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Preparation method of luminescence tin halide perovskite colloid nano-crystals

A technology of perovskite and nanocrystals, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high toxicity of organophosphorus and limited research development, and achieve the effect of simple and easy-to-operate preparation method

Inactive Publication Date: 2017-02-01
南京紫同纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the organophosphorus introduced in this method is highly toxic, and the tin in it is +2, which is easy to oxidize, and the operating environment needs to be strictly controlled, which limits the development of related research.

Method used

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  • Preparation method of luminescence tin halide perovskite colloid nano-crystals
  • Preparation method of luminescence tin halide perovskite colloid nano-crystals
  • Preparation method of luminescence tin halide perovskite colloid nano-crystals

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Experimental program
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Effect test

Embodiment 1

[0036] First prepare the cesium precursor solution cesium oleate: take 0.8mmol (1.3g) of cesium carbonate powder, 4mL of oleic acid and 16mL of octadecene, mix them, remove water and oxygen at 120°C for 30min, and under the condition of nitrogen protection, Heat to 150°C until the cesium carbonate is fully dissolved to obtain a cesium oleate solution with a concentration of 0.4M. Before hot injection, it needs to be heated and dissolved before use. The heating temperature is about 100°C.

[0037] Take 7mL of octadecene solution and 0.4mmol (250mg) of SnI4, put them in a three-necked flask, and vacuumize the mixture at 100°C to remove water and oxygen for 1h.

[0038] Preparation of organic ligands: Take a mixed solution of 2 mL of oleic acid and 2 mL of oleylamine in another flask and vacuumize at 120° C. to remove water and oxygen for 1 hour to obtain an organic ligand solution. After removing water and oxygen, fill the flask with nitrogen protection, take 2mL of organic lig...

Embodiment 2

[0040] First prepare the cesium precursor solution cesium oleate: take 0.8mmol (1.3g) of cesium carbonate powder, 4mL of oleic acid and 16mL of octadecene, mix them, remove water and oxygen at 120°C for 30min, and under the condition of nitrogen protection, Heat to 150°C until the cesium carbonate is fully dissolved to obtain a cesium oleate solution with a concentration of 0.4M. Before hot injection, it needs to be heated and dissolved before use. The heating temperature is about 100°C.

[0041] Take 7mL octadecene solution and 0.4mmol (250mg) of SnI 4 , placed in a three-necked flask, and the mixture was vacuumed at 100°C to remove water and oxygen for 1h.

[0042] Preparation of organic ligand: 2mL of oleic acid and 2mL of oleylamine mixed solution were vacuumized in another flask at 120°C to remove water and oxygen for 1 hour to obtain an organic ligand solution. After removing water and oxygen, fill the flask with nitrogen protection, take 2mL of organic ligand solution...

Embodiment 3

[0044] First prepare the cesium precursor solution cesium oleate: take 0.8mmol (1.3g) of cesium carbonate powder, 4mL of oleic acid and 16mL of octadecene, mix them, remove water and oxygen at 120°C for 30min, and under the condition of nitrogen protection, Heat to 150°C until the cesium carbonate is fully dissolved to obtain a cesium oleate solution with a concentration of 0.4M. Before hot injection, it needs to be heated and dissolved before use. The heating temperature is about 100°C.

[0045] Take 7mL octadecene solution and 0.4mmol (250mg) of SnI 4 , placed in a three-necked flask, and the mixture was vacuumed at 100°C to remove water and oxygen for 1h.

[0046] Preparation of organic ligands: take 2 mL of oleic acid and 2 mL of oleylamine mixed solution and vacuumize in another flask at 120° C. to remove water and oxygen for 1 hour to obtain an organic ligand solution. After removing water and oxygen, fill the flask with nitrogen protection, take 2mL of organic ligand ...

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Abstract

The invention discloses a preparation method of luminescence tin halide perovskite colloid nano-crystals. The tin halide perovskite colloid nano-crystals are prepared through injecting a cesium source-containing precursor solvent to an organic ligand-containing tin halide precursor long-chain alkane solvent in a hot manner and carrying out a reaction. The tin halide perovskite colloid nano-crystals with different luminescence properties and different morphologies can be obtained through controlling the reaction time, the temperature and the concentrations and the proportions of tin and a halogen precursor. The luminescence tin halide perovskite colloid nano-crystals have the advantages of controllable dimensions, morphology and luminescence property, and no use of toxic heavy metal elements, such as lead, cadmium and mercury, or severely toxic organic phosphorus, such as tri-n-octylphosphine and tri-n-butylphosphine, are inorganic nano-crystals with good luminescence properties, and have wide application prospect in the fields of luminescence devices, flat panel display, solar batteries and field effect transistors.

Description

technical field [0001] The invention belongs to the technical field of semiconductor nanomaterial preparation, and relates to a method for synthesizing multi-morphology luminescent tin halide perovskite colloidal nanocrystals. Background technique [0002] The use of metal halide perovskite materials as new semiconductor optoelectronic materials has aroused great interest in academia and industry. The basic structure of halide perovskite is ABX 3 , where B is a divalent cation (such as Ge 2+ , Sn 2+ , pb 2+ ) is the octahedral core, the halogen atom X(F - , Cl - 、Br - or I - ) is located at the octahedral vertex to form octahedral coordination, and A is a monovalent cation (inorganic ions have K + 、Cs + 、Ru + , small organic molecules have CH 3 NH 3 + 、CH 2 NH=CH, etc.) as a balancing charge. At the same time, the deformation of the perovskite structure has cubic phase, orthorhombic phase and orthorhombic phase. Perovskite is used as the absorbing layer of so...

Claims

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Application Information

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IPC IPC(8): C01G19/00B82Y30/00B82Y40/00
CPCC01G19/006B82Y30/00B82Y40/00C01P2002/34C01P2002/72C01P2004/16C01P2004/32C01P2004/64
Inventor 邓正涛王艾菲
Owner 南京紫同纳米科技有限公司
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