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Preparation method of novel lead halide hybrid perovskite material

A perovskite material and a new technology, applied in chemical instruments and methods, luminescent materials, lead organic compounds, etc., can solve the problems of instability hindering the application and development of hybrid halide perovskite materials, and improve the reactivity. , The effect of simple operation and quick response

Pending Publication Date: 2020-05-15
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the instability of this material has seriously hindered the further application and development of hybrid halide perovskite materials. Therefore, the synthesis of new hybrid perovskite materials with higher stability and higher energy conversion efficiency is the future development. key

Method used

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  • Preparation method of novel lead halide hybrid perovskite material
  • Preparation method of novel lead halide hybrid perovskite material
  • Preparation method of novel lead halide hybrid perovskite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Described in this embodiment is the novel lead halide hybrid perovskite material (C 4 h 9 N 2 )PbI 3 The preparation method specifically comprises the following steps.

[0021] (1) Get 0.5mmol of lead nitrate, 4mL of formic acid, 2mL of hydroiodic acid and 2mL of 1.3-propylenediamine and mix them into a 25mL high-temperature and high-pressure reactor with a polytetrafluoroethylene liner;

[0022] (2) The high-temperature and high-pressure reactor was reacted at 80°C for 72h, and then slowly cooled to room temperature at a rate of 2°C / h;

[0023] (3) The obtained product was washed three times with methanol, collected and stored in 5 mL small capsules after drying.

[0024] Single crystal structure test: Find a crystal with a suitable size among the collected crystals, stick the crystal on the target with petroleum jelly and put it into the diffractometer for testing. Mo-Ka rays ( Graphite monochromatization) was used as the radiation source for the collection o...

Embodiment 2

[0028] (1) Get 1mmol of lead nitrate, 4mL of formic acid, 2mL of hydroiodic acid and 2mL of 1.3-propylenediamine and mix them into a 25mL high-temperature and high-pressure reactor with a polytetrafluoroethylene liner;

[0029] (2) The high-temperature and high-pressure reactor was reacted at 80°C for 72h, and then slowly cooled to room temperature at a rate of 2°C / h;

[0030] (3) The obtained product was washed three times with methanol, dried and stored in a 5 mL capsule. The XRD test, single crystal structure test and thermogravimetric test were the same as in Example 1.

Embodiment 3

[0032] (1) The lead nitrate of 1.5mmol, the formic acid of 4mL, the hydroiodic acid of 2mL and the 1.3-propylenediamine of 2mL are mixed and put into 25mL high-temperature and high-pressure reactor with polytetrafluoroethylene lining;

[0033] (2) The high-temperature and high-pressure reactor was reacted at 80°C for 72h, and then slowly cooled to room temperature at a rate of 2°C / h;

[0034] (3) The obtained product was washed three times with methanol, dried and stored in a small capsule of 5 mL. The XRD test, single crystal structure test and thermogravimetric test were the same as in Example 1.

[0035] Above-mentioned embodiment shows: the novel lead halide hybrid perovskite material (C 4 h 9 N 2 )PbI 3 It has good crystal quality and a decomposition temperature of 420°C.

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Abstract

The invention discloses a preparation method of a novel lead halide hybrid perovskite material. The preparation method comprises the following steps: putting reactants: lead nitrate, hydroiodic acid,formic acid and 1.3-propane diamine into a high-pressure reaction kettle with a polytetrafluoroethylene lining, heating for 72 hours at the temperature of 80 DEG C, then slowly cooling to the room temperature at the speed of 2 DEG C / h to obtain a crystal (C4H9N2)PbI3; washing the crystal (C4H9N2)PbI3 with methanol, drying, and carrying out crystallographic data collection, an XRD test and a thermo-gravimetric test. The novel lead halide hybrid perovskite material has good crystal quality and high stability.

Description

technical field [0001] The invention relates to a novel lead halide hybrid perovskite material, which has good crystal quality and high stability. Using lead nitrate, hydroiodic acid, formic acid and 1.3-propylenediamine as reactants, a new type of lead halide hybrid perovskite material (C 4 h 9 N 2 )PbI 3 . Background technique [0002] Since entering the 21st century, human society is facing more and more serious problems such as energy depletion and environmental degradation. As a common clean, non-polluting, and abundant renewable energy, solar energy is valued by people. Among them, the use of solar cells to directly convert light energy into electrical energy is the key to solving energy and environmental problems. Therefore, making solar power generation more cost-effective and efficient is a hot field of scientific research worldwide. As a material with low preparation cost, simple process, perfect crystal structure, large number of free carriers, high lumino...

Claims

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Application Information

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IPC IPC(8): C07F7/24C09K11/06H01L51/42H01L51/46
CPCC07F7/24C09K11/06C09K2211/188H10K85/30H10K30/10Y02E10/549
Inventor 刘福臣孙迎喜赵炯鹏
Owner TIANJIN UNIVERSITY OF TECHNOLOGY