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Two-dimensional double-layer DJ type perovskite constructed by aromatic amine, and preparation method and application thereof

An aromatic amine and perovskite material technology, applied in the field of photoelectric detection, can solve problems such as performance attenuation, and achieve the effects of low cost, high sensitivity and high thermodynamic stability

Pending Publication Date: 2022-04-22
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that the performance of three-dimensional perovskite decays very quickly due to the strong internal ion migration when it operates under high working voltage and strong irradiation state, the present invention provides a two-dimensional double-layer DJ-type calcium perovskite constructed of aromatic amines. Titanium ore and its preparation method and application

Method used

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  • Two-dimensional double-layer DJ type perovskite constructed by aromatic amine, and preparation method and application thereof
  • Two-dimensional double-layer DJ type perovskite constructed by aromatic amine, and preparation method and application thereof
  • Two-dimensional double-layer DJ type perovskite constructed by aromatic amine, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Pb(AC) 2 ·3H 2 O (9 mmol) was dissolved in 10 mL (45 wt.%) of HI solution. Subsequently, 10 mmol of formamidine acetate and 3 mmol of 3-aminomethylpyridine were added to the solution to obtain a red-black powder precipitate. After heating to boiling, a clear yellow solution was obtained. The above solution is gradually lowered from 75°C to 25°C at a rate of 1°C per day. After 25 days, (3AMPY)FAPb with a thickness of 2mm can be grown at room temperature. 2 I 7 Large size single crystal. The crystal structure was obtained by X-ray single crystal diffractometer analysis, such as figure 1 shown.

Embodiment 2

[0031] Pb(AC) 2 ·3H 2 O (10 mmol) was dissolved in 10 mL (45 wt.%) of HI solution. Subsequently, 12 mmol of formamidine acetate and 4 mmol of 3-aminomethylpyridine were added to the solution to obtain a red-black powder precipitate. After heating to boiling, a clear yellow solution was obtained. The above solution is gradually lowered from 75°C to 25°C at a rate of 0.5°C per day. After 35 days, (3AMPY)FAPb with a thickness of 3mm can be grown at room temperature. 2 I 7 Large size single crystal. The crystal structure was obtained by X-ray single crystal diffractometer analysis, such as figure 1 shown.

Embodiment 3

[0033] (3AMPY)FAPb 2I 7 Analysis of X-ray absorption capacity of crystal materials:

[0034] Synthetic organic-inorganic hybrid (3AMPY) FAPb 2 I 7 Crystalline materials and currently commercial CdTe, Si, α-Se and all-inorganic perovskite CsPbBr 3 Compared to (3AMPY)FAPb 2 I 7 Crystalline materials exhibit excellent absorption capabilities for X-rays.

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Abstract

The invention discloses a two-dimensional double-layer DJ type perovskite material constructed by aromatic amine, and a preparation method and application thereof, and belongs to the technical field of photoelectric detection. The objective of the invention is to solve the problem that performance degradation is very fast due to internal strong ion migration when three-dimensional perovskite operates under high working voltage and strong irradiation states at present. According to the invention, organic large cations are introduced into a three-dimensional structure to form a low-dimensional layered perovskite material, so that ion migration in perovskite can be effectively inhibited, and meanwhile, good semiconductor performance can also be ensured by a proper number of inorganic layers. In a two-dimensional perovskite system, the stability and the carrier transport performance of DJ type perovskite are better than those of RP type perovskite, and a high-quality and large-volume multilayer DJ hybrid perovskite material and commercial application thereof are provided.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a two-dimensional double-layer DJ type perovskite constructed of aromatic amine, a preparation method and application thereof. Background technique [0002] Organic-inorganic perovskite materials have achieved great success in the field of optoelectronic devices due to their high light absorption coefficient, suitable band gap, and excellent semiconductor transport properties. In particular, three-dimensional hybrid perovskite materials have made remarkable achievements in the field of high-energy ray (X, γ-ray) detection. However, when the three-dimensional perovskite reported so far operates under high working voltage and strong irradiation state, due to the strong internal ion migration, the performance decays very quickly, which seriously hinders its further development and application. One of the major challenges facing device development. There...

Claims

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Application Information

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IPC IPC(8): C07D213/74C07C257/12H01L51/46H01L51/42
CPCC07D213/74C07C257/12C07B2200/13H10K85/60H10K85/654H10K30/10Y02E10/549
Inventor 符冬营侯坐铭陈卓
Owner SHANXI UNIV
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