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Water-stable hybrid lead-iodine perovskite material and application thereof

A perovskite material, water-stabilized technology, applied in luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problem of high photoresponse coefficient and achieve the effect of excellent photoelectric conversion performance

Active Publication Date: 2019-07-26
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of organic-inorganic hybrid lead iodine perovskite material, and this material is made of strongly hydrophobic alkylation aromatic cation and novel inorganic (Pb 3 I 8) 2– Composed of anions, the material exhibits enhanced water, heat and light stability, which overcomes the problem of poor stability of lead-iodide perovskite materials regulated by traditional organic amine cations; therefore, it has strong stability, high photoresponse coefficient, and cycle Good sex and other advantages

Method used

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  • Water-stable hybrid lead-iodine perovskite material and application thereof
  • Water-stable hybrid lead-iodine perovskite material and application thereof
  • Water-stable hybrid lead-iodine perovskite material and application thereof

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Experimental program
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Embodiment Construction

[0019] (1) (1,1'-diethyl-[2,2'-bipyridine]-1,1'-diium)Pb 3 I 8 Synthesis

[0020] 0.115 g PbI 2 and 0.078 g of 2,2 bipyridyl into 25 mL of polytetrafluoroethylene liner, add 1 mL of HI and 4 mL of ethanol, then put the polytetrafluoroethylene liner into a stainless steel reactor, screw it tightly and place it at 190 °C oven heating. After six days of constant temperature at this temperature, it was naturally cooled to room temperature, and red columnar crystals were obtained, which was the target lead-iodine hybrid material.

[0021] (2) Water and light stability test

[0022] 30 mg of well ground (1,1'-diethyl-[2,2'-bipyridine]-1,1'-diium)Pb 3 I 8 The powder is placed in a container with a 100% humidity atmosphere or exposed to sunlight. After 60 days, the samples are collected for direct powder diffraction characterization.

[0023] (3) Photoelectric response and cycle test

[0024] 5 mg of well-ground (1,1'-diethyl-[2,2'-bipyridine]-1,1'-diium)Pb 3 I 8 The powder ...

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Abstract

The invention discloses an organic-inorganic hybrid lead-iodine perovskite material and application thereof. The organic-inorganic hybrid lead-iodine perovskite material has a structural formula of (1, 1'-diethyl-[2, 2'-bipyridine]-1, 1'-diium)Pb3I8 and composed of cations of diethyl 2, 2-bipyridine c and inorganic anions of (Pb3I8)2-; organic components are produced through in-situ alkylation ofthe cations of 2, 2-bipyridine, and the inorganic components of (Pb3I8) can be considered as a one-dimensional chain formed by connecting (Pb3I14) trinuclear clusters through six shared Pb-I bonds andhas a novel Geiser packing symbol of 3(1 / 2, -1 / 2)(1 / 2, 1 / 2). The organic-inorganic hybrid lead-iodine perovskite material is high in water stability, photostability, heat stability and photovoltaic conversion performance and can be applied as an alternative material for photoelectric detectors.

Description

technical field [0001] The invention relates to the field of inorganic-organic hybrid lead-iodine perovskite, in particular to a water-stable lead-iodine hybrid perovskite material (1,1'-diethyl-[2,2'-bipyridine]-1,1' -diium)Pb 3 I 8 Its photoelectric conversion application. Background technique [0002] In recent years, the rapid popularization and promotion of electronic information products have become an indispensable tool in personal daily life; and optoelectronic devices play a core role in daily production and electronic products used in daily life, such as notebook computers, smart phones, solar cells, and cameras. status. With the iterative upgrading of electronic products, the demand for optoelectronic devices and optoelectronic materials is not only increasing, but also more and more required; therefore, it is of extremely important practical significance to explore new optoelectronic materials and enhance their physical and chemical properties. [0003] The p...

Claims

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Application Information

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IPC IPC(8): C07D471/14C09K11/06C09K11/66H01L51/46
CPCC07D471/14C09K11/06C09K11/664H10K85/6574H10K85/30Y02E10/549
Inventor 刘广宁赵若愚许让栋王俊暖陈凤李村成
Owner UNIV OF JINAN