CN106784317B - The manufacturing method of the perovskite solar battery of super-thin electronic transport layer structure - Google Patents
The manufacturing method of the perovskite solar battery of super-thin electronic transport layer structure Download PDFInfo
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
- H10K30/15—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2
- H10K30/151—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2 the wide bandgap semiconductor comprising titanium oxide, e.g. TiO2
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- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The present invention is a kind of manufacturing method of the perovskite solar battery of super-thin electronic transport layer structure, makes electron transfer layer using titanium tetrachloride aqueous solution.Titanium tetrachloride substance withdrawl syndrome is 0.01-0.7mol/L in titanium tetrachloride aqueous solution.The super-thin electronic transport layer of titanium dioxide is made of titanium tetrachloride aqueous solution, forms high roughness and good monochromatic light ray photoelectric transformation efficiency, to form the perovskite solar battery with more high-photoelectric transformation efficiency.The preparation method of the perovskite solar battery of super-thin electronic transport layer structure of the present invention is simpler quick, while maintaining higher photoelectric conversion efficiency, and cost of manufacture is lower, effectively reduces fabrication cycle.
Description
Technical field
The present invention relates to the manufacturing method of perovskite solar battery, especially a kind of calcium of super-thin electronic transport layer structure
The manufacturing method of titanium ore solar battery.
Background technique
The mankind never halt the exploration of low cost, high conversion efficiency photovoltaic device.2009, perovskite solar-electricity
Pond is suggested for the first time.After in August, 2012, people achieve a series of important breakthrough to the research of the battery, and the world is learned
This great attention of art bound pair.Currently, perovskite solar battery already becomes most important research hotspot in current photovoltaic art
One of.Between short 5 or six years, the efficiency of the battery promotes 20%+ till now from 3.8% originally.It can be seen that perovskite battery
Development prospect.
As direct band-gap semicondictor, CH3NH3PbX3The photon for being greater than forbidden bandwidth to energy shows strong light
It absorbs.Its absorption coefficient even amorphous silicon shoulder to shoulder, with a thickness of 300 nm or so perovskite material just can absorb it is nearly all
Visible light. CH3NH3PbX3Light absorption and photoluminescence performance and metal halide ingredient it is closely related.Pass through element
Replace, different optical properties can be obtained.The CH for being 2.3 eV with optical band gap3NH3PbBr3For, with I element
Replace Br element, materials optical band gap can be made to become smaller, wavelength of fluorescence red shift；Replace Br element with Cl element, then can make
Optical band gap becomes larger, wavelength of fluorescence blue shift.Currently, people have been realized in CH3NH3PbX3Optical band gap and wavelength of fluorescence
Continuous regulation.CH3NH3PbI3And CH3NH3PbBr3Relative dielectric constant be respectively 4.8 and 6.5, exciton bind energy point
It Zhi You not 50 meV and 76meV.This makes the exciton in material be Wannier-Mott type, it means that at room temperature,
Photo-generate electron-hole is just able to achieve separation in material internal.In the CH prepared with solwution method3NH3PbI3In, electronics and sky
The mobility in cave reaches 10 cm2/ (Vs) is even as high as 66 cm in 20 μm of size of big crystal grain2/(V· s)。
And CH3NH3PbI3In the volume defect density of states there was only 5 × 1016/cm3Left and right, far below the organic film of solution growth
1019/cm3 Magnitude.Have benefited from low recombination rate, high carrier mobility, electronics and sky
Cave is in CH3NH3PbI3In diffusion length be greater than 100 nm, in CH3NH3PbI3–xClxIn be more up to 1
μm, it is higher by nearly an order of magnitude of absorption length of material.CH3NH3PbI3Forbidden bandwidth and AM1.5 illumination under best band
1.4 eV of gap value is closest.However Br and Cl is compared, the perovskite material containing I is easier under vapor atmosphere
It decomposes.This phenomenon can be alleviated significantly by being replaced by the part of Br or Cl element.
Perovskite solar battery is main at present, and there are many structures: Jie of poriferous titanium dioxide sees battery, without porous dioxy
Change the plane battery of titanium, the superstructure of oxide containing porous insulation (aluminum oxide, zirconium oxide), which is situated between, sees battery, inverted structure
Battery etc..
For the plane battery of no poriferous titanium dioxide, i.e., containing only one layer of compacted zone, material is usually titanium dioxide.And
Titanium dioxide is serious due to the process energy consumption of its high temperature sintering.So that the increase of the cost of battery.
And the essence of titanium dioxide high temperature sintering is then since conductivity increases after its crystallization, to be suitable for solar-electricity
Pond.But if the thickness of reduction titanium dioxide layer can be tried, thus retain its ability for attracting electronics rather than transmitting electronics,
It can yet be regarded as a kind of effective method.And this ultra-thin titanium dioxide layer and a kind of electron transfer layer of not formed densification, from
Battery structure is simplified to a certain extent.
Chinese patent 201510127861.0 discloses a kind of Ca-Ti ore type solar battery, which uses porous structure
Electronics decorative layer, although using porous structure electronics decorative layer make battery photoelectric conversion efficiency it is higher, synthesizing
The long period is needed in the process, while complex process, consume is higher, is not easy to form industrialized production.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of production method more adduction
Reason is simple, the manufacturing method of the perovskite solar battery of the super-thin electronic transport layer structure with less fabrication cycle, the party
The photoelectric conversion efficiency of the perovskite solar battery of super-thin electronic transport layer structure made of method is higher.Conductive glass of the invention
Glass layer is the FTO of glass matrix.
Technical solution used by the present invention solves the above problems is: a kind of perovskite of super-thin electronic transport layer structure is too
The manufacturing method of positive energy battery, characterized by the following steps:
Conductive glass layer is infiltrated on titanium tetrachloride aqueous solution, then rinses electro-conductive glass with deionized water, finally will
Electro-conductive glass puts 150 degree of drying 30min on hot plate, and electron transfer layer, conductive glass layer are so far formed on conductive glass layer
Processing is completed；
By CH3NH3I and PbCl2It is molten that formation perovskite in N,N-dimethylformamide is dissolved in molar ratio 5:1-1:1
Liquid, using sol evenning machine by perovskite liquid deposition processing complete conductive glass layer on, control temperature at 70 DEG C -150 DEG C, make
Obtaining the crystallization of perovskite solution becomes methylamine lead iodine polycrystalline film；
The chlorobenzene solution of hole mobile material is uniformly spin-coated on formation hole transport material in methylamine lead iodine polycrystalline film
The bed of material；
Using evaporation coating method, silver electrode layer is deposited in vapor deposition on hole transport material；
Titanium tetrachloride substance withdrawl syndrome is 0.01-0.7mol/L, the electro-conductive glass in the titanium tetrachloride aqueous solution
Layer infiltrating time in titanium tetrachloride aqueous solution is 0.5-10 hours.Too low titanium tetrachloride substance withdrawl syndrome influences titanium dioxide
The crystalline rate of titanium, while being not easy to form the electron transfer layer of suitable thickness, it not can guarantee to form photon dissipating in inside battery
It penetrates, while being unfavorable for the transmission of carrier.Excessive titanium tetrachloride substance withdrawl syndrome influences blocked up electronics easy to form and passes
Defeated layer increases the transmission range of volume carrier, reduces electron mobility.Very few infiltrating time influences the knot of titanium dioxide
Brilliant efficiency, while being not easy to form the electron transfer layer of suitable thickness, it not can guarantee to form photon in the scattering of inside battery, simultaneously
It is unfavorable for the transmission of carrier.Too long infiltrating time blocked up electron transfer layer easy to form, increases the biography of volume carrier
Defeated distance, reduces electron mobility.
The present invention forms electron transfer layer using the titanium tetrachloride aqueous solution processing surface FTO, and this method is simple, compares simultaneously
There is no the perovskite solar cell photoelectric transfer efficiency of electron transfer layer to have to be obviously improved, while comparing and adopting
It is not much different with the perovskite solar cell photoelectric transfer efficiency of porous structure electron transfer layer, but its cost of manufacture and work
Skill complexity can be substantially reduced.Electron transfer layer with a thickness of 3-100 nanometers, methylamine lead iodine polycrystalline film with a thickness of
200 nanometers -1.5 microns, hole transport material with a thickness of 50-500 nanometers, vapor deposition silver electrode layer is received with a thickness of 50-200
Rice.
Hole mobile material material of the present invention is spiro-OMeTAD, and synthesis step is as follows: by spiro-
It is molten that formation chlorobenzene is added into chlorobenzene in OMeTAD and tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithiums (Li-TFSI)
Liquid, the substance withdrawl syndrome of tetrabutyl pyridine (tBP) is the substance withdrawl syndrome of spiro-OMeTAD in above-mentioned chlorobenzene solution
80 %, the substance withdrawl syndrome of double trifluoromethanesulfonimide lithiums (Li-TFSI) are the substance withdrawl syndrome of spiro-OMeTAD
30 %.
Spiro-OMeTAD substance withdrawl syndrome is 0.5-1.5mol/L in chlorobenzene solution of the present invention.The material with
Calcium titanium
Pit wood material level-density parameter is preferable, while considering perovskite stability, the dissolubility and methylamine of spiro-OMeTAD
The dissolubility matching of lead iodine polycrystalline film is more preferable.Too low concentration is not easy to form the transport efficiency stablized and with efficient carrier,
Excessively high concentration excessively high resistance easy to form.
The whole light transmission in visible wavelength range of conductive glass layer and electron transfer layer composition of the present invention
In 80%-85%.Compared to the perovskite solar battery of not electron transfer layer, the electron transfer layer of ultra-thin titanium dioxide is reduced
Light transmission, especially in the wave-length coverage of visible light.This structure feature effectively illustrates entire super-thin electronic transport layer knot
The perovskite solar battery of structure, which has the utilization rate of photon, to be effectively obviously improved.
The whole roughness of conductive glass layer and electron transfer layer composition of the present invention is at 11-13 nanometers.It is biggish
Roughness can be conducive to electronics and generate sunken luminous effect, be conducive to the promotion of photoelectric conversion efficiency, while higher coarse scale
Higher specific surface area is illustrated, the transmission of electron hole pair can be more conducive to.
The whole monochromatic light conversion ratio of conductive glass layer and electron transfer layer composition of the present invention is in 40%-80%.It is monochromatic
Light photoelectric conversion efficiency has a significant impact to the photoelectric conversion efficiency of perovskite solar battery, super-thin electronic transport layer structure
Perovskite solar battery monochromatic light ray photoelectric transformation efficiency with higher illustrates the super-thin electronic transport layer structure under the structure
Perovskite solar battery compare do not have electron transfer layer perovskite solar battery have higher photoelectric conversion efficiency.
Compared with prior art, the super-thin electronic transport layer of titanium dioxide, shape are made of titanium tetrachloride aqueous solution by the present invention
At high roughness and good monochromatic light ray photoelectric transformation efficiency, to form the perovskite with more high-photoelectric transformation efficiency too
Positive energy battery.The preparation method of the perovskite solar battery of super-thin electronic transport layer structure of the present invention is simpler quick, together
When maintain higher photoelectric conversion efficiency, cost of manufacture is lower, effectively reduces fabrication cycle.
Detailed description of the invention
Fig. 1 is the SEM figure that the present invention implements contrast groups 1.
Fig. 2 is the SEM figure of the embodiment of the present invention 5.
Fig. 3 is the SEM figure of the embodiment of the present invention 4.
Fig. 4 is the SEM figure of the embodiment of the present invention 6.
Fig. 5 is the SEM figure of the embodiment of the present invention 1.
Fig. 6 is the SEM figure of the embodiment of the present invention 2.
Fig. 7 is the AFM figure that the present invention implements contrast groups 1.
Fig. 8 is the AFM figure of the embodiment of the present invention 5.
Fig. 9 is the AFM figure of the embodiment of the present invention 4.
Figure 10 is the AFM figure of the embodiment of the present invention 6.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
In order to more clearly show technical effect, correlation data experiment is provided.All roughness refer both in embodiment
Profile arithmetic average error.
Contrast groups
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that perovskite solution becomes CH in FTO surface crystallization3NH3PbI3Polycrystalline film (methylamine lead iodine polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), which is 5.07%, short-circuit current density 11.63mAcm-2,
Open-circuit voltage 0.902V, fill factor 0.483.
It measures SEM as shown in Figure 1, clear laminated structure is presented in the surface FTO.The thick of the surface FTO can be measured by Fig. 7
Rugosity is 11 nanometers.This contrast groups light transmission is in 84%-85%.The monochromatic light conversion efficiency of this contrast groups is in visible wavelength model
It is 35%-40% in enclosing.
Embodiment 1
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.2mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 2h of 0.2mol/L afterwards, environment temperature is controlled at 70 DEG C.Deionization is used after above-mentioned steps
Water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 10.63%(short-circuit current density 21.38mAcm-2, open-circuit voltage 0.866V,
Fill factor 0.574), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 110%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.The present embodiment
SEM as shown in figure 5, comparing Fig. 1-Fig. 3, the absorption of non-crystal titanium dioxide clearly, but still has gap compared to Fig. 4.
The average grain diameter of single titanium dioxide amorphous nano particle is 30-40 nanometers at this time, and spacing is 20-30 between neighboring die
Nanometer.The light transmission of FTO in the present embodiment after surface growth amorphous titanium dioxide granule is in 77%-80%.In this implementation
The perovskite solar battery monochrome light conversion efficiency of super-thin electronic transport layer structure is 70%-75%.
Embodiment 2
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.4mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 2h of 0.4mol/L afterwards, environment temperature is controlled at 70 DEG C.Deionization is used after above-mentioned steps
Water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 10.86%(short-circuit current density 20.40mAcm-2, open-circuit voltage 0.896V,
Fill factor 0.594), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 114%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.The present embodiment
SEM it is as shown in Figure 6.Compared to Fig. 5, the consistency of titanium dioxide has further promotion, but still has gap compared to Fig. 4.
The average grain diameter of single titanium dioxide amorphous nano particle is 40-50 nanometers at this time, and spacing is 50- between neighboring die
100 nanometers.The light transmission of FTO in the present embodiment after surface growth amorphous titanium dioxide granule is in 75%-76%.In this implementation
Super-thin electronic transport layer structure perovskite solar battery monochrome light conversion efficiency be 70%-80%.
Embodiment 3
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.01mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 2h of 0.01mol/L afterwards, environment temperature is controlled at 70 DEG C.Deionization is used after above-mentioned steps
Water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 9.09%(short-circuit current density 21.40mAcm-2, open-circuit voltage 0.917V fills out
Fill the factor 0.463), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 79%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.It is single at this time
The average grain diameter of titanium dioxide amorphous nano particle is 3-5 nanometers, and spacing is 95-100 nanometers between neighboring die.
Embodiment 4
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.04mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 2h of 0.04mol/L afterwards, environment temperature is controlled at 70 DEG C.Deionization is used after above-mentioned steps
Water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 13.42%(short-circuit current density 22.10mAcm-2, open-circuit voltage 1.040V,
Fill factor 0.584), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 165%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.The present embodiment
The SEM measured is as shown in figure 3, more apparent titanium dioxide amorphous particle occurs in the surface FTO, more compared to the SEM in embodiment 5
It is obvious.The average grain diameter of single titanium dioxide amorphous nano particle is 10-20 nanometers at this time, spacing between neighboring die
It is 85-95 nanometers.After being grown in the surface FTO by the titanium dioxide amorphous nano particle that Fig. 9 can measure the present embodiment, titanium dioxide
The roughness of titanium amorphous nano particle is 11.5 nanometers.In the present embodiment, surface grows the FTO of titanium dioxide amorphous nano particle
Light transmission is in 83%-84% in visible wavelength range.The perovskite sun of super-thin electronic transport layer structure in this implementation
Energy battery monochrome light conversion efficiency is 50%-60%.
Embodiment 5
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.04mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 0.5h of 0.04mol/L afterwards, environment temperature is controlled at 70 DEG C.After above-mentioned steps using go from
Sub- water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 10.40%(short-circuit current density 21.29mAcm-2, open-circuit voltage 0.918V,
Fill factor 0.532), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 105%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.The present embodiment
The SEM measured is as shown in Fig. 2, granular titanium dioxide amorphous particle occurs in the surface FTO, but is not obvious.It is single at this time
The average grain diameter of titanium dioxide amorphous nano particle is 3-10 nanometers, and spacing is 90-100 nanometers between neighboring die.By
The titanium dioxide amorphous nano particle that Fig. 8 can measure the present embodiment is grown in after the surface FTO, titanium dioxide amorphous nano particle
Roughness be 12.3 nanometers.In the present embodiment, surface grows the FTO visible wavelength range of titanium dioxide amorphous nano particle
Interior light transmission is in 84%-85%.The perovskite solar battery monochromatic light of super-thin electronic transport layer structure in this implementation is converted
Efficiency is 40%-50%.
Embodiment 6
Titanium tetrachloride is dissolved in deionized water, the aqueous solution of titanium tetrachloride is formed, the concentration of titanium tetrachloride is
0.04mol/L。
The FTO of glass matrix is cleaned using deionized water sonic oscillation, reuses alcohol and acetone respectively cleans 10 minutes, so
It is dipped to the titanium tetrachloride aqueous solution 10h of 0.04mol/L afterwards, environment temperature is controlled at 70 DEG C.After above-mentioned steps using go from
Sub- water is rinsed FTO, and FTO toasts 30min under the conditions of 150 DEG C after the completion of flushing.So far FTO processing is completed.
Again by CH3NH3I and PbCl2It is dissolved in n,N-Dimethylformamide (DMF) with molar ratio 3:1, forms calcium titanium
Mineral solution, using sol evenning machine by perovskite liquid deposition on above-mentioned treated FTO.By precise control of temperature at 90 DEG C
Baking 1 hour, so that the FTO surface crystallization of perovskite solution after processing is completed becomes CH3NH3PbI3Polycrystalline film (methylamine lead iodine
Polycrystalline film).
In the present embodiment, hole mobile material selects spiro-OMeTAD.By the amount spiro-OMeTAD of certain substance and
Tetrabutyl pyridine (tBP) and double trifluoromethanesulfonimide lithium (Li-TFSI) additions form chlorobenzene solution into chlorobenzene.Above-mentioned chlorine
In benzole soln the substance withdrawl syndrome of tetrabutyl pyridine (tBP) be spiro-OMeTAD substance withdrawl syndrome 80 %, double three
The substance withdrawl syndrome of fluoromethane sulfimide lithium (Li-TFSI) is 30 % of the substance withdrawl syndrome of spiro-OMeTAD.
Preferably, the substance withdrawl syndrome of spiro-OMeTAD is 0.6mol/L.
Above-mentioned chlorobenzene solution (spiro-OMeTAD concentration is 0.6mol/L) is uniformly spin-coated on methylamine lead iodine polycrystalline film
On, form hole transport material.
Using evaporation coating method, the vapor deposition vapor deposition silver electrode layer on hole transport material.
Methylamine lead iodine polycrystalline film in the present embodiment with a thickness of 600 nanometers, hole transport material with a thickness of 300 nanometers,
Silver electrode layer is deposited with a thickness of 90 nanometers.
In room temperature environment, xenon lamp simulated solar irradiation, light intensity 95.6mW/cm are used2(solar simulator model:
Newport91192A under the conditions of), perovskite solar battery (effective illumination of manufactured ultra-thin titanium dioxide amorphous layer is measured
Area is 0.07cm2) photoelectric conversion efficiency be 12.10%(short-circuit current density 21.95mAcm-2, open-circuit voltage 0.882V,
Fill factor 0.625), than not containing ultra-thin titanium dioxide amorphous layer solar battery efficiency (5.07%, short-circuit current density
11.63mAcm-2, open-circuit voltage 0.902V, fill factor 0.483) and improve about 138%.The reason of raising it is mainly ultra-thin two
Titanium oxide layer accelerates electronics transfer, reduces the compound of electrons and holes, to improve battery fill factor, short circuit current
With photoelectric conversion efficiency.Since the processing time is longer, so the thickness of titanium dioxide increases, electron-transport is by certain at this time
It influences, battery efficiency has relative to battery efficiency made of the FTO after the titanium tetrachloride aqueous solution processing 2h using 0.04mol/L
It is reduced.
It is tested by XPS, the combination that can measure the surface FTO can be respectively 458.6eV and 464.4eV, respectively correspond Ti
3/2 energy level of 2p of atom and 1/2 energy level of 2p of Ti atom, separately having combination at one can be 530.5eV, the 1s of corresponding O atom
Energy level illustrates to handle by simple titanium tetrachloride, has been sufficiently formed amorphous titanium dioxide granule on the surface FTO.The present embodiment
SEM as shown in figure 4, the surface FTO forms one layer of fine and close non-crystal titanium dioxide, can only find out the profile of part sheet FTO.
The average grain diameter of single titanium dioxide amorphous nano particle is 40-50 nanometers at this time, is at this time non-intermittent amorphous dioxy
Change titanium crystal grain.After being grown in the surface FTO by the titanium dioxide amorphous nano particle that Figure 10 can measure the present embodiment, titanium dioxide
The roughness of amorphous nano particle is 12.4 nanometers.In the present embodiment, the FTO of surface growth titanium dioxide amorphous nano particle exists
Light transmission is in 80%-82% in visible wavelength range.The perovskite solar energy of super-thin electronic transport layer structure in this implementation
Battery monochrome light conversion efficiency is 60%-70%.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to
According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair
In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (1)
1. the manufacturing method of the perovskite solar battery of super-thin electronic transport layer structure, characterized by the following steps:
Conductive glass layer is infiltrated on titanium tetrachloride aqueous solution, then electro-conductive glass is rinsed with deionized water, finally by conductive glass
Glass puts 150 degree of drying 30min on hot plate, electron transfer layer is so far formed on conductive glass layer, conductive glass layer has been handled
At；
By CH3NH3I and PbCl2It is dissolved in formation perovskite solution in n,N-Dimethylformamide with molar ratio 5:1-1:1, is used
Perovskite liquid deposition on the conductive glass layer that processing is completed, is controlled temperature at 70 DEG C -150 DEG C, so that calcium titanium by sol evenning machine
Mineral solution crystallization becomes methylamine lead iodine polycrystalline film；
The chlorobenzene solution of hole mobile material is uniformly spin-coated in methylamine lead iodine polycrystalline film and forms hole transport material；
Using evaporation coating method, silver electrode layer is deposited on hole transport material；
Prepared by the above method to be formed conductive glass layer, electron transfer layer, methylamine lead iodine polycrystalline film, hole transport material and
The laminated perovskite solar battery of silver electrode layer is deposited；
Titanium tetrachloride substance withdrawl syndrome is 0.04mol/L in the titanium tetrachloride aqueous solution, and the conductive glass layer is in tetrachloro
Changing infiltrating time in titanium aqueous solution is 2 hours, and environment temperature is controlled at 70 DEG C；
The hole mobile material is spiro-OMeTAD, and synthesis step is as follows: by spiro-OMeTAD and tetrabutyl pyridine
It is added with double trifluoromethanesulfonimide lithiums into chlorobenzene and forms chlorobenzene solution, the substance of tetrabutyl pyridine in above-mentioned chlorobenzene solution
Amount concentration be spiro-OMeTAD substance withdrawl syndrome 80%, the substance withdrawl syndrome of double trifluoromethanesulfonimide lithiums
It is the 30% of the substance withdrawl syndrome of spiro-OMeTAD；Spiro-OMeTAD substance withdrawl syndrome is in the chlorobenzene solution
0.5-1.5mol/L；The whole light transmission in visible wavelength range of the conductive glass layer and electron transfer layer composition exists
80%-85%；The whole roughness of the conductive glass layer and electron transfer layer composition is at 11-13 nanometers, the electro-conductive glass
The whole monochromatic light conversion ratio of layer and electron transfer layer composition is in 40%-80%.
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