of the sample. [0003] Therefore, there is a need to develop a cost of low cost, simple preparation process, and have a cophenium-titanium-titanium-structured domain of structural shapes, to advance its further applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/02B82Y40/00
CPCB82Y40/00H01L21/02603
Inventor 周张凯蒋丽
Owner SUN YAT SEN UNIV
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