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Double perovskite Cs2AgSbBr6 nanocrystal, synthesis and application thereof

A double perovskite, nanocrystal technology for applications in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2020-06-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the double perovskite Cs based on positive monovalent Ag and positive trivalent antimony (Sb) 2 AgSbBr 6 not yet reported

Method used

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  • Double perovskite Cs2AgSbBr6 nanocrystal, synthesis and application thereof
  • Double perovskite Cs2AgSbBr6 nanocrystal, synthesis and application thereof
  • Double perovskite Cs2AgSbBr6 nanocrystal, synthesis and application thereof

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Experimental program
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Embodiment 1

[0017] Embodiment 1: Cs (OAc) (0.71mmol), Ag (OAc) (0.5mmol), Sb (OAc) 3 (0.5mmol) was dissolved in octadecene (10mL), oleic acid (2.5mL) and oleylamine (0.66mL). The mixture was stirred at 110°C under vacuum for 45 minutes. Then, the temperature was raised to 180°C under a nitrogen atmosphere, and 0.5 mL of trimethylbromosilane was quickly injected. After 30 seconds of reaction, the reactant was put into a mixture of ice and water to cool down to room temperature. Then the reactant was centrifuged at 8000 rpm for 15 minutes, and then the supernatant was poured off to keep the orange-red precipitate. The precipitate is Cs 2 AgSbBr 6 Nanocrystalline. Cs 2 AgSbBr 6 Nanocrystals can be dispersed in n-hexane or octane to form colloids.

[0018]

[0019] Table 1Cs 2 AgSbBr 6 Nanocrystal atomic coordinate data.

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PUM

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Abstract

The invention relates to a novel double-perovskite material Cs2AgSbBr6 double-perovskite nanocrystalline, and synthesis thereof, wherein Cs2AgSbBr6 nanoparticles with small size and uniform particle size distribution are prepared by adopting a colloid method, and are a novel double-perovskite material. The material has application potential in the fields of solar cells, photoelectric detectors, light-emitting display and the like.

Description

technical field [0001] The invention relates to perovskite materials, in particular to a novel double perovskite Cs 2 AgSbBr 6 Nanocrystals and their Synthesis Background technique [0002] In recent years, lead-based perovskite materials have been widely used in the research of solar cells, photodetectors, light-emitting displays and other fields, and have broad application prospects. However, the heavy metal element lead contained in it is harmful to the human body and the environment, and the lead-based perovskite has poor stability in the air, which limits its commercial production and application. Finding non-lead and stable perovskite materials has become a current research hotspot and difficulty. [0003] At present, people have begun to look for non-lead perovskite materials. As elements in the same main group as lead in the periodic table, tin and germanium have been used to develop non-lead perovskites, but the disadvantage of such materials is poor stability. ...

Claims

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Application Information

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IPC IPC(8): C01G5/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G5/006C01P2002/72C01P2004/04C01P2004/64
Inventor 韩克利杨斌
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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