CN110246917A - A kind of inorganic perovskite solar battery and preparation method - Google Patents
A kind of inorganic perovskite solar battery and preparation method Download PDFInfo
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- H01L31/0352—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
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Abstract
The present invention relates to a kind of inorganic perovskite solar battery and preparation methods, belong to technical field of solar batteries.The present invention mainly overcomes shortcoming in the prior art, proposes a kind of inorganic perovskite solar battery and preparation method, including electron transfer layer, inorganic perovskite light-absorption layer, preceding oxidation hole transmission layer, carbon electrode are successively prepared on transparent conductive substrate；Prepare the detailed process of the preceding oxidation hole transmission layer are as follows: the Spiro-OMeTAD solution of oxygen oxidation is prepared by spin coating method.The present invention is used the method for hole premature oxidation, it can be oxidized before hole solution is prepared into hole transmission layer, avoid contact of inorganic perovskite during Hole oxidation with water, to avoid inorganic perovskite solar battery to the loss of its own, guaranteeing the success rate and reliability of experiment during the preparation process.
Description
Technical field
The present invention relates to a kind of inorganic perovskite solar battery and preparation methods, belong to technical field of solar batteries.
Background technique
Solar energy is a kind of huge cleanliness without any pollution energy of reserves, influenced by geographical environment it is small, by section all over the world
Scholars favor.Photothermal conversion and photoelectric conversion are that current people utilize the main two ways of solar energy, wherein solar energy
Power conversion technology has become one of the approach for solving fossil energy crisis most prospect.Currently, solar battery, which mainly faces, to be needed
It solves the problems, such as: (1) improving its incident photon-to-electron conversion efficiency and the service life of battery, (2) are dropped using new technology and material
The cost of low production.In recent years, perovskite solar battery is due to its excellent photoelectric properties, such as high absorption coefficient, low exciton
It is received significant attention in conjunction with energy and gap tunable.The development of perovskite solar battery is swift and violent, in a few years, device effect
Rate alreadys exceed 23%.However, the stability difference of perovskite solar battery seriously hinders their commercialization.In various calcium
In titanium ore solar battery, carbon-based perovskite solar battery is seemingly most hopeful to solve stability problem.Because of carbon materials
Material is stablized, and has good waterproofness.While the transfer efficiency of carbon-based perovskite solar battery grows steadily, carbon
Device stability and the large area manufacture of based perovskite solar battery also have made great progress, this has been well demonstrated that calcium titanium
Perhaps, mine solar battery can realize commercialization in the near future.
Due to the presence of organic principle in organic inorganic hybridization perovskite light absorbing layer, effect of the perovskite in humidity and heat
Under be extremely easy in decomposition, cause stability test poor, this not only proposes higher requirement to the working condition of battery, also limits
Its application in surroundings.Therefore, people begin trying to improve perovskite as light absorbing layer using inorganic perovskite
The stability of solar battery.CsSnI was used for the first time in inorganic perovskite in 20123As inorganic perovskite light-absorption layer, obtain
0.88% PCE (Z.Chen, J.J.Wang, Y.Ren, C.Yu, K.Shum, Appl.Phys.Lett.2012,101,
093901.), CsPbI was used by 20183Had been achieved for as inorganic perovskite absorbed layer be more than 17% efficiency
(Y.Wang,T.Y.Zhang,M.Kan,Y.X.Zhao,Bifunctional Stabilization of All-Inorganic
α-CsPbI3Perovskite for 17%Efficiency Photovoltaics.JACS.2018).
Inorganic perovskite (such as CsPbI3Deng) in the light absorber being seldom reported as in PSC in early days, because they are in room
The non-perovskites phase such as yellow is typically exhibited under temperature, and black cube P Perovskite Phase is at room temperature in environment item needed for photoelectric conversion
(W.Ahmad, J.Khan, G.Niu, J.Tang, Solar RRL 2017,1,1700048 unstable under part；b)
T.S.Ripolles,K.Nishinaka,Y.Ogomi,Y.Miyata,S.Hayase,Sol.Energy Mater.Sol.Cells
2016,144,532.).Eperon et al. (G.E.Eperon, G.M.Paterno, R.J.Sutton, A.Zampetti,
A.A.Haghighirad, F.Cacialli, H.J.Snaith, J.Mater.Chem.A 2015,3,19688) for the first time in PSC
Apply black α-CsPbI3, because they have found to stablize in black phase when handling in this black Xiang Wu air atmosphere.
Later research discovery is mainly that the water in air makes the inorganic perovskite of black α phase become other without photovoltaic property
Phase.Therefore just all steps are carry out in glove box to inorganic perovskite solar battery during the preparation process, avoid with
The contact of steam.
Spiro-OMeTAD is the hole transport layer material being most widely used because its have with perovskite light-absorption layer compared with
For matched energy level, the hole of calcium titanium ore bed generation when carrying out photoelectric conversion can be efficiently extracted, generates higher conversion effect
Rate.After the completion of hole transmission layer preparation, it usually needs aoxidized to hole transmission layer to improve its electric conductivity, otherwise will
Seriously affect the transfer efficiency of battery.Traditional mode of oxidizing is in electrically conducting transparent substrate, electron transfer layer, perovskite extinction
Layer, hole transmission layer carried out after prepare in glove box, by device global transfer into the environment for being rich in oxygen oxidation 2~
48h or even longer.Although some laboratories can guarantee device in oxygen atmosphere, other such as humidity, temperature are avoided
The influence for device such as degree, but this condition generally requires expensive equipment and could complete, while perovskite light-absorption layer sheet
Cause to decompose in being rich in also react with oxygen in the environment of oxygen.And inorganic perovskite light-absorption layer is for the sensitive journey of humidity
Du Genggao can cause to decompose in transfer process with the moisture in air, thus generally require more expensive equipment,
Increasingly complex technical skill avoids any point humidity completely.
Using the hole method of preceding oxidation, can prepared when hole or solution just by hole complete oxidation
Additional oxidation step is not needed later at hole transmission layer.Inorganic perovskite solar battery is avoided in the nothing of preparation process
The problem of machine perovskite light-absorption layer and moisture, perovskite light-absorption layer resolution problem caused by being contacted for a long time with oxygen, together
When saved expensive necessary instrument expense, enable more enterprises and laboratory to carry out inorganic perovskite solar-electricity
The work of pond related experiment.This method is not only only applicable to protect inorganic perovskite solar battery, simultaneously for protection
PbI3、FAPbI3、FA1-xMAxPbI3Equal hybrid inorganic-organics perovskite solar battery equally has applicability.
The use that metal electrode such as gold, silver etc. can be not only reduced using carbon electrode, is further reduced the cost, is used simultaneously
Carbon electrode can also obtain and use transfer efficiency similar in metal electrode.Meng Qingbo of the Chinese Academy of Sciences et al. is handed over using ambient solvent
Carbon electrode has been prepared in the method for changing, and achieves the transfer efficiency more than 19%, and same battery uses gold electrode, and also only 20%
Efficiency (Zhang H, Xiao J, Shi J, et al.Self-Adhesive Macroporous Carbon Electrodes
for Efficient and Stable Perovskite Solar Cells[J].Advanced Functional
Materials,2018.).Meanwhile vapor deposition, the sputtering etc. used in the preparation compared to electrodes such as gold, silver needs expensive device
Mode, carbon electrode can be more suitable industrialization using the methods of knife coating, mounting method manufacture electrode on a large scale.
Summary of the invention
The present invention mainly overcomes shortcoming in the prior art, proposes a kind of inorganic perovskite solar battery and system
Preparation Method.
The present invention solves technical solution provided by above-mentioned technical problem: a kind of inorganic perovskite solar battery preparation
Method, including electron transfer layer, inorganic perovskite light-absorption layer, preceding oxidation hole transport are successively prepared on transparent conductive substrate
Layer, carbon electrode；
Prepare the detailed process of the preceding oxidation hole transmission layer are as follows: pass through the Spiro-OMeTAD solution of oxygen oxidation
Spin coating method is prepared.
Further technical solution is that the Spiro-OMeTAD solution is prepared by following steps:
It is equipped with the chlorobenzene solution of the Spiro-OMeTAD of 20~100mg/mL first, is equipped with double the three of 400~600mg/mL
The acetonitrile solution of methyl fluoride sulfonic acid Asia amide lithium；
The acetonitrile solution of the Spiro-OMeTAD chlorobenzene solution of 1mL, the TBP solution of 28.8 μ L and 17.5 μ L is taken to mix again,
Stirring 2 hours or more.
Further technical solution is the oxygen oxidation process of the Spiro-OMeTAD solution are as follows: under atmospheric environment
Oxygen is passed through in molten Spiro-OMeTAD solution liquid bottle, Spiro-OMeTAD solution is aoxidized；The time wherein aoxidized
For 1~100min；The purity of the oxygen is 99.0000~99.9999%.
Further technical solution is the oxygen oxidation process of the Spiro-OMeTAD solution are as follows: under vacuum conditions
Oxygen is passed through in molten Spiro-OMeTAD solution liquid bottle, Spiro-OMeTAD solution is aoxidized；The time wherein aoxidized
For 1~100min；The purity of the oxygen is 99.0000~99.9999%.
Further technical solution is, the revolving speed in the spin coating method is 1000~8000rpm, spin-coating time is 20~
60s。
Further technical solution is, it is described before oxidation hole transmission layer with a thickness of 30~100nm.
Further technical solution is that the inorganic perovskite light-absorption layer is CsPbI3、CsPbI2Br、CsPbIBr2、
CsPbBr3、Cs2SnI6、Cs2PbBr6、Cs2PbI6、Cs3Sb2I9、Rb3Sb2I9、Cs3Bi2I9、Cs2BiAgCl6、Cs2BiAgBr6、
CsPb1-xSrxI2Br、CsPb0.9Sn0.1IBr2、CsSnI3、CsSnCl3、CsSnI3-xClx、CsSnBr3、CsSnI3-xBrx、CsGeI3
One or more of, with a thickness of 200~1000nm.
Further technical solution is, the carbon electrode be graphite, carbon black, carbon nanotube, carbon quantum dot, graphene one
Kind is a variety of, with a thickness of 3~200 μm.
Further technical solution is that the transparent conductive substrate is indium tin oxide-coated glass；In transparent conductive substrate
On prepare electron transfer layer before need to clean transparent conductive substrate, cleaning process are as follows: use dish washing liquid, deionized water, second
Alcohol, deionized water and ethyl alcohol are successively cleaned by ultrasonic 10~30min, are then dried up with nitrogen stream.
A kind of inorganic perovskite solar battery, is prepared using the above method.
Beneficial effects of the present invention: the present invention, as light absorbing layer, is had using inorganic perovskite compared to widely used
Machine inorganic hybridization perovskite, inorganic perovskite have better repellence to temperature, which makes battery in use, storage process
In be affected by temperature it is smaller, thus can retention property at relatively high temperatures, to realize that application creates condition in market for it.This hair
It is bright to use Spiro-OMeTAD as hole transmission layer, compared to other hole transmission layers, Spiro-OMeTAD and inorganic calcium titanium
The energy level of mine light-absorption layer more matches, while having more mature preparation process.Repellence of the inorganic perovskite for humidity
Weaker, traditional Hole oxidation mode are as follows: prepare electron transfer layer, inorganic calcium titanium ore bed, hole transport on conductive substrates
Layer, then hole transmission layer is placed in oxygen atmosphere and is aoxidized, this method for the more demanding of oxidation furnaces, and
It is difficult to ensure that the inorganic calcium titanium ore bed under oxidation process hole-transporting layer is not contacted with water, so that inorganic perovskite loses photovoltaic
Characteristic.Using by the method for hole premature oxidation, it can be oxidized, avoid before hole solution is prepared into hole transmission layer
Contact of inorganic perovskite during Hole oxidation with water, to avoid inorganic perovskite solar battery in preparation process
In loss to its own, guarantee the success rate and reliability of experiment.In conjunction with carbon material electrode, full-inorganic perovskite can be promoted
Solar cell properties and reduction manufacturing cost, help to realize the large-scale production of perovskite solar battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of perovskite solar battery of the invention；
Fig. 2 is the J-V curve graph of perovskite solar battery in embodiment 1；
Fig. 3 is the J-V curve graph of perovskite solar battery in embodiment 4.
Specific embodiment
Further description is done to the present invention below with reference to embodiment and attached drawing.
A kind of inorganic perovskite preparation method of solar battery of the invention, including successively prepared on transparent conductive substrate
Electron transfer layer, inorganic perovskite light-absorption layer, preceding oxidation hole transmission layer, carbon electrode；
Prepare the detailed process of the preceding oxidation hole transmission layer are as follows: pass through the Spiro-OMeTAD solution of oxygen oxidation
Spin coating method is prepared；
Specifically includes the following steps:
Step 1, cleaning transparent conductive substrate, and electron transfer layer is prepared on transparent conductive substrate；
Step 2, that raw material needed for inorganic perovskite according to coherent element are configured to inorganic perovskite presoma is molten
Liquid；
Step 3, the inorganic perovskite precursor solution for preparing step 2 are spun on electron-transport layer surface, respectively 40~
50 DEG C and 120~400 DEG C 2~10min of annealing, make film crystallize to obtain inorganic perovskite light-absorption layer；
Step 4 will obtain after completely dissolution preceding oxidation in Spiro-OMeTAD, Li-TFSI solution, TBP addition chlorobenzene
Hole transmission layer precursor liquid, the oxygen being passed through are aoxidized, and oxidation is then sealed；
Step 4 solution is spun on inorganic perovskite light-absorption layer obtained by step 3 by step 5, aoxidizes hole transport before obtaining
Layer；
Step 6 prepares carbon electrode on preceding oxidation hole transmission layer, obtains inorganic perovskite solar battery.
Preparation method of the present invention is simple, and it is right in inorganic perovskite solar battery preparation process to can be avoided with the method
The damage of battery itself can promote full-inorganic perovskite solar cell properties and reduce manufacturing cost, help to realize calcium
The large-scale production of titanium ore solar battery.
Using full-inorganic perovskite solar battery obtained by the above method, as shown in Figure 1 comprising stack gradually assembling
Transparent conductive electrode 1, electron transfer layer 2, inorganic perovskite light-absorption layer 3, preceding oxidation hole transmission layer 4 and carbon electrode 5.
Preferably, conductive substrates described in step 1 be fluorine-doped tin oxide electro-conductive glass, cleaning process be with dish washing liquid,
Deionized water, ethyl alcohol, acetone and ethyl alcohol are successively cleaned by ultrasonic 10~30min, are then dried up with nitrogen stream.
Preferably, the solvent in step 2 in inorganic perovskite precursor solution is DMSO or volume ratio is 4:1 DMSO and
DMF mixed solution, the concentration of inorganic perovskite precursor solution are 0.5~0.9
mol/L。
Preferably, described in step 3 when inorganic perovskite light-absorption layer spin coating, first 300~700rpm low speed 3~6s of spin coating,
Then 1500~3000rpm high speed spin coating 30s.
Preferably, the Li-TFSI solution described in step 4 by 2~5 μ l acetonitriles dissolution 1mg Li-TFSI stirring 5~
60min is formulated.
Preferably, Spiro-OMeTAD, Li-TFSI solution described in step 4, TBP are added sufficiently to dissolve in chlorobenzene and be adopted
Method is vibration, stirring, microwave, ultrasound, and dissolution time is 2~500min.
Preferably, the oxygen purity that step 4 is passed through be 99.0000%~99.9999%, be passed through the oxygen time be 1~
20min, being sealed oxidization time is 1~30 day.
Embodiment 1
The first, the cleaning of conductive substrates: by the ITO electro-conductive glass substrate of well cutting successively in acetone, isopropanol and ethyl alcohol
Middle each 30min of ultrasonic cleaning, is then dried up with nitrogen stream；
The second, the preparation of electron transfer layer: UV ozone is carried out to ITO electro-conductive glass substrate and is handled 15 minutes, using rotation
Coating deposits one layer of SnO on the surface ITO cleaned2It is electron transfer layer, 150 DEG C of annealing 30min；
Third, CsPbI2The preparation of Br light-absorption layer: by the PbI of 0.277g2, 0.220g PbBr2(DMSO) and 0.312g
CsI is dissolved in the DMSO solution of 1000 μ L, is then spin coated onto SnO2Surface；
Specific spin coating process is the spin coating of 500rpm low speed 5s, 2500rpm high speed spin coating 30s；First 42 DEG C of annealing after spin coating is good
2min, then 160 DEG C of annealing 10min, the precursor thin-film for forming spin coating crystallize to obtain full-inorganic perovskite light-absorption layer；
4th, it takes the Li-TFSI stirring and dissolving of 520mg in the acetonitrile of 1mL, obtains Li-TFSI- acetonitrile solution；
The Spiro-OMeTAD that balance weighs 72.3mg is placed in 5ml reagent bottle, takes 1ml chlorobenzene to pour into reagent with liquid-transfering gun
In bottle, stirring and dissolving adds the Li-TFSI- acetonitrile solution of the TBP and 17.5 μ L of 28.8 μ L, stirring；Spiro-OMeTAD,
Li-TFSI solution, TBP are added in chlorobenzene and obtain hole solution after completely dissolution, oxygen 5min are passed through in atmospheric environment, then
It is sealed oxidation；
5th, using 3000rpm, the hole transmission layer solution prepared is spun on CsPbI by the spin coating proceeding of 30s2Br
On film, do not aoxidize；
6th, the carbon electrode for scratching one layer 30 μm on the hole transport layer, to complete the system of perovskite solar battery
It is standby.
As shown in Fig. 2, the battery efficiency is 7.89%.
Embodiment 2
In this example, carbon electrode with a thickness of 20 μm, so that precursor thin-film crystalline is helped inorganic perovskite light-absorption layer
Annealing process are as follows: 30 DEG C, 5min；180 DEG C, 2min.Other steps are same as Example 1.In this example, inorganic perovskite is too
The efficiency 6.48% of positive energy battery.
Embodiment 3
In this example, carbon electrode with a thickness of 25 μm, prepare CsPbI2Solvent used in Br precursor solution is DMF.Its
His step is same as Example 1.In this example, the efficiency of inorganic perovskite solar battery is 5.08%.
Embodiment 4
The first, the cleaning of conductive substrates: by the ITO electro-conductive glass substrate of well cutting successively in acetone, isopropanol and ethyl alcohol
Middle each 30min of ultrasonic cleaning, is then dried up with nitrogen stream；
The second, the preparation of electron transfer layer: UV ozone is carried out to ITO conductive layer and handles 15min, using spin-coating method clear
The washed surface FTO deposits one layer of SnO2It is electron transfer layer, 150 DEG C of annealing 30min；
Third, CsPbI2The preparation of Br light-absorption layer: by the PbI of 0.2770g2, 0.2200g PbBr2(DMSO) and
The CsI of 0.3120g is dissolved in the DMSO solution of 1000 μ L, is then spin coated onto SnO2Surface；
Specific spin coating process is the spin coating of 500rpm low speed 5s, 2500rpm high speed spin coating 30s；First 42 DEG C of annealing after spin coating is good
2min, then 160 DEG C of annealing 10min, the precursor thin-film for forming spin coating crystallize to obtain full-inorganic perovskite light-absorption layer；
4th, it takes the Li-TFSI stirring and dissolving of 520mg in the acetonitrile of 1mL, obtains Li-TFSI- acetonitrile solution；
The Spiro-OMeTAD that balance weighs 72.3mg is placed in 5ml reagent bottle, takes 1ml chlorobenzene to pour into reagent with liquid-transfering gun
In bottle, stirring and dissolving adds the Li-TFSI- acetonitrile solution of the TBP and 17.5 μ L of 28.8 μ L, stirring；Spiro-OMeTAD,
Li-TFSI solution, TBP are added in chlorobenzene and obtain hole solution after completely dissolution, are passed through oxygen 6min, are then sealed oxygen
Change；
5th, using 4000rpm, the hole transmission layer solution prepared is spun on CsPbI by the spin coating proceeding of 30s2Br
On film, do not aoxidize；
6th, the carbon electrode for scratching one layer 30 μm on the hole transport layer, to complete the system of perovskite solar battery
It is standby.
As shown in figure 3, the battery efficiency is 9.67%.
Embodiment 5
The first, the cleaning of conductive substrates: by the ITO electro-conductive glass substrate of well cutting successively in acetone, isopropanol and ethyl alcohol
Middle each 30min of ultrasonic cleaning, is then dried up with nitrogen stream.
The second, the preparation of electron transfer layer: UV ozone is carried out to ITO conductive layer and handles 15min, using spin-coating method clear
The washed surface FTO deposits one layer of SnO2It is electron transfer layer, 150 DEG C of annealing 30min；
Third, CsPbI2The preparation of Br light absorbing layer: by the PbI of 0.2770g2, 0.2200g PbBr2(DMSO) and
The CsI of 0.3120g is dissolved in the DMSO solution of 1000 μ L, is then spin coated onto SnO2Surface；
Specific spin coating process is the spin coating of 500rpm low speed 5s, 2500rpm high speed spin coating 30s；First 42 DEG C of annealing after spin coating is good
2min, then 160 DEG C of annealing 10min, the precursor thin-film for forming spin coating crystallize to obtain full-inorganic perovskite light absorbing layer.
5th, it takes the Li-TFSI stirring and dissolving of 520mg in the acetonitrile of 1mL, obtains Li-TFSI- acetonitrile solution；
The Spiro-OMeTAD that balance weighs 72.3mg is placed in 5ml reagent bottle, takes 1ml chlorobenzene to pour into reagent with liquid-transfering gun
In bottle, stirring and dissolving adds the Li-TFSI- acetonitrile solution of the TBP and 17.5 μ L of 28.8 μ L, stirring；Spiro-OMeTAD,
Li-TFSI solution, TBP are added in chlorobenzene and obtain hole solution after completely dissolution, are passed through oxygen 3min, are then sealed oxygen
Change；
5th, using 6000rpm, the hole transmission layer solution prepared is spun on CsPbI by the spin coating proceeding of 30s2Br
On film, do not aoxidize.
6th, one layer of carbon electrode is scratched on the hole transport layer, to complete the preparation of perovskite solar battery.
The above is not intended to limit the present invention in any form, although the present invention takes off through the foregoing embodiment
Show, however, it is not intended to limit the invention, any person skilled in the art, is not departing from technical solution of the present invention range
It is interior, made when the technology contents using the disclosure above and change or be modified to the equivalent embodiments of equivalent variations a bit, but it is all not
Be detached from technical solution of the present invention content, according to the technical essence of the invention it is to the above embodiments it is any it is simple modification,
Equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of inorganic perovskite preparation method of solar battery, which is characterized in that including successively being made on transparent conductive substrate
Standby electron transfer layer, inorganic perovskite light-absorption layer, preceding oxidation hole transmission layer, carbon electrode；
Prepare the detailed process of the preceding oxidation hole transmission layer are as follows: the Spiro-OMeTAD solution of oxygen oxidation is passed through into spin coating
Method is prepared.
2. a kind of inorganic perovskite preparation method of solar battery according to claim 1, which is characterized in that described
Spiro-OMeTAD solution is prepared by following steps:
It is equipped with the chlorobenzene solution of the Spiro-OMeTAD of 20~100mg/mL first, is equipped with double fluoroforms of 400~600mg/mL
The acetonitrile solution of base sulfonic acid Asia amide lithium；
The acetonitrile solution of the Spiro-OMeTAD chlorobenzene solution of 1mL, the TBP solution of 28.8 μ L and 17.5 μ L is taken to mix again, stirring 2
Hour or more.
3. a kind of inorganic perovskite preparation method of solar battery according to claim 2, which is characterized in that described
The oxygen oxidation process of Spiro-OMeTAD solution are as follows: oxygen is passed through molten Spiro-OMeTAD solution liquid bottle under atmospheric environment
In, Spiro-OMeTAD solution is aoxidized；The time wherein aoxidized is 1~100min；The purity of the oxygen is
99.0000~99.9999%.
4. a kind of inorganic perovskite preparation method of solar battery according to claim 2, which is characterized in that described
The oxygen oxidation process of Spiro-OMeTAD solution are as follows: oxygen is passed through molten Spiro-OMeTAD solution liquid bottle under vacuum conditions
In, Spiro-OMeTAD solution is aoxidized；The time wherein aoxidized is 1~100min；The purity of the oxygen is
99.0000~99.9999%.
5. a kind of inorganic perovskite preparation method of solar battery according to claim 1, which is characterized in that the spin coating
Revolving speed in method is 1000~8000rpm, and spin-coating time is 20~60s.
6. a kind of inorganic perovskite preparation method of solar battery according to claim 1, which is characterized in that the preceding oxygen
Change hole transmission layer with a thickness of 30~100nm.
7. a kind of inorganic perovskite preparation method of solar battery according to claim 1, which is characterized in that described inorganic
Perovskite light-absorption layer is CsPbI3、CsPbI2Br、CsPbIBr2、CsPbBr3、Cs2SnI6、Cs2PbBr6、Cs2PbI6、Cs3Sb2I9、
Rb3Sb2I9、Cs3Bi2I9、Cs2BiAgCl6、Cs2BiAgBr6、CsPb1-xSrxI2Br、CsPb0.9Sn0.1IBr2、CsSnI3、
CsSnCl3、CsSnI3-xClx、CsSnBr3、CsSnI3-xBrx、CsGeI3One or more of, with a thickness of 200~
1000nm。
8. a kind of inorganic perovskite preparation method of solar battery according to claim 1, which is characterized in that the carbon electricity
The extremely one or more of graphite, carbon black, carbon nanotube, carbon quantum dot, graphene, with a thickness of 3~200 μm.
9. a kind of inorganic perovskite preparation method of solar battery according to claim 8, which is characterized in that described transparent
Electrically-conductive backing plate is indium tin oxide-coated glass；Prepared on transparent conductive substrate need before electron transfer layer to transparent conductive substrate into
Row cleaning, cleaning process are as follows: successively it is cleaned by ultrasonic 10 with dish washing liquid, deionized water, ethyl alcohol, deionized water and ethyl alcohol~
Then 30min is dried up with nitrogen stream.
10. a kind of inorganic perovskite solar battery, which is characterized in that utilize the described in any item method systems of claim 1-9
It is standby to form.
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Application publication date: 20190917 |