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Manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction and preparation method and application thereof

A technology of nanocrystalline and inorganic calcium, applied in the field of nanomaterials, can solve the problem of no related reports on heterostructures, and achieve the effects of good optical properties and stability, good crystallinity, and simple preparation method.

Active Publication Date: 2020-09-25
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003]However, there is no related report on the heterostructure of doped perovskite nanocrystals and Au

Method used

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  • Manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction and preparation method and application thereof
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  • Manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction and preparation method and application thereof

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Embodiment 1

[0034] Preparation of a manganese-doped pure inorganic perovskite (CsPbMnCl 3 )-Au nanocrystalline heterojunction (CsPbMnCl 3 @Au), the specific preparation method is as follows:

[0035] 1. Mix 100mg Cs 2 CO 3 Dissolve in 4mL octadecene and 0.6mL oleic acid solution, heat to 120°C under nitrogen, keep for 1h to form oleic acid-cesium precursor, set aside;

[0036] 2. Dissolve 122mg of lead chloride and 180mg of manganese chloride in 10mL of octadecene solution, add 1.6mL of oleic acid and 1.6mL of oleylamine as stabilizers, stir for 20min under nitrogen, continue heating to 120°C and keep for 30min, then Raise the temperature to 170°C and keep it for 10 minutes, then raise the temperature to 200°C and keep it for 10 minutes, then inject 1.6mL oleic acid and 1.6mL oleylamine to make the solution clear, and then inject 0.8mL of the oleic acid-cesium precursor prepared in step (1) respectively. mL, after reacting for 5s, cool in an ice bath, and finally use n-hexane and ethy...

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Abstract

The invention relates to a manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction and a preparation method and application thereof, which belong to the technical field of nano materials. According to the manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction, spherical Au particles directly grow on nanocrystalline formed by manganese-doped pure inorganic perovskite to form a heterojunction, and the heterojunction has the advantages of being good in dispersity and crystallinity, excellent in optical performance and good in optical stability and has wideapplication prospects in the fields of solar cells or photocatalysis and the like. The preparation method of the manganese-doped pure inorganic perovskite-Au nanocrystalline heterojunction has the advantages of being simple, controllable and the like, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a manganese-doped pure inorganic perovskite-Au nanocrystal heterojunction and a preparation method and application thereof. Background technique [0002] In recent years, the all-inorganic perovskite CsPbX 3 (X=I, Br, Cl) nanocrystals, as a new type of optoelectronic material, have shown great promise in the field of optoelectronics due to their high luminous efficiency, adjustable band gap, low defect density, long carrier lifetime and environmental stability. The research enthusiasm of the nanocrystal is also increasing continuously. Since 2015, researchers have changed the CsPbX 3 The surface ligands of nanocrystals, reaction temperature or reaction time, prepared CsPbX 3 Nanowires, nanospheres, nanotubes, and nanosheets. And about CsPbX 3 There are few reports on nanocrystalline heterojunctions. In 2008, the Banin laboratory invented an experimen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/072H01L31/036B81B7/00B81C1/00
CPCH01L31/072H01L31/036B81B7/00B81C1/00015Y02E10/50
Inventor 陈威威黄义唐孝生
Owner CHONGQING UNIV OF POSTS & TELECOMM