CN107418572A - A kind of method that sonochemical method prepares caesium lead bromine perovskite quantum dot - Google Patents
A kind of method that sonochemical method prepares caesium lead bromine perovskite quantum dot Download PDFInfo
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Abstract
The present invention relates to a kind of method that sonochemical method prepares caesium lead bromine perovskite quantum dot, pure Cs will be analyzed2CO3It is dissolved in the mixed solution of 1 octadecylene and oleic acid, treats Cs2CO3Room temperature is cooled to after being completely dissolved；Pure PbBr will be analyzed2It is dissolved in the mixed solution of 1 octadecylene and oleic acid, oleyl amine, treats PbBr2Room temperature is cooled to after being completely dissolved；Above-mentioned resulting precursor solution is well mixed, ultrasonic reactor is put into and carries out ultrasonic reaction；Solution, is finally scattered in toluene, obtains caesium lead bromine perovskite quanta point material by the solution of preparation toluene centrifuge washing 3 times.Relative to the hot injection method of tradition, the synthetically prepared caesium lead bromine perovskite quanta point material CsPbBr of sonochemical method3It is simple with reaction condition, without high temperature, the advantages of saving the energy.By control the reaction time can convenient quantum point material light emitting region, while can be found that the quantum dot has excellent optics unicity.
Description
Technical field
The invention belongs to information material technical field, and in particular to a kind of sonochemical method prepares caesium lead bromine perovskite quantum
The method of point.
Background technology
Quantum dot can be described as nanocrystalline again, due to its unique quantum effect, be widely used in sensitization solar battery, light
The multiple fields such as photoluminescence, photocatalysis.Caesium lead bromine perovskite CsPbX3(X=Cl, Br, I) quantum dot is because having higher fluorescence
Quantum efficiency (~90%), emission wavelength cover whole visible spectrum (400~700nm), halfwidth relative narrower (12~
42nm) many advantages, such as and receive much concern, these performances make current most potential using value luminescent material it
One.
Main flow caesium lead halogen quantum dot synthetic method is hot injection method at present, but the power consumption of this method is big, and reaction produces big
Organic liquid waste is measured, simultaneous reactions process operation is complicated easily to produce human error, is unfavorable for accurately studying quantum dot course of reaction
In kinetics problem.And ultrasound synthesis has as a kind of new chemical synthesis process and reacts uniform, reaction speed
The advantages that adjustable, energy consumption low environment close friend.Different from other room temperature methods synthesis quantum dot, sonochemical method is showed using ultrasonic cavitation
As producing energy, reaction is promoted to carry out, while cavitation bubble quick disappearance can suppress particle and further grow up, the mechanism is very
It is suitably applied the synthesis of nanocrystal.The invention largely synthesizes CsPbBr using common supersonic wave cleaning machine3Quantum dot, drop
Low reaction temperature, improves quantum dot homogeneity, has obtained better performances perovskite quanta point material.
The content of the invention
The technical problems to be solved by the invention are for above shortcomings in the prior art, there is provided one kind reaction bar
Part is simple, saves the method that the sonochemical method of the energy prepares caesium lead bromine perovskite quantum dot.
The caesium lead bromine perovskite quanta point material (CsPbBr that the present invention synthesizes3), particle diameter is 6.8~15.1nm, and light model
Enclosing can control in 458~514nm, the fluorescence spectrum peak a width of 20nm of half-peak or so.
Technical scheme can be realized by following technical measures：
A kind of method that sonochemical method prepares caesium lead bromine perovskite quantum dot, comprises the following steps：
Step (1) will analyze pure Cs2CO3It is dissolved in 1- octadecylenes, is added necessarily after heating certain time in a nitrogen atmosphere
Gauging acid, treats Cs2CO3Room temperature is cooled to after being completely dissolved；
Step (2) will analyze pure PbBr2It is dissolved in 1- octadecylenes, is added necessarily after heating certain time in a nitrogen atmosphere
The oleic acid and oleyl amine of amount, treat PbBr2Room temperature is cooled to after being completely dissolved；
Precursor solution obtained by step (1) and step (2) is pressed Cs by step (3)+With PbBr2Mol ratio is 1:2 mixing
Uniformly, it is put into ultrasonic reactor and carries out ultrasonic reaction；
Solution is finally scattered in toluene, obtained by step (4) by solution prepared by step 3) toluene centrifuge washing 3 times
To caesium lead bromine perovskite quanta point material CsPbBr3。
Preferably, the heat time in the step (1) and step (2) is 30~60min, and heating-up temperature is 80~130
℃。
Preferably, Cs in the solution that step (1) obtains+Concentration is 0.1~0.3mol/L, in the solution that step (2) obtains
PbBr2Concentration is 0.02~0.06mol/L.
Preferably, the volume ratio of oleic acid and 1- octadecylenes is 1 in step (1):5~1:20, oleic acid in step (2)：Oleyl amine：
The volume ratio of 1- octadecylenes is 1:1:5~1:1:20, the purity of the 1- octadecylenes is 90%.
Preferably, the volume ratio of oleic acid and 1- octadecylenes is 1 in step (1):12, oleic acid in step (2)：Oleyl amine：1- ten
The volume ratio of eight alkene is 1:1:10, the purity of the 1- octadecylenes is 90%.
Preferably, the ultrasonic power in step (3) is 100W to 250W, and the ultrasonic reaction time is 30~180min.
Preferably, centrifugation rate is 8000r/min in step 4), and disengaging time is 5min.
Preferably, described ultrasonic reactor is ultrasonic probe or supersonic cleaning machine.
A kind of caesium lead bromine perovskite quanta point material, wants above-mentioned method to be prepared using right, particle diameter be 6.8~
15.1nm, light emitting region is in 458~514nm, the fluorescence spectrum peak a width of 20nm of half-peak or so.
The beneficial effects of the present invention are：Relative to the hot injection method of tradition, the synthetically prepared caesium lead bromine calcium titanium of sonochemical method
Ore deposit quanta point material (CsPbBr3) there is the advantages of reaction condition is simple, without the high temperature saving energy.By controlling the reaction time
Can convenient quantum point material light emitting region (483~514nm), while it is excellent to can be found that the quantum dot has
Optics unicity, fluorescence spectrum peak half-peak breadth is 20nm or so.
Brief description of the drawings
Fig. 1 is the CsPbBr prepared by 1-4 of the embodiment of the present invention3The X-ray diffractogram of perovskite quanta point material, as a result
The CsPbBr of ultrasound synthesis under the conditions of display different time3Perovskite quanta point material is CsPbBr3Cube crystalline phase；
Fig. 2 is the CsPbBr prepared by 1-5 of the embodiment of the present invention3Corresponding fluorescence spectra, from the peak position of fluorescence spectrum
It was determined that adjusting reaction time and power can adjust CsPbBr3Extent of fluorescence, while it is excellent to can be found that the quantum dot has
Different optics unicity, fluorescence radiation peak half-peak breadth is 20nm or so；
Fig. 3 is CsPbBr prepared by 1-4 of the embodiment of the present invention3Corresponding ultraviolet-visible absorption spectroscopy, it can be seen that with
Reaction time extends extinction spectrum and blue shift gradually occurs；
Fig. 4 is CsPbBr prepared by the embodiment of the present invention 13Corresponding transmission electron microscope picture；
Fig. 5 is CsPbBr prepared by the embodiment of the present invention 23Corresponding transmission electron microscope picture；
Fig. 6 is CsPbBr prepared by the embodiment of the present invention 33Corresponding transmission electron microscope picture；
Fig. 7 is CsPbBr prepared by the embodiment of the present invention 43Corresponding transmission electron microscope picture；
Fig. 8 is CsPbBr prepared by the embodiment of the present invention 23Corresponding high-resolution-ration transmission electric-lens figure；
Fig. 9 is CsPbBr prepared by the embodiment of the present invention 93Corresponding transmission electron microscope picture.
Embodiment
Further the present invention will be described with reference to the accompanying drawings and examples, but present disclosure is not limited solely to
The following examples.
In following examples, unless specific instructions, described reagent is commercially available chemical reagent.
Embodiment 1
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8gCs2CO3It is dissolved in 30ml1- octadecylenes, is heated to 80 DEG C in a nitrogen atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, is heated to 80 DEG C in a nitrogen atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 250W power ultrasonics 30min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
CsPbBr prepared by the above method3Carry out powder X-ray diffraction, its spectrogram as shown in Figure 1, the diffraction maximum of sample
Belong to the cubic system CsPbBr of standard3(standard card number：01-075-0412), other impurity peaks do not detect, say
Our bright method is advantageous to synthesize the CsPbBr of pure phase3.Spectrum analysis such as Fig. 2, shown in 3, its glow peak is 483nm, is absorbed
There is certain blue shift at peak compared with glow peak, while can be found that the quantum dot has excellent optics unicity, fluorescence radiation peak half-peak
A width of 20nm or so.Transmission electron microanalysis result such as Fig. 4, it can be found that the CsPbBr of synthesis3Quantum dot is spherical, size
It is comparatively homogeneous for 6.8nm or so.
Embodiment 2
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 4g Cs2CO3It is dissolved in 150ml1- octadecylenes, is heated to 80 DEG C in a nitrogen atmosphere, adds 12.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.66g PbBr2It is dissolved in 50ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 5ml oleic acid
With 5ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 250W power ultrasonics 60min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
CsPbBr prepared by the above method3Carry out powder X-ray diffraction, its spectrogram as shown in Figure 1, the diffraction maximum of sample
Belong to the cubic system CsPbBr of standard3(standard card number：01-075-0412), other impurity peaks do not detect, say
Our bright method is advantageous to synthesize the CsPbBr of pure phase3.Spectrum analysis such as Fig. 2, shown in 3, its glow peak is 494nm, is absorbed
There is certain blue shift at peak compared with glow peak, while can be found that the quantum dot has excellent optics unicity, fluorescence radiation peak half-peak
A width of 20nm or so.Transmission electron microanalysis result such as Fig. 5, it can be found that the CsPbBr of synthesis3Quantum dot is spherical, size
It is comparatively homogeneous for 8.4nm or so.High-resolution transmission electron microanalysis result such as Fig. 8, by measurement it can be found that in figure
Crystal face is cubic system CsPbBr3(standard card number：(200) crystal face 01-075-0412).
Embodiment 3
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 250W power ultrasonics 120min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
CsPbBr prepared by the above method3Carry out powder X-ray diffraction, its spectrogram as shown in Figure 1, the diffraction maximum of sample
Belong to the cubic system CsPbBr of standard3(standard card number：01-075-0412), other impurity peaks do not detect, say
Our bright method is advantageous to synthesize the CsPbBr of pure phase3.Spectrum analysis such as Fig. 2, shown in 3, its glow peak is 508nm, is absorbed
There is certain blue shift at peak compared with glow peak, while can be found that the quantum dot has excellent optics unicity, fluorescence radiation peak half-peak
A width of 20nm or so.Transmission electron microanalysis result such as Fig. 6, it can be found that the CsPbBr of synthesis3Quantum dot is irregular vertical
Square, size are 12.9nm or so, and homogeneity is remarkably decreased.
Embodiment 4
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 250W power ultrasonics 180min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
CsPbBr prepared by the above method3Carry out powder X-ray diffraction, its spectrogram as shown in Figure 1, the diffraction maximum of sample
Belong to the cubic system CsPbBr of standard3(standard card number：01-075-0412), other impurity peaks do not detect, say
Our bright method is advantageous to synthesize the CsPbBr of pure phase3.Spectrum analysis such as Fig. 2, shown in 3, its glow peak is 514nm, is absorbed
There is certain blue shift at peak compared with glow peak, while can be found that the quantum dot has excellent optics unicity, fluorescence radiation peak half-peak
A width of 20nm or so.Transmission electron microanalysis result such as Fig. 7, it can be found that the CsPbBr of synthesis3Quantum dot is irregular vertical
Square, size is 15.1nm or so, homogeneous poor.
Embodiment 5
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 100W power ultrasonics 60min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
CsPbBr prepared by the above method3Spectrum analysis is carried out as shown in Fig. 2 its glow peak is 458nm, while can be with
It was found that the quantum dot has excellent optics unicity, the fluorescence radiation peak a width of 20nm of half-peak or so.
Embodiment 6
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N2130 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, in N2130 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 500W power ultrasonics 30min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
Embodiment 7
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 1.6g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N2100 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.264gPbBr2It is dissolved in 10ml1- octadecylenes, in N2100 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 500W power ultrasonics 30min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
Embodiment 8
A kind of sonochemical method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.4g Cs2CO3It is dissolved in 30ml1- octadecylenes, in N2100 DEG C are heated under gas atmosphere, adds 2.5ml oil
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.066gPbBr2It is dissolved in 10ml1- octadecylenes, in N2100 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2Room temperature is cooled to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by above-mentioned steps (1) (2)1And R2According to 1:10 ratio is well mixed to obtain R3.Mixing
Solution R3It is transferred in glass container, is put into supersonic cleaning machine, with 500W power ultrasonics 30min；
(4) liquid obtained by step (3) is dissolved in toluene, with toluene centrifuge washing 3 times, finally disperseed solution
In toluene, caesium lead bromine perovskite quanta point material CsPbBr is obtained3。
Embodiment 9
A kind of hot injection method synthesis caesium lead bromine perovskite quantum dot (CsPbBr3) preparation method, comprise the following steps that：
(1) by 0.8gCsCO3It is dissolved in 30ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 2.5ml oleic acid,
Treat CsCO3Room temperature is cooled to after being completely dissolved, obtains solution R1；
(2) by 0.132gPbBr2It is dissolved in 10ml1- octadecylenes, in N280 DEG C are heated under gas atmosphere, adds 1ml oleic acid
With 1ml oleyl amines, PbBr is treated2170 DEG C are warming up to after being completely dissolved, obtains solution R2；
(3) by the liquid R obtained by 1ml above-mentioned steps (1)1It is rapidly injected R2Interior reaction 5s, frozen water cooling, obtains R3。
(4) by liquid R resulting in step (3)3It is dissolved in toluene, with toluene centrifuge washing 3 times, finally by solution point
Dissipate in toluene；
CsPbBr prepared by the above method3Fluorescence spectrum glow peak is 514nm, similar to the glow peak position of example 4, but is needed
Want 170 DEG C of heating, simultaneous reactions process condition harshness.Transmission electron microanalysis result such as Fig. 9, it can be found that synthesis
CsPbBr3Quantum dot is irregular cube of bulk, and homogeneity is poor.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent substitution, without departing from the essence of technical solution of the present invention
And scope.
Claims (10)
1. a kind of method that sonochemical method prepares caesium lead bromine perovskite quantum dot, it is characterised in that comprise the following steps：
Step (1) will analyze pure Cs2CO3It is dissolved in 1- octadecylenes, certain gauging is added after heating certain time in a nitrogen atmosphere
Acid, treat Cs2CO3Room temperature is cooled to after being completely dissolved；
Step (2) will analyze pure PbBr2It is dissolved in 1- octadecylenes, is added in a nitrogen atmosphere after heating certain time a certain amount of
Oleic acid and oleyl amine, treat PbBr2Room temperature is cooled to after being completely dissolved；
Precursor solution obtained by step (1) and step (2) is pressed Cs by step (3)+With PbBr2Mol ratio is 1:2 ratio is mixed
Close uniformly, ultrasonic reaction is carried out using ultrasonic reactor；
Solution is finally scattered in toluene, obtains caesium by step (4) by solution prepared by step 3) toluene centrifuge washing 3 times
Lead bromine perovskite quanta point material CsPbBr3。
2. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In the heat time in the step (1) and step (2) is 30~60min, and heating-up temperature is 80~130 DEG C.
3. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In Cs in the solution that step (1) obtains+Concentration is 0.1~0.3mol/L, PbBr in the solution that step (2) obtains2Concentration is
0.02~0.06mol/L.
4. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In the volume ratio of oleic acid and 1- octadecylenes is 1 in step (1):5~1:20, oleic acid in step (2)：Oleyl amine：The body of 1- octadecylenes
Product is than being 1:1:5~1:1:20, the purity of the 1- octadecylenes is 90%.
5. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In the volume ratio of oleic acid and 1- octadecylenes is 1 in step (1):12, oleic acid in step (2)：Oleyl amine：The volume ratio of 1- octadecylenes
For 1:1:10, the purity of the 1- octadecylenes is 90%.
6. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In the ultrasonic reaction power in step (3) is 100W to 500W, and the ultrasonic reaction time is 30~180min.
7. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In centrifugation rate is 8000r/min in step 4), and disengaging time is 5min.
8. the method that a kind of sonochemical method according to claim 1 prepares caesium lead bromine perovskite quantum dot, its feature exist
In described ultrasonic reactor is ultrasonic probe or supersonic cleaning machine.
9. a kind of caesium lead bromine perovskite quanta point material, it is characterised in that using the method system described in claim any one of 1-8
It is standby to obtain.
A kind of 10. caesium lead bromine perovskite quanta point material according to claim 9, it is characterised in that the caesium lead bromine calcium
Titanium ore quanta point material particle diameter is 6.8~15.1nm, and light emitting region is in 458~514nm.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108728090A (en) * | 2018-06-12 | 2018-11-02 | 东南大学 | A method of additive Mn perovskite quantum dot is quickly prepared based on ultrasound |
| CN108862376A (en) * | 2018-09-17 | 2018-11-23 | 福州大学 | A kind of raising full-inorganic CsPbBr3Perovskite stability approach in aqueous solution |
| CN110227532A (en) * | 2019-06-28 | 2019-09-13 | 中国计量大学 | A kind of preparation method of lead bromide caesium quantum dot/azotized carbon nano piece photochemical catalyst |
| CN110394194A (en) * | 2019-08-07 | 2019-11-01 | 浙江师范大学 | A kind of novel photocatalyst controllable method for preparing based on mineral ligand modification |
| CN110902715A (en) * | 2019-12-02 | 2020-03-24 | 武汉理工大学 | Device and method for continuously and controllably synthesizing uniform nanocrystalline at normal temperature |
| CN110982522A (en) * | 2019-11-27 | 2020-04-10 | 华南理工大学 | Polyhedral perovskite micron material and preparation method thereof |
| CN111233031A (en) * | 2020-01-19 | 2020-06-05 | 国家纳米科学中心 | Perovskite quantum dot and preparation method thereof |
| CN111569860A (en) * | 2020-05-28 | 2020-08-25 | 浙江师范大学 | Preparation method and application of Z-scheme type perovskite quantum dot/bismuth tungstate composite material |
| CN112986199A (en) * | 2021-02-22 | 2021-06-18 | 江南大学 | Fluorescence detection method for acid value in oil |
| CN114105189A (en) * | 2021-11-26 | 2022-03-01 | 广东省科学院半导体研究所 | Preparation method of green fluorescent zero-dimensional perovskite |
| US20220064193A1 (en) * | 2018-10-17 | 2022-03-03 | Korea Institute Of Science & Technology Information | Lhp synthesis simulating method and apparatus |
| CN116162456A (en) * | 2023-02-21 | 2023-05-26 | 山东大学 | Preparation method of narrow-band green fluorescent powder of cesium lead bromine perovskite quantum dot embedded metal organic framework material ZIF-8 |
| CN116285977A (en) * | 2021-12-14 | 2023-06-23 | 中国科学院大连化学物理研究所 | Continuous preparation CsPbX by ultrasonic microreactor 3 Method for preparing perovskite quantum dot material |
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| CN108728090A (en) * | 2018-06-12 | 2018-11-02 | 东南大学 | A method of additive Mn perovskite quantum dot is quickly prepared based on ultrasound |
| CN108862376A (en) * | 2018-09-17 | 2018-11-23 | 福州大学 | A kind of raising full-inorganic CsPbBr3Perovskite stability approach in aqueous solution |
| US20220064193A1 (en) * | 2018-10-17 | 2022-03-03 | Korea Institute Of Science & Technology Information | Lhp synthesis simulating method and apparatus |
| US11912733B2 (en) * | 2018-10-17 | 2024-02-27 | Korea Institute Of Science & Technology Information | LHP synthesis simulating method and apparatus |
| CN110227532A (en) * | 2019-06-28 | 2019-09-13 | 中国计量大学 | A kind of preparation method of lead bromide caesium quantum dot/azotized carbon nano piece photochemical catalyst |
| CN110394194A (en) * | 2019-08-07 | 2019-11-01 | 浙江师范大学 | A kind of novel photocatalyst controllable method for preparing based on mineral ligand modification |
| CN110982522A (en) * | 2019-11-27 | 2020-04-10 | 华南理工大学 | Polyhedral perovskite micron material and preparation method thereof |
| CN110982522B (en) * | 2019-11-27 | 2022-05-24 | 华南理工大学 | Polyhedral perovskite micron material and preparation method thereof |
| CN110902715A (en) * | 2019-12-02 | 2020-03-24 | 武汉理工大学 | Device and method for continuously and controllably synthesizing uniform nanocrystalline at normal temperature |
| CN111233031B (en) * | 2020-01-19 | 2022-08-02 | 国家纳米科学中心 | Perovskite quantum dot and preparation method thereof |
| CN111233031A (en) * | 2020-01-19 | 2020-06-05 | 国家纳米科学中心 | Perovskite quantum dot and preparation method thereof |
| CN111569860A (en) * | 2020-05-28 | 2020-08-25 | 浙江师范大学 | Preparation method and application of Z-scheme type perovskite quantum dot/bismuth tungstate composite material |
| CN112986199A (en) * | 2021-02-22 | 2021-06-18 | 江南大学 | Fluorescence detection method for acid value in oil |
| CN114105189A (en) * | 2021-11-26 | 2022-03-01 | 广东省科学院半导体研究所 | Preparation method of green fluorescent zero-dimensional perovskite |
| CN114105189B (en) * | 2021-11-26 | 2024-02-20 | 广东省科学院半导体研究所 | Preparation method of green fluorescent zero-dimensional perovskite |
| CN116285977A (en) * | 2021-12-14 | 2023-06-23 | 中国科学院大连化学物理研究所 | Continuous preparation CsPbX by ultrasonic microreactor 3 Method for preparing perovskite quantum dot material |
| CN116285977B (en) * | 2021-12-14 | 2024-05-14 | 中国科学院大连化学物理研究所 | Continuous preparation CsPbX by ultrasonic microreactor3Method for preparing perovskite quantum dot material |
| CN116162456A (en) * | 2023-02-21 | 2023-05-26 | 山东大学 | Preparation method of narrow-band green fluorescent powder of cesium lead bromine perovskite quantum dot embedded metal organic framework material ZIF-8 |
| CN116162456B (en) * | 2023-02-21 | 2024-05-24 | 山东大学 | Preparation method of narrow-band green fluorescent powder of cesium lead bromine perovskite quantum dot embedded metal organic framework material ZIF-8 |
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