CN109898235A - A kind of overstable organic inorganic hybridization perovskite fiber membrane and preparation method thereof - Google Patents
A kind of overstable organic inorganic hybridization perovskite fiber membrane and preparation method thereof Download PDFInfo
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- CN109898235A CN109898235A CN201910154120.XA CN201910154120A CN109898235A CN 109898235 A CN109898235 A CN 109898235A CN 201910154120 A CN201910154120 A CN 201910154120A CN 109898235 A CN109898235 A CN 109898235A
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Abstract
The present invention relates to a kind of overstable organic inorganic hybridization perovskite fiber membranes and preparation method thereof, belong to technical field of material.The present invention is using electrostatic spinning technique fabricated in situ CH3NH3PbX3Perovskite is nanocrystalline, and is dispersed in the thin polymer film with fiber morphology, the CH of formation3NH3PbX3/ Polymer composite membrane has high water-fast, heat-resisting, light fastness stability.The thin-film material can be widely applied to the preparation of the LED component of different-colour and colour gamut.
Description
Technical field
The present invention relates to a kind of overstable organic inorganic hybridization perovskite fiber membranes and preparation method thereof, belong to material system
Standby technical field.
Background technique
Hybrid inorganic-organic perovskite CH3NH3PbX3(X=I, Br, Cl) is due to its excellent optical property, such as high extinction
Coefficient shines continuously adjustable, high color purity etc., so that it is in solar battery, light emitting diode, laser and photodetector
Equal fields have a good application prospect.The substantive characteristics of ionic compound, so that the stability of its various aspects is than covalent
Close object want far short of what is expected, this also significantly limit it extensive use (Angew. Chem., Int. Ed. 2015,54,
8208;ACS Nano 2015,9,1955).Therefore stability (water stability, thermal stability, the oxygen of perovskite material are improved
Stability and photostability) at the precondition for realizing its large-scale application.Meanwhile patent CN106976092A and
CN106505134A describes the preparation method of LED a kind of, but complex process, it is difficult to realize large scale preparation.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned problems in the prior art, it is miscellaneous to provide a kind of overstable organic-inorganic
Change perovskite fiber membrane and preparation method thereof, the nanocrystalline water stability of obtained perovskite, thermal stability, oxidative stability
It is high with photostability.
A kind of overstable organic inorganic hybridization perovskite fiber membrane of the invention and preparation method thereof the following steps are included:
1, a kind of overstable organic inorganic hybridization perovskite fiber membrane and preparation method thereof, which is characterized in that the method packet
Include following steps:
(1) a certain amount of lead halide and halogenation methylamine are dissolved in organic solvent by heating and magnetic agitation, obtains perovskite
Precursor solution；
(2) a certain amount of polymer is added in Xiang Shangshu perovskite precursor solution, by magnetic agitation, obtains electrostatic spinning
Mixed liquor；
(3) electrostatic spinning mixed liquor is placed in syringe, prepares CH using electrostatic spinning technique3NH3PbX3/ Polymer is fine
Tie up laminated film.
Preferably, the molecular formula of lead halide is PbX2, wherein halogen X can be I, Br or Cl；The molecular formula of halogenation methylamine
For CH3NH3Y, wherein halogen Y can be I, Br or Cl.
Preferably, halide PbX2With halogenation methylamine CH3NH3The molar ratio of X is (0.6-1.2): 1.
Preferably, organic solvent used can be n,N-Dimethylformamide (DMF), n,N-dimethylacetamide
(DMAc), dimethyl sulfoxide (DMSO), one or several kinds of mixture in 1,4-butyrolactone (GBL), and perovskite with it is organic
The mass ratio of solvent are as follows: 100:(0.5 ~ 30).
Preferably, in the preparation of spinning solution presoma, the mass ratio of polymer and organic solvent is 100:(10 ~ 60).
Preferably, the polymer can be polystyrene (PS), Kynoar (PVDF), polyvinylacetate
(PVAc), polymethyl methacrylate (PMMA), polyvinylpyrrolidone (PVP), polyurethane (PU), polyether sulfone (PES) and poly-
One of vinyl chloride (PVC) or a variety of mixing；
Preferably, in electrostatic spinning process, voltage can be 5 ~ 50KV, and spinning distance (L) can be 5 ~ 50cm, and injection speed is
0.1 ~ 5ml/h(device such as Fig. 1).
The preparation of LED: resin and curing agent are mixed into obtain mixed solvent, red fluorescence powder is added, stirs evenly, is obtained glimmering
Light powder resin compound: suitable CH is taken3NH3PbX3Polymer fiber film paints resin compound in its film surface, then
It is sticked on blue chip, final curing obtains white light LED part.
Wherein, resin can be silica column and epoxy resin；Red fluorescence powder can be N630-N660, cadmium selenide amount
It is sub-, CaMoO4:Eu3+Or Gd2Mo3O9:Eu3+Middle one or several kinds of mixing.
Innovative point is method of the invention compared with prior art:
1, first passage electrostatic spinning technique of the present invention realizes fabricated in situ CH in the polymer3NH3PbX3Perovskite nanometer
It is brilliant；
2, CH prepared by the present invention3NH3PbX3/ Polymer fiber composite thin-film material has high water stability, thermostabilization
Property, oxidative stability and photostability；
Detailed description of the invention:
Electrostatic spinning experimental rig figure used in the position Fig. 1 invention embodiment 1；
Fig. 2 is CH obtained by embodiment 1 of the present invention3NH3PbBr3The scanning electron microscope (SEM) photograph of@PS fiber membrane；
Fig. 3 is CH obtained by embodiment 1 of the present invention3NH3PbBr3The fluorescence spectrum and ultraviolet-visible of@PS fiber membrane are inhaled
Receive figure；
Fig. 4 is white light LED part pictorial diagram obtained by embodiment 1 of the present invention:
Fig. 5 is white light LED part fluorescence spectra obtained by embodiment 1 of the present invention.
Fig. 6 is the gamut map of white light LED part obtained by embodiment 1 of the present invention.
Fig. 7 is the preparation-obtained CH of embodiment 2 of the present invention3NH3PbBr3The pictorial diagram of@PS fiber membrane.
Fig. 8 is the preparation-obtained CH of embodiment 3 of the present invention3NH3PbBr3The pictorial diagram of@PMMA fiber film.
Fig. 9 is CH obtained by embodiment 1 of the present invention3NH3PbBr3The stability test result of@PS fiber membrane；
Specific implementation method:
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described with reference to the attached drawings,
However, the present invention is not limited to these examples.
Embodiment 1:
By 0.2g PbBr2With 0.06g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, puts
The stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyphenyl of 1.25g is added in the above solution
Ethylene powder (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in
It in the syringe of 10ml, is then placed in electrostatic spinning apparatus, voltage 15kv is set, spinning distance L is 18cm, and metal needle is made
For anode, tinfoil paper does cathode, and injection speed 0.5ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
1mL silica column and 4ml curing agent are taken respectively, mixed solvent is mixed evenly to obtain, and are then added 0.05g's
N630 powder (Ou Baite science and technology), is mixed evenly, obtains resin compound.Then the CH of appropriate size is taken3NH3PbBr3@PS
Fiber membrane paints the resin compound of the above-mentioned preparation with a thickness of 20 μm on its surface, then is sticked to InGaN base blue chip
On, 2h is finally dried at 50 DEG C in drying box, can be prepared by white light LED part.
By the preparation-obtained CH of this example3NH3PbBr3The sem test result of@PS fiber membrane as shown in Figure 1,
The defects of film-based fibre is evenly distributed, a no beading.Fig. 2 is CH prepared by the present embodiment3NH3PbBr3The fluorescence light of@PS fiber
Spectrum and ultraviolet-visible absorption figure, it can be seen that the nanocrystalline crystallinity of bromo perovskite is high.Fig. 3 is to obtain prepared by this example
LED component pictorial diagram.Fig. 5 and Fig. 6 is respectively that the electroluminescent spectrum of white light LEDs prepared by the present embodiment and chromaticity coordinates are surveyed
Test result, it was demonstrated that LED has standard white light.Table 1 is CH prepared by the present embodiment3NH3PbBr3@PS fiber is in different condition
Under stability test, fiber is soaked in distilled water after 30 days, fluorescence intensity still keeps original 90%, and fiber is put
It sets in 95 DEG C of thermal station after 365 minutes, fluorescence intensity still keeps original 87%, fiber placed in pure oxygen after 10 days,
Its fluorescence intensity still keeps original 90%, and after the ultraviolet lamp that fiber is placed on pure 365nm lower 100 hours, fluorescence intensity is still
Keep original 90%.
Embodiment 2:
By 1g PbBr2With 0.5g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on
Stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polystyrene of 2g is added in the above solution
Powder (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in 10ml's
It in syringe, is then placed in electrostatic spinning apparatus, voltage 16kv is set, spinning distance L is 15cm, and metal needle is as sun
Pole, tinfoil paper do cathode, and injection speed 0.8ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
1mL epoxy resin and 4ml curing agent are taken respectively, mixed solvent is mixed evenly to obtain, and are then added 0.05g's
N660 powder (Ou Baite science and technology), is mixed evenly, obtains resin compound.Then the CH of appropriate size is taken3NH3PbBr3@PS
Fiber membrane paints the resin compound of the above-mentioned preparation with a thickness of 20 μm on its surface, then is sticked to InGaN base blue chip
On, 2h is finally dried at 50 DEG C in drying box, can be prepared by white light LED part.
Fig. 6 is the preparation-obtained CH of the present embodiment3NH3PbBr3The pictorial diagram of@PS fiber.Wherein, prepared film exists
After impregnating 30 days in water, fluorescence intensity stills remain in 80% or so.And 95 DEG C at a temperature of keep 250min after,
Fluorescence intensity stills remain in 75% or so.
Embodiment 3:
By 0.2g PbBr2With 0.06g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, puts
The stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the poly- first of 1.25g is added in the above solution
Base methyl acrylate (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is set
It in the syringe of 10ml, is then placed in electrostatic spinning apparatus, voltage 20kv is set, spinning distance L is 20cm, metal needle
As anode, tinfoil paper does cathode, and injection speed 0.8ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
1mL epoxy resin and 4ml curing agent are taken respectively, mixed solvent is mixed evenly to obtain, and are then added 0.05g's
N650 powder (Ou Baite science and technology), is mixed evenly, obtains resin compound.Then the CH of appropriate size is taken3NH3PbBr3@PS
Fiber membrane paints the resin compound of the above-mentioned preparation with a thickness of 20 μm on its surface, then is sticked to InGaN base blue chip
On, 2h is finally dried at 50 DEG C in drying box, can be prepared by white light LED part.
Fig. 7 is the preparation-obtained CH of the present embodiment3NH3PbBr3The pictorial diagram of@PMMA fiber.Wherein, prepared film
After impregnating 45 days in water, fluorescence intensity stills remain in 80% or so.And 100 DEG C at a temperature of keep 100min after,
Its fluorescence intensity stills remain in 85% or so.
Embodiment 4:
By 2g PbBr2With 1.2g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on
Stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyphenyl second of 0.4g is added in the above solution
Alkene powder (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in 10ml
Syringe in, be then placed in electrostatic spinning apparatus, be arranged voltage 20kv, spinning distance L be 14cm, metal needle as sun
Pole, tinfoil paper do cathode, and injection speed 2ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
1mL epoxy resin and 4ml curing agent are taken respectively, mixed solvent is mixed evenly to obtain, and the selenium of 0.05g is then added
Cadmium quantum dot (three Nan Guang electricity), is mixed evenly, obtains resin compound.Then the CH of appropriate size is taken3NH3PbBr3@PS
Fiber membrane paints the resin compound of the above-mentioned preparation with a thickness of 20 μm on its surface, then is sticked to InGaN base blue chip
On, 2h is finally dried at 50 DEG C in drying box, can be prepared by white light LED part.
Wherein, after prepared film impregnates 60 days in water, fluorescence intensity stills remain in 85% or so.And 98
After keeping 200min at a temperature of DEG C, fluorescence intensity stills remain in 70% or so.
Embodiment 5:
By 2g PbCl2With 1 g CH3NH3I is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on magnetic
Stirring at normal temperature 1h on power blender configures perovskite precursor solution.Then the polystyrene powder of 3g is added in the above solution
Last (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in the note of 10ml
In emitter, be then placed in electrostatic spinning apparatus, voltage 25kv be set, spinning distance L is 12cm, metal needle as anode,
Tinfoil paper does cathode, and injection speed 3ml/h carries out electrostatic spinning operation.The composite fiber thin film collected on tinfoil paper is placed in
In 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 30 days in water, fluorescence intensity stills remain in 90% or so.And 80
After keeping 300min at a temperature of DEG C, fluorescence intensity stills remain in 80% or so.
Embodiment 6:
By 2g PbCl2With 1.5 g CH3NH3I is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on
Stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyethylene pyrrole of 4g is added in the above solution
Pyrrolidone powder (Mw=1,300,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is set
It in the syringe of 10ml, is then placed in electrostatic spinning apparatus, voltage 25kv is set, spinning distance L is 12cm, metal needle
As anode, tinfoil paper does cathode, and injection speed 3ml/h carries out electrostatic spinning operation.The composite fibre that will be collected on tinfoil paper
Film is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 60 days in water, fluorescence intensity stills remain in 85% or so.And 100
After keeping 250min at a temperature of DEG C, fluorescence intensity stills remain in 90% or so.
Embodiment 7:
By 2g PbI2With 1.5 g CH3NH3I is put into 20ml sample bottle, and the GBL solvent of 10ml is added, is put into magneton, is placed on magnetic
Stirring at normal temperature 1h on power blender configures perovskite precursor solution.Then the polystyrene powder of 2g is added in the above solution
Last (Mw=200,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in the note of 10ml
In emitter, be then placed in electrostatic spinning apparatus, voltage 30kv be set, spinning distance L is 25cm, metal needle as anode,
Tinfoil paper does cathode, and injection speed 4ml/h carries out electrostatic spinning operation.The composite fiber thin film collected on tinfoil paper is placed in
In 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 60 days in water, fluorescence intensity stills remain in 85% or so.And 98
After keeping 200min at a temperature of DEG C, fluorescence intensity stills remain in 70% or so.
Embodiment 8:
By 4g PbBr2With 2 g CH3NH3Cl is put into 20ml sample bottle, and the DMF solvent of 8ml and the DMSO solvent of 2ml is added,
It is put into magneton, is placed on stirring at normal temperature 1h on magnetic stirring apparatus, configures perovskite precursor solution.Then it is added in the above solution
The Kynoar particle (Mw=280,000) of 2g continues stirring at normal temperature 2h, obtains spinning solution presoma.Before above-mentioned spinning solution
It drives body to be placed in the syringe of 10ml, be then placed in electrostatic spinning apparatus, voltage 40kv is set, spinning distance L is 35cm, gold
Belong to syringe needle as anode, tinfoil paper does cathode, and injection speed 2ml/h carries out electrostatic spinning operation.It is answered what is collected on tinfoil paper
Condensating fiber film is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 20 days in water, fluorescence intensity stills remain in 90% or so.And 95 DEG C
At a temperature of keep 300min after, fluorescence intensity stills remain in 80% or so.
Embodiment 9:
By 4g PbI2With 3 g CH3NH3Br is put into 20ml sample bottle, and the DMAc solvent of 8ml is added, is put into magneton, is placed on magnetic
Stirring at normal temperature 1h on power blender configures perovskite precursor solution.Then the polyacrylonitrile powder of 2g is added in the above solution
Last (Mw=140,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in the note of 10ml
In emitter, be then placed in electrostatic spinning apparatus, voltage 18kv be set, spinning distance L is 24cm, metal needle as anode,
Tinfoil paper does cathode, and injection speed 0.5ml/h carries out electrostatic spinning operation.The composite fiber thin film collected on tinfoil paper is set
In in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 40 days in water, fluorescence intensity stills remain in 82% or so.And 80
After keeping 400min at a temperature of DEG C, fluorescence intensity stills remain in 85% or so.
Embodiment 10:
By 0.8g PbBr2With 0.24g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, puts
The stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyethylene of 4g is added in the above solution
Pyrrolidinone powders (Mw=1,300,000) continue stirring at normal temperature 2h, obtain spinning solution presoma.By above-mentioned spinning solution presoma
It is placed in the syringe of 10ml, is then placed in electrostatic spinning apparatus, voltage 15kv is set, spinning distance L is 18cm, metal needle
Head is used as anode, and tinfoil paper does cathode, and injection speed 0.5ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 50 days in water, fluorescence intensity stills remain in 70% or so.And 100
After keeping 200min at a temperature of DEG C, fluorescence intensity stills remain in 80% or so.
Embodiment 11:
By 0.8g PbBr2With 0.24g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, puts
The stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyethylene of 5g is added in the above solution
Pyrrolidinone powders (Mw=1,300,000) continue stirring at normal temperature 2h, obtain spinning solution presoma.By above-mentioned spinning solution presoma
It is placed in the syringe of 10ml, is then placed in electrostatic spinning apparatus, voltage 50kv is set, spinning distance L is 45cm, metal needle
Head is used as anode, and tinfoil paper does cathode, and injection speed 5ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 30 days in water, fluorescence intensity stills remain in 80% or so.And 100
After keeping 100min at a temperature of DEG C, fluorescence intensity stills remain in 85% or so.
Embodiment 12:
By 2g PbCl2With 1.5 g CH3NH3I is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on
Stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polyvinyl chloride of 3g is added in the above solution
Powder (Mw=233,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in 10ml's
It in syringe, is then placed in electrostatic spinning apparatus, voltage 12kv is set, spinning distance L is 12cm, and metal needle is as sun
Pole, tinfoil paper do cathode, and injection speed 0.6ml/h carries out electrostatic spinning operation.The composite fiber thin film that will be collected on tinfoil paper
It is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 45 days in water, fluorescence intensity stills remain in 81% or so.And 90
After keeping 100min at a temperature of DEG C, fluorescence intensity stills remain in 83% or so.
Embodiment 13:
By 0.8g PbBr2With 0.24g CH3NH3Br is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, puts
The stirring at normal temperature 1h on magnetic stirring apparatus configures perovskite precursor solution.Then the polychlorostyrene second of 5g is added in the above solution
Alkene powder (Mw=233,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in 10ml
Syringe in, be then placed in electrostatic spinning apparatus, be arranged voltage 17kv, spinning distance L be 14cm, metal needle as sun
Pole, tinfoil paper do cathode, and injection speed 0.7ml/h carries out electrostatic spinning operation.It is compound by what is collected on tinfoil paper
CH3NH3PbBr3@PS fiber membrane is placed in 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 36 days in water, fluorescence intensity stills remain in 83% or so.And 98
After keeping 200min at a temperature of DEG C, fluorescence intensity stills remain in 89% or so.
Embodiment 14:
By 3g PbCl2With 2g CH3NH3I is put into 20ml sample bottle, and the DMF solvent of 10ml is added, is put into magneton, is placed on magnetic force
Stirring at normal temperature 1h on blender configures perovskite precursor solution.Then the polyvinyl chloride powder of 3g is added in the above solution
(Mw=233,000) continues stirring at normal temperature 2h, obtains spinning solution presoma.Above-mentioned spinning solution presoma is placed in the injection of 10ml
It in device, is then placed in electrostatic spinning apparatus, voltage 19kv is set, spinning distance L is 30cm, and metal needle is as anode, tin
Foil does cathode, and injection speed is 3.5 ml/h, carries out electrostatic spinning operation.The composite fiber thin film collected on tinfoil paper is placed in
In 50 DEG C of thermostatic drying chambers.
Wherein, after prepared film impregnates 35 days in water, fluorescence intensity stills remain in 88% or so.And 100
After keeping 100min at a temperature of DEG C, fluorescence intensity stills remain in 87% or so.
In conclusion the present invention provides a kind of overstable organic inorganic hybridization perovskite fiber membrane and its preparation sides
Method, in the polymer fabricated in situ CH3NH3PbX3The nanocrystalline method of perovskite.This technology polymer different by selection,
CH can be greatlyd improve3NH3PbX3The nanocrystalline thermal stability of perovskite, water stability, oxidative stability and photostability, and
And the LED component being made into also illustrates extensive colour gamut and colour temperature.It will be appreciated, however, that thin prepared by the present invention
Film is not merely used for LED preparation, any to use device made by film of the present invention all by the protection by this patent.
Collective's embodiment described herein only illustrates that spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, but simultaneously
Spirit or beyond the scope defined by the appended claims of the invention is not deviated by.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.
Claims (6)
1. a kind of overstable organic inorganic hybridization perovskite fiber membrane and preparation method thereof, which is characterized in that the method packet
Include following steps:
(1) a certain amount of lead halide and halogenation methylamine are dissolved in organic solvent by heating and magnetic agitation, obtains perovskite
Precursor solution；
(2) a certain amount of polymer is added in Xiang Shangshu perovskite precursor solution, by magnetic agitation, obtains electrostatic spinning
Mixed liquor；
(3) electrostatic spinning mixed liquor is placed in syringe, prepares CH using electrostatic spinning technique3NH3PbX3/ Polymer is fine
Tie up laminated film.
2. a kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof,
It is characterized in that, the molecular formula of lead halide is PbX2, wherein halogen X can be I, Br or Cl；The molecular formula of halogenation methylamine is
CH3NH3Y, wherein halogen Y can be I, Br or Cl.
3. a kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof,
It is characterized in that, halide PbX2With halogenation methylamine CH3NH3The molar ratio of X is (0.6-1.2): 1.
4. a kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof,
It is characterized in that, organic solvent used can be n,N-Dimethylformamide (DMF), n,N-dimethylacetamide (DMAc), diformazan
Base sulfoxide (DMSO), one or several kinds of mixture in 1,4-butyrolactone (GBL), and the mass ratio of perovskite and organic solvent
Are as follows: 100:(0.5 ~ 30).
5. a kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof,
It is characterized in that, in the preparation of spinning solution presoma, the mass ratio of polymer and organic solvent is 100:(10 ~ 60).
6. a kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof,
Be characterized in that, the polymer can for polystyrene (PS), Kynoar (PVDF), polyvinylacetate (PVAc),
Polymethyl methacrylate (PMMA), polyvinylpyrrolidone (PVP), polyurethane (PU), polyether sulfone (PES) and polyvinyl chloride
Or a variety of mixing one of (PVC)；
A kind of overstable organic inorganic hybridization perovskite fiber membrane according to claim 1 and preparation method thereof, it is special
Sign is, in electrostatic spinning process, voltage can be 5 ~ 50KV, spinning distance (L) can be 5 ~ 50cm, injection speed be 0.1 ~
5ml/h(device such as Fig. 1).
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Cited By (4)
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| CN113151924A (en) * | 2021-03-05 | 2021-07-23 | 北京化工大学 | Preparation method of chiral polymer/perovskite hybrid nanofiber with efficient circular polarization luminescence property |
| CN113651984A (en) * | 2021-09-29 | 2021-11-16 | 长春工业大学 | High-stability polyurethane/quantum dot elastomer composite material and preparation method thereof |
| CN114481351A (en) * | 2022-02-21 | 2022-05-13 | 青岛大学 | Copolymer in-situ embedded CdSe quantum dot nano-film and preparation method and application thereof |
| CN116065301A (en) * | 2022-12-26 | 2023-05-05 | 深圳大学 | Perovskite polymer fiber film and preparation method thereof |
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| CN113651984A (en) * | 2021-09-29 | 2021-11-16 | 长春工业大学 | High-stability polyurethane/quantum dot elastomer composite material and preparation method thereof |
| CN114481351A (en) * | 2022-02-21 | 2022-05-13 | 青岛大学 | Copolymer in-situ embedded CdSe quantum dot nano-film and preparation method and application thereof |
| CN116065301A (en) * | 2022-12-26 | 2023-05-05 | 深圳大学 | Perovskite polymer fiber film and preparation method thereof |
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