CN108428798A - A kind of solar cell and preparation method thereof based on the copper-based perovskite of two dimension - Google Patents
A kind of solar cell and preparation method thereof based on the copper-based perovskite of two dimension Download PDFInfo
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Abstract
The invention discloses a kind of solar cell and preparation method thereof based on the copper-based perovskite of two dimension, battery structure by FTO electro-conductive glass, electron transfer layer, mesoporous layer, the copper-based perovskite light-absorption layer of two dimension, hole transmission layer and forms electrode from bottom to up.The copper-based perovskite light absorbent of two dimension of the present invention includes at least one of (C6H5NH3) 2CuBr4 nCln, (C6H5CH2NH3) 2CuBr4 nCln, [C6H5 (CH2) 2NH3] 2CuBr4 nCln, 0≤n≤4.The present invention is using the copper-based perovskite material of two dimension as light-absorption layer, it not only avoids because being endangered using toxic heavy metal lead and caused by biology and environment, and improve the stability of perovskite solar cell, environment amenable alcohol solvent is used in light-absorption layer preparation process simultaneously, new approach is provided for the development and application of solar cell.
Description
Technical field
It is more particularly to a kind of based on the copper-based calcium titanium of two dimension the present invention relates to solar cell preparing technical field
The solar cell of mine.
Background technology
Using organic metal lead halide as the organic inorganic hybridization perovskite material of representative because it is high with electricity conversion,
Preparation process and equipment are simply cheap, realize the advantages that industrializing using printing technology, receive whole world science in recent years
The extensive concern of family.Organic metal lead halide perovskite solar cell is from 2009 for the first time with 3.8% electricity conversion
After appearance, efficiency is then constantly riseing in short 8 years at an unprecedented rate, and cut-off obtains certification in March, 2018
Peak efficiency has reached 22.7%.
Although the solar cell based on organic metal lead halide perovskite light absorbent has quite high photoelectric conversion
Efficiency, but still have following deficiency：First, in organic metal lead halide perovskite material containing it is toxic can carcinogenic heavy metal
Lead hinders calcium titanium once decomposing can penetrate into soil to cause greatly to threaten to environment and the mankind and animal health
The commercialized development of mine solar cell；Second, organic metal lead halide perovskite material stability is poor, quick to air environment
Sense, the air of certain humidity can be such that its decomposition drastically declines so as to cause device performance, this has seriously affected solar cell
Service life；Third, organic metal lead halide perovskite can use in preparation process such as N, N- dimethyl methyls as light-absorption layer
The poisonous and harmful solvents such as amide (DMF), dimethyl sulfoxide (DMSO) (DMSO), gamma-butyrolacton (GBL), it is unfriendly to environment and human body.
Therefore it provides a kind of stablize without toxic heavy metal lead, air environment, while being used during preparing light-absorption layer
The material of environmentally friendly solvent prepares the technical issues of solar cell is those skilled in the art's urgent need to resolve.
Invention content
In view of this, the present invention provides a kind of solar cells and preparation method thereof based on the copper-based perovskite of two dimension.
The copper-based perovskite material of two dimension is free of toxic heavy metal lead element, will not threaten to biology and environment；Device obtained
It can stablize, effectively increase the service life of solar cell；In addition, in the process for preparing the copper-based perovskite light-absorption layer of two dimension
In, poisonous and harmful solvent is not used, it is friendly to environment and human body.
To realize that the above goal of the invention, the present invention use following technical scheme：
A kind of solar cell based on the copper-based perovskite of two dimension, battery structure is from bottom to up by FTO electro-conductive glass, electronics
Transport layer, mesoporous layer, the copper-based perovskite light-absorption layer of two dimension, hole transmission layer and electrode is formed.
In a kind of above-mentioned solar cell based on the copper-based perovskite of two dimension, the copper-based perovskite light absorbent of two dimension
For (C6H5NH3)2CuBr4-nCln、(C6H5CH2NH3)2CuBr4-nCln、[C6H5(CH2)2NH3]2CuBr4-nClnAt least one of,
0≤n≤4；Wherein：
Anilinium ion C6H5NH3 +Chemical structural formula be：
Benzylamine ion C6H5CH2NH3 +Chemical structural formula be：
Phenyl ethylamine ion C6H5(CH2)2NH3 +Chemical structural formula be：
In a kind of above-mentioned solar cell based on the copper-based perovskite of two dimension, the electron transfer layer is TiO2、ZnO、
SnO2Any one of electron transport material, thickness are 30~80nm；
The mesoporous layer is TiO2、ZnO、SnO2Any one of mesoporous material, thickness are 200~600nm；
The copper-based perovskite extinction layer thickness of two dimension is 300~800nm；
The hole transmission layer is 3- hexyls substituting polythiophene (P3HT), 2,2', [(the 4- methoxybenzenes of N, N- bis- of 7,7'- tetra-
Base) amino] two fluorenes (Spiro-OMeTAD) of -9,9'- spiral shells, poly- [bis- (4- phenyl) (2,4,6- trimethylphenyls) amine] (PTAA) be empty
Any one of hole transport materials, thickness are 30~80nm.
Described is any one of gold, silver electrode to electrode, and thickness is 60~120nm.
A kind of preparation method of the solar cell based on the copper-based perovskite of two dimension, specifically includes following steps：
(1) it prepares electron transfer layer using spin-coating method or spray pyrolysis on the FTO electro-conductive glass cleaned up and goes forward side by side
Row annealing；
(2) spin-coating method or silk screen print method is used to prepare mesoporous layer and made annealing treatment on the electron transport layer；
(3) the copper-based perovskite light-absorption layer of two dimension is prepared by spin coating perovskite precursor liquid on mesoporous layer and carried out at annealing
Reason；
(4) hole transmission layer is prepared using spin-coating method on the copper-based perovskite light-absorption layer of two dimension and is made annealing treatment；
(5) vapour deposition method is used to prepare to electrode on the hole transport layer.
In a kind of above-mentioned preparation method of the solar cell based on the copper-based perovskite of two dimension, the precursor liquid is by two
The powder for tieing up copper-based perovskite material is dissolved in ethyl alcohol and is prepared.
In the preparation method of above-mentioned solar cell, the preparation method of the copper-based perovskite material of two dimension is specific to wrap
Include following steps：
(1) 3~8mL B solutions is taken to be mixed with 5~10mL HX solution, ice bath stirring reacts 1~3h, restores to room temperature,
Volatilize 1~1.5h at a temperature of 50~70 DEG C；
(2) it takes above-mentioned steps (1) gained reactant to be cleaned three times with ether, is dried in vacuo at a temperature of 50~70 DEG C
1.5~3h obtains white AX powder.
(3) by CuX2With AX obtained in above-mentioned steps (2) with 1:2 molar ratio mixed dissolution in absolute ethyl alcohol,
1~3h is stirred at a temperature of 50~70 DEG C, ice bath stirring reacts 10~15h after being cooled to room temperature；
(4) products therefrom in above-mentioned steps (3) is filtered, 1 is dried in vacuo at a temperature of 50~70 DEG C after filtering
~3h obtains the copper-based perovskite material A of two dimension2CuBr4-nCln；
Wherein：B is aniline C6H5NH2, benzylamine C6H5CH2NH2, phenyl ethylamine C6H5(CH2)2NH2Any one of；A be and B phases
Corresponding anilinium ion C6H5NH3 +, benzylamine ion C6H5CH2NH3 +, phenyl ethylamine ion C6H5(CH2)2NH3 +Any one of；HX is
Any one of HBr, HCl；CuX2For CuBr2、CuCl2At least one of；0≤n≤4.
Above-mentioned technical characteristic according to the invention compared with prior art, mainly has technological merit below：
1. the copper-based perovskite light absorbent of two dimension that the present invention uses has used based on nontoxic and widely used copper
Element is wanted, is avoided because using the perovskite material containing lead element to cause damages to biology and environment.
2. the copper-based perovskite light absorbent of two dimension that the present invention uses, selects the hydrophobic organic cation with phenyl ring, has
There is good air environment stability, can effectively prevent decomposition of the water in air to perovskite material, improve use
Service life.
3. the copper-based perovskite light absorbent of two dimension that the present invention uses makes during preparing solar cell light-absorption layer
With environmental-friendly alcohol solvent, avoid because of the harm generated to environment using poisonous and harmful solvent.
4. raw material CuBr of the copper-based perovskite light absorbent of two dimension that the present invention uses used in preparation process2、
CuCl2Price is respectively 99 yuan/25 grams, 776 yuan/25 grams (Aladdin, 99.99%), is made compared to lead-based perovskite is prepared
PbI2、PbBr2(price is respectively 1390 yuan/25 grams, 995 yuan/25 grams, Aladdin, 99.99%) is more cheap, can
It is greatly cost-effective.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides one kind based on two-dimentional copper
The solar cell of based perovskite does not use poisonous and harmful heavy metallic lead element not only, but also has good stability, simultaneously
Use environment friendiy solvent, great marketing and application value more cheap using raw material in light-absorption layer preparation process.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the solar battery structure schematic diagram of the present invention；
Fig. 2 is the current -voltage curve of the solar cell of the embodiment of the present invention 1；
Fig. 3 is the external quantum efficiency curve of the solar cell of the embodiment of the present invention 1；
Fig. 4 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4Crystal pictorial diagram；
Fig. 5 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4X-ray diffraction spectrum；
Fig. 6 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4Crystal structure schematic diagram；
Fig. 7 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4The scanning electron microscope image of crystal；
Fig. 8 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4The uv-visible absorption spectra of film；
Fig. 9 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4The thermogravimetric curve of crystal；
Figure 10 is the (C of the embodiment of the present invention 16H5CH2NH3)2CuBr4X-ray of the film in air environment before and after 14 days
Diffraction spectra.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of solar cells based on the copper-based perovskite of two dimension, not only have without using toxic
Evil heavy metal lead element, and have good air environment stability, while the use environment friend in light-absorption layer preparation process
Good solvent.
Below in conjunction with the accompanying drawings and specific embodiment is described further implementation of the present invention.
Embodiment 1
Solar cell in the present embodiment is with the copper-based perovskite material (C of two dimension6H5CH2NH3)2CuBr4For light-absorption layer,
Middle benzylamine ion C6H5CH2NH3 +Structural formula be
(C6H5CH2NH2)2CuBr4Preparation method be：
(1) 5mL C are taken6H5CH2NH2(benzylamine, 99%, Aladdin) and 8.1mL HBr solution (hydrobromic acid, 40wt% water
Solution, Aladdin) mixing, 0 DEG C of ice bath stirring reaction 2h, volatilize after recovery to room temperature at a temperature of 60 DEG C 1h；
(2) reaction product that step (1) obtains is cleaned three times with ether, is dried in vacuo 2h at a temperature of 60 DEG C, obtains
To white C6H5CH2NH3Br powder；
(2) 223.35mg (1mmol) CuBr is taken2(copper bromide, 99.9%, Aladdin) and 376.12mg (2mmol)
C6H5CH2NH3Br mixed dissolutions stir 2h in 10mL absolute ethyl alcohols at a temperature of 60 DEG C, 0 DEG C of ice after being cooled to room temperature
Bath is stirred to react 12h；
(4) step (3) products therefrom is filtered, is dried in vacuo 2h at a temperature of 60 DEG C after filtering, obtains atropurpureus
Powder (C6H5CH2NH3)2CuBr4。
Please refer to attached drawing 1, the solar cell based on the copper-based perovskite light absorbent of two dimension in the present embodiment is from the bottom to top
Including：Electro-conductive glass 1, electron transfer layer 2, mesoporous layer 3, the copper-based perovskite light-absorption layer 4 of two dimension, hole transmission layer 5 and to electrode
6.Wherein two-dimentional copper-based perovskite light-absorption layer is (C6H5CH2NH2)2CuBr4；Electro-conductive glass is FTO electro-conductive glass；Electron transfer layer
For TiO2；Mesoporous layer is TiO2；Hole transmission layer is P3HT, to electrode is Au.
Solar cell device preparation process：
(1) FTO electro-conductive glass pre-processes：By the transparent conducting glass etched successively with electro-conductive glass cleaning solution, go from
Sub- water, acetone, isopropanol clean 15min, and then nitrogen dries up, and are then led with UV ozone cleaning machine processing 20min with improving
The wellability of electric substrate.
(2)TiO2It is prepared by electron transfer layer：Titanium diisopropoxide bis(acetylacetonate)
(Sigma-Aldrich, 75% aqueous isopropanol) solution is dissolved in n-butanol and is prepared into TiO2Electron transfer layer solution is being located
2000r.p.m on the FTO electro-conductive glass managed, 60s spin coatings form TiO2Electron transfer layer, then 125 DEG C annealing 30min, most
500 DEG C of annealing 30min in Muffle furnace afterwards.
(3)TiO2It is prepared by mesoporous layer：By the TiO of Dyesol 30NR-D2Slurry is distributed to 1/6 mass ratio in ethyl alcohol,
Then 4000r.p.m, 30s are spin-coated on TiO2On electron transfer layer, TiO is formed2Mesoporous layer, then 80 DEG C annealing 30min, then
500 DEG C of annealing 30min in Muffle furnace.
(4) prepared by the copper-based perovskite light-absorption layer of two dimension：100mg(C6H5CH2NH3)2CuBr4It is dissolved in 1mL absolute ethyl alcohols
Form the perovskite precursor liquid of a concentration of 100mg/mL.50μL(C6H5CH2NH3)2CuBr4Precursor liquid drops in TiO2On mesoporous layer,
700r.p.m, 5s, 4000r.p.m, 30s spin coating prepare (C6H5CH2NH3)2CuBr4Film, and 80 DEG C of 15min that anneal, final
To translucent atropurpureus film.
(5) prepared by P3HT hole transmission layers：20mg/mL P3HT chlorobenzene solutions are prepared, 4000r.p.m, 30s are spin-coated on calcium
On titanium ore light-absorption layer, P3HT hole transmission layers, subsequent 100 DEG C of annealing 10min are obtained.
(6) Au prepares electrode：Au is deposited to electrode.
Embodiment 2
Solar cell in the present embodiment is with the copper-based perovskite material (C of two dimension6H5NH3)2CuBr4For light-absorption layer, wherein
Anilinium ion C6H5NH3 +Structural formula be
(C6H5NH3)2CuBr4Preparation method be：
(1) 5mL C are taken6H5NH2(aniline, 99%, Aladdin) (hydrobromic acid, 40wt% are water-soluble with 9.7mL HBr solution
Liquid, Aladdin) mixing, 0 DEG C of ice bath stirring reaction 2h, volatilize after recovery to room temperature at a temperature of 60 DEG C 1h；
(2) reaction product that step (1) obtains is cleaned three times with ether, is dried in vacuo 2h at a temperature of 60 DEG C, obtains
To white C6H5NH3Br powder；
(3) 223.35mg (1mmol) CuBr is taken2(copper bromide, Aladdin, 99.9%) and 348.16mg (2mmol)
C6H5NH3Br mixed dissolutions stir 2h in 10mL absolute ethyl alcohols at a temperature of 60 DEG C, and 0 DEG C of ice bath stirs after being cooled to room temperature
Mix reaction 12h；
(4) step (3) products therefrom is filtered, is dried in vacuo 2h at a temperature of 60 DEG C after filtering, obtains atropurpureus
Powder (C6H5NH3)2CuBr4。
Solar cell based on the copper-based perovskite light absorbent of two dimension in the present embodiment is with (C6H5NH3)2CuBr4For extinction
Layer, battery structure are FTO electro-conductive glass, TiO from bottom to up2Electron transfer layer, TiO2Mesoporous layer, the copper-based perovskite extinction of two dimension
Layer, P3HT hole transmission layers, Au are to electrode.
Solar cell device preparation process reference implementation example 1 in the present embodiment.In addition, wherein (C6H5NH3)2CuBr4Before
Drive liquid preparation method be：100mg(C6H5NH3)2CuBr4Powder, which is dissolved in 1mL absolute ethyl alcohols, forms a concentration of 100mg/mL
Perovskite precursor liquid.
Embodiment 3
Solar cell in the present embodiment is with the copper-based perovskite material [C of two dimension6H5(CH2)2NH3]2CuBr4For extinction
Layer, wherein phenyl ethylamine ion C6H5(CH2)2NH3 +Structural formula be
[C6H5(CH2)2NH3]2CuBr4Preparation method be：
(1) 5mL C are taken6H5(CH2)2NH2(phenyl ethylamine, 98%, Aladdin) and 7.1mL HBr solution (hydrobromic acid,
40wt% aqueous solutions, Aladdin) it mixes, 0 DEG C of ice bath stirring reacts 2h, restores to room temperature, volatilizees at a temperature of 60 DEG C
1h；
(2) reaction product that step (1) obtains is cleaned three times with ether, is dried in vacuo 2h at a temperature of 60 DEG C, obtains
To white C6H5(CH2)2NH3Br powder；
(3) 223.35mg (1mmol) CuBr is taken2(copper bromide, 99.9%, Aladdin) and 404.18mg (2mmol) C6H5
(CH2)2NH3Br mixed dissolutions stir 2h in 10mL absolute ethyl alcohols at a temperature of 60 DEG C, 0 DEG C of ice bath after being cooled to room temperature
It is stirred to react 12h；
(4) step (3) products therefrom is filtered, is dried in vacuo 2h at a temperature of 60 DEG C after filtering, obtains atropurpureus
Powder [C6H5(CH2)2NH3]2CuBr4。
Solar cell based on the copper-based perovskite light absorbent of two dimension in the present embodiment is with [C6H5(CH2)2NH3]2CuBr4
For light-absorption layer, solar battery structure is FTO electro-conductive glass, TiO from bottom to up2Electron transfer layer, TiO2Mesoporous layer, two-dimentional copper
Based perovskite light-absorption layer, P3HT hole transmission layers, Au are to electrode.
Solar cell device preparation process reference implementation example 1 in the present embodiment.In addition, wherein [C6H5(CH2)2NH3]2CuBr4The preparation method of precursor liquid is：100mg[C6H5(CH2)2NH3]2CuBr4Powder be dissolved in 1mL absolute ethyl alcohols formed it is dense
Degree is the perovskite precursor liquid of 100mg/mL.
Embodiment 4
Solar cell in the present embodiment is with the copper-based perovskite material (C of two dimension6H5NH3)2CuBr3Cl is light-absorption layer,
Middle benzylamine ion C6H5CH2NH3 +Structural formula be
(C6H5CH2NH2)2CuBr3Cl4Preparation method be：
(1) 5mL C are taken6H5CH2NH2(benzylamine, 99%, Aladdin) and 8.1mL HBr solution (hydrobromic acid, 40wt% water
Solution, Aladdin) mixing, 0 DEG C of ice bath stirring reaction 2h, after recovery to room temperature, volatilize 1h at a temperature of 60 DEG C；
(2) reaction product that step (1) obtains is cleaned three times with ether, is dried in vacuo 2h at a temperature of 60 DEG C, obtains
To white C6H5CH2NH3Br powder；
(3) 111.67mg (0.5mmol) CuBr is taken2(copper bromide, 99.9%, Aladdin) and 67.23mg (0.5mmol)
CuCl2(copper chloride, 99.9%, Aladdin) and 376.12mg (2mmol) C6H5CH2NH3Br mixed dissolutions are in 10mL absolute ethyl alcohols
In, 2h is stirred at a temperature of 60 DEG C, 0 DEG C of ice bath stirring 12h after being cooled to room temperature；
(4) step (3) products therefrom is filtered, is dried in vacuo 2h at a temperature of 60 DEG C after filtering, obtains purple powder
End (C6H5CH2NH3)2CuBr3Cl。
Solar cell based on the copper-based perovskite light absorbent of two dimension in the present embodiment is with (C6H5CH2NH3)2CuBr3Cl
For light-absorption layer, solar battery structure is FTO electro-conductive glass, TiO from bottom to up2Electron transfer layer, TiO2Mesoporous layer, two-dimentional copper
Based perovskite light-absorption layer, P3HT hole transmission layers, Au are to electrode.
Solar cell device preparation process reference implementation example 1 in the present embodiment.In addition, wherein (C6H5CH2NH3)2CuBr3The preparation method of Cl precursor liquids is：100mg(C6H5CH2NH3)2CuBr3Cl powder is dissolved in 1mL absolute ethyl alcohols and is formed
The perovskite precursor liquid of a concentration of 100mg/mL.
Test characterization：
It is test object with embodiment 1, table is carried out to the copper-based perovskite material of the class two-dimensional and its solar cell device
Sign.
One, electricity conversion, external quantum efficiency：
(standard test condition, 100mW/cm are tested using solar simulator2, AM1.5), the solar cell with
0.08cm2Active area be measured.
As shown in Fig. 2, when scanning voltage is from 1.2V to -0.2V, the electricity conversion of solar cell is 0.2%,
Open-circuit voltage VocFor 0.68V, short-circuit current density JscFor 0.73mA/cm2, still also very big promotion is empty for photoelectric conversion efficiency
Between.
As shown in figure 3, the current density of the solar cell reaches 0.67mA/cm2。
Two, (C6H5CH2NH3)2CuBr4Crystal structure, crystallization shape, energy gap：
Using powder x-ray diffraction, scanning electron microscope, ultraviolet-visible spectrophotometer is to (C6H5CH2NH3)2CuBr4The fundamental property of the copper-based perovskite material of two dimension is characterized.
As shown in figure 4, (C6H5CH2NH3)2CuBr4For hexagonal crystal structure, lattice constant
As shown in figure 5, (C6H5CH2NH3)2CuBr4Crystal slabbing crystal.
As shown in fig. 6, (C6H5CH2NH3)2CuBr4For CuBr6The two-dimensional layer that octahedral layer is spaced apart with organic ion layer
Shape structure.
As shown in Figure 7, it was demonstrated that (C6H5CH2NH3)2CuBr4Crystal has two-dimensional layered structure.
As shown in figure 8, (C6H5CH2NH3)2CuBr4Energy gap is 1.81eV, and is had well in visible-range
Light absorpting ability.
Three, stability：
As shown in figure 9, (C6H5CH2NH3)2CuBr4Start to decompose at 160 DEG C, there is good thermal stability.
As shown in Figure 10, (C6H5CH2NH3)2CuBr4Film placed in air environment 14 days after XRD spectrum and mark
Quasi- collection of illustrative plates does not have significant change, shows (C6H5CH2NH3)2CuBr4With good air stability.
(C of the present invention6H5CH2NH3)2CuBr4The thermal weight loss temperature of the copper-based perovskite light absorbent of two dimension is 160
DEG C, and CH3NH3PbI3(MAPbI3) perovskite material can decompose at 85 DEG C.Show (C6H5CH2NH3)2CuBr4Compare MAPbI3Have
Better thermal stability.
Refering to attached drawing attached drawing 10, (C of the invention6H5CH2NH3)2CuBr4The copper-based perovskite light absorbent of two dimension is in air ring
Occur other diffraction maximums in border after 10 days, indicates that its just starts to decompose；And MAPbI3In air environment within four days just
It can decompose.Show (C6H5CH2NH3)2CuBr4Compare MAPbI3With better humidity stability.
Embodiment 2, embodiment 3 and the characterization test of 4 material of embodiment and photovoltaic device are similar to embodiment 1, here not
It repeats.
In summary, it can be deduced that have using the copper-based perovskite material of the class two-dimensional as the solar cell of light-absorption layer good
Light absorption, electricity conversion and air environment stability and thermal stability.
In conclusion these are only highly preferred embodiment of the present invention, it is every according to claims of the present invention and explanation
Equivalent modifications made by book belong to the range that patent of the present invention covers.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with it is other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (7)
1. a kind of solar cell based on the copper-based perovskite of two dimension, which is characterized in that from bottom to up by FTO electro-conductive glass, electricity
Sub- transport layer, mesoporous layer, the copper-based perovskite light-absorption layer of two dimension, hole transmission layer and electrode is formed.
2. a kind of solar cell based on the copper-based perovskite of two dimension according to claim 1, which is characterized in that the suction
Photosphere material includes (C6H5NH3)2CuBr4-nCln、(C6H5CH2NH3)2CuBr4-nCln、[C6H5(CH2)2NH3]2CuBr4-nClnIn
At least one, 0≤n≤4.
3. a kind of solar cell based on the copper-based perovskite of two dimension according to claim 1, which is characterized in that described
Electron transfer layer is TiO2、ZnO、SnO2One kind in electron transport material；The mesoporous layer is TiO2、ZnO、SnO2Mesoporous material
One kind in material；The hole transmission layer is 3- hexyls substituting polythiophene, 2,2', 7,7'- tetra- [N, N- bis- (4- methoxyphenyls)
Amino] one kind of -9,9'- spiral shells two in fluorenes or poly- [bis- (4- phenyl) (2,4,6- trimethylphenyls) amine] hole mobile material；
Described is one kind in gold, silver electrode to electrode.
4. a kind of solar cell based on the copper-based perovskite of two dimension according to claim 1, which is characterized in that the electricity
Son transmission layer thickness is 30-80nm；The mesoporous layer thickness is 200-600nm；The copper-based perovskite extinction layer thickness of two dimension
For 300-800nm；The thickness of hole transport layer is 30-80nm；Described is 60-120nm to thickness of electrode.
5. a kind of preparation method of the solar cell based on the copper-based perovskite of two dimension, which is characterized in that include the following steps：
(1) it prepares electron transfer layer using spin-coating method or spray pyrolysis on the FTO electro-conductive glass cleaned up and is moved back
Fire processing；
(2) spin-coating method or silk screen print method is used to prepare mesoporous layer and made annealing treatment on the electron transport layer；
(3) the copper-based perovskite light-absorption layer of two dimension is prepared by spin coating perovskite precursor liquid on mesoporous layer and is made annealing treatment；
(4) hole transmission layer is prepared using spin-coating method on the copper-based perovskite light-absorption layer of two dimension and is made annealing treatment；
(5) vapour deposition method is used to prepare to electrode on the hole transport layer.
6. a kind of preparation method of solar cell based on the copper-based perovskite of two dimension according to claim 5, feature
It is, perovskite precursor liquid is to be dissolved in ethyl alcohol by the powder of the copper-based perovskite material of two dimension to be prepared.
7. a kind of preparation method of solar cell based on the copper-based perovskite of two dimension according to claim 6, feature
It is, the preparation method of the copper-based perovskite material of two dimension specifically includes following steps：
(1) 3~8mL B solutions are taken to be mixed with 5~10mL HX solution, ice bath stirring reacts 1~3h, restores to room temperature, 50
Volatilize 1~1.5h at a temperature of~70 DEG C；
(2) it takes above-mentioned steps (1) gained reactant to be cleaned three times with ether, 1~3h is dried in vacuo at a temperature of 50~70 DEG C,
Obtain white AX powder.
(3) by CuX2With AX obtained in above-mentioned steps (2) with 1:2 molar ratio mixed dissolution in absolute ethyl alcohol, 50~
It is stirred to react 1~3h at a temperature of 70 DEG C, ice bath stirring reacts 10~15h after being cooled to room temperature；
(4) products therefrom in above-mentioned steps (3) is filtered, is dried in vacuo 1~3h after filtering at a temperature of 50~70 DEG C,
Obtain the copper-based perovskite material A of two dimension2CuBr4-nCln；
Wherein：B is aniline C6H5NH2, benzylamine C6H5CH2NH2, phenyl ethylamine C6H5(CH2)2NH2Any one of；A is corresponding with B
Anilinium ion C6H5NH3 +, benzylamine ion C6H5CH2NH3 +, phenyl ethylamine ion C6H5(CH2)2NH3 +Any one of；HX be HBr,
Any one of HCl；CuX2For CuBr2、CuCl2At least one of；0≤n≤4.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879761A (en) * | 2019-03-29 | 2019-06-14 | 西安交通大学 | A kind of non-lead perovskite photoelectric functional material, solar battery and its preparation method and application |
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| CN111081879A (en) * | 2019-11-19 | 2020-04-28 | 西安石油大学 | Perovskite light absorption layer and preparation method thereof |
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| WO2021210733A1 (en) * | 2020-04-13 | 2021-10-21 | 성균관대학교산학협력단 | Memristor element, manufacturing method therefor, and information storage device comprising same |
| KR20210127062A (en) * | 2020-04-13 | 2021-10-21 | 성균관대학교산학협력단 | Memristor device, method of manufacturing the memristor device, and memory device having the memristor device |
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