Totally-inorganic halide perovskite material CsPbI3 nanotube, and preparation method and application thereof

A halide perovskite and nanotube technology, applied in the direction of inorganic chemistry, chemical instruments and methods, lead compounds, etc., can solve the problems that have not been reported, and achieve the effect of uniform shape, wide source of raw materials, and rapid heating

Active Publication Date: 2017-12-22
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, one-dimensional all-inorganic halide perovskite nanotubes have not been reported so far

Method used

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  • Totally-inorganic halide perovskite material CsPbI3 nanotube, and preparation method and application thereof
  • Totally-inorganic halide perovskite material CsPbI3 nanotube, and preparation method and application thereof
  • Totally-inorganic halide perovskite material CsPbI3 nanotube, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Mix 0.2g CsCO3, 0.6ml oleic acid, and 10ml octadecene into a three-necked flask and dry at 120°C for 1 hour, then heat up to dissolve CsCO3 to obtain a Cs-oleate solution;

[0035] (2) 0.348g PbI 2 Add to 20mL octadecene and dry at 120°C, add 2ml oleic acid and 2ml oleylamine (joint action) to dissolve PbI 2 Then be warming up to 150 ℃, add the Cs-oleic acid salt solution 1.6mL that step (1) obtains and carry out quick reaction 10 seconds, stop reaction immediately with ice bath then, cooling, obtains CsPbI 3 Nanocrystalline solution;

[0036] (3) CsPbI 3 The nanocrystal solution was transferred to a microwave quartz tube for microwave reaction at a reaction temperature of 130°C for 30 minutes; the reaction product was centrifuged at low speed and washed with n-hexane to obtain CsPbI 3 nanotube.

[0037] The CsPbI prepared in this embodiment 3 The molar ratio of Cs:Pb:I in nanotubes is 1:1:3.

[0038] The CsPbI prepared in this embodiment 3 The X-ray diffract...

Embodiment 2

[0047] Prepare CsPbI by the same raw material and steps of Example 1 3 Nanotubes, the difference is that the microwave reaction temperature is changed to 110°C, and the scanning electron microscope image of the implementation results is as follows Figure 9 As shown, CsPbI 3 Nanotubes have a high purity, uniform structure, but a narrow width.

Embodiment 3

[0049] Prepare CsPbI by the same raw material and steps of Example 1 3 Nanotubes, the difference is that the microwave reaction time is 15 minutes, the scanning electron microscope picture of the implementation result is as follows Figure 10 As shown, the average length of nanotubes is shorter than that of Example 1.

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Abstract

The invention discloses a totally-inorganic halide perovskite material CsPbI3 nanotube, and a preparation method and application thereof. The CsPbI3 nanotube is obtained by a CsPbI3 nanocrystal solution through a microwave reaction; and the molar ratio of Cs to Pb to I in the CsPbI3 nanotube is 1:(1-1.1):(3-3.3). According to the invention, the CsPbI3 nanotube prepared by a microwave method is a brand-new material, and through the method, the nanotube is prepared from perovskite for the first time. The totally-inorganic halide perovskite material CsPbI3 nanotube prepared by the method has fluorescent and photoelectric response, a high synthetic yield, uniform morphology, and high stability; the preparation method is simple and convenient, raw material sources are wide, the costs are low, heating is rapid by adopting the microwave method, and heating is uniform; and the CsPbI3 nanotube has a unique form, structure and electronic property, thus the CsPbI3 nanotube has huge application potentiality in fields such as photoelectrons.

Description

technical field [0001] The invention relates to an all-inorganic halide perovskite material, in particular to a microwave radiation method for preparing an all-inorganic halide perovskite material CsPbI 3 Nanotubes and methods of preparation and applications thereof. Background technique [0002] In recent years, the all-inorganic halide perovskite material CsPbX 3 (X=Cl,Br,I) has been found to have excellent optical and electronic properties, and has been proven to be applicable in the field of optoelectronics, including solar cells, light-emitting diodes (LEDs), nonlinear optical properties, lasers, and photodetectors. In the field of all-inorganic halide perovskite materials, Kovalenko et al. first successfully prepared CsPbX using the "hot injection-rapid cooling method". 3 nanocrystals. These unoptimized cubic nanocrystals are reported to have ultrahigh quantum fluorescence yield (PLQY) and narrow fluorescence spectrum, and the spectral wavelength can be changed by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G21/00B82Y40/00
CPCB82Y40/00C01G21/00C01P2002/34C01P2002/85C01P2004/03C01P2004/04C01P2004/13C01P2004/61C01P2004/62C01P2006/60
Inventor 熊维伟郑芬芬
Owner JIANGSU UNIV OF SCI & TECH
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