CN209087912U - A kind of perovskite solar battery structure - Google Patents
A kind of perovskite solar battery structure Download PDFInfo
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- CN209087912U CN209087912U CN201821992289.XU CN201821992289U CN209087912U CN 209087912 U CN209087912 U CN 209087912U CN 201821992289 U CN201821992289 U CN 201821992289U CN 209087912 U CN209087912 U CN 209087912U
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Abstract
The utility model discloses a kind of perovskite solar battery structure, including spaced first electrode and second electrode；At least two layers compound perovskite activity precursor layer is equipped between first electrode and second electrode.The second electrode that solar battery prepared by the utility model includes first electrode, is spaced apart with the first electrode, and at least two active layers being arranged between the first electrode and second electrode；Two active layers are pressed after being prepared respectively using sequence and inverted order preparation method, avoid the solvent damage effect avoided in different component perovskite preparation process.The utility model two active layers utilize thermal diffusion process, form the perovskite active layer with the proportion variation of certain gradient, the active layer constructs the orientation gradual change bending of fermi level, has the characteristics that homojunction, be conducive to the orientation conduction of exciton, the efficiency of transmission of exciton can be promoted, and then promotes the performance of battery.
Description
Technical field
The utility model belongs to technical field of solar batteries, in particular to a kind of perovskite solar battery structure.
Background technique
The Ca-Ti ore type solar battery and light emitting diode of discovered in recent years are due to high conversion efficiency, low cost, environment
Friendly, by more and more extensive concern the advantages that product flexibleization.Wherein, the light of novel perovskite solar battery
Photoelectric transformation efficiency improves several times in recent years, shows very excellent photoelectric properties.Ca-Ti ore type solar battery
Exciton generate, diffusion and collect, directly affect the performance of battery.
Traditional perovskite solar battery structure according to sequence from left to right as shown in Fig. 2, be sequentially prepared corresponding
Membrane structure ultimately forms the single layer organic-inorganic hybrid structure perovskite active layer comprising one-component single crystal form, swashs
Son separation and collection efficiency are lower, influence the performance of entire perovskite solar battery.
Utility model content
The purpose of this utility model is to provide a kind of perovskite solar battery structures, to solve the above technical problems.
The utility model construct it is a kind of with fermi level directional curvature, homojunction property, with specific direction, specific change of gradient
The solar cell device in perovskite activated centre helps to promote battery with better exciton dissociation and collection efficiency
Performance.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of perovskite solar battery structure, including spaced first electrode and second electrode；First electrode and
At least two layers compound perovskite activity precursor layer is equipped between second electrode.
Further, described at least two layers compound perovskite activity precursor layer includes compound the first perovskite activity
Precursor layer and the second perovskite activity precursor layer；First perovskite activity precursor layer and the second perovskite activity presoma
Gradient distribution layer is formed between layer.
Further, described at least two layers compound perovskite activity precursor layer includes three layers or three layers or more, phase
Gradient distribution layer was formed between adjacent two layers of compound perovskite activity precursor layer.
Further, gradient distribution layer forms the ladder of perovskite activity presoma along the direction of first electrode to second electrode
Degree distribution, and then constitute the orientation gradual change bending of fermi level.
Further, first electrode is ito transparent electrode, and second electrode is nano-silver thread electrode.
Further, electron-transport is equipped between first electrode and at least two layers compound perovskite activity precursor layer
Layer；Hole transmission layer is equipped between second electrode and at least two layers compound perovskite activity precursor layer.
Compared with the existing technology, the utility model has the following beneficial effects: solar-electricity prepared by the utility model
The second electrode that pond includes first electrode, is spaced apart with the first electrode, and the first electrode and second electrode it
Between at least two active layers that are arranged；After two active layers are prepared respectively using sequence and inverted order preparation method, pressed under solid-state
It forms, avoids conventional solution method, due to the solvent damage effect in different component perovskite preparation process, multilayer can not be formed
The problem of continuous gradation perovskite thin film.
The utility model two active layers utilize thermal diffusion process, and being formed has the perovskite of certain gradient proportion variation living
Property layer, the active layer construct fermi level orientation gradual change bending, have the characteristics that homojunction, be conducive to exciton orientation biography
It leads, the efficiency of transmission of exciton can be promoted, and then promote the performance of battery.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of perovskite solar battery structure of the utility model；
Fig. 2 is traditional perovskite solar battery structure；
Fig. 3 is a kind of perovskite solar battery structure energy band schematic diagram before thermal diffusion of the utility model；
Fig. 4 is a kind of perovskite solar battery structure prepared by the preferred embodiment in the utility model 1 and existing structure
Contrast schematic diagram.
Specific embodiment
When describing the embodiments of the present invention, for the sake of clarity, specific term has been used.However, this reality
Selected specific term is not intended to be limited to novel.It should be appreciated that each particular element includes that similar method is run to realize class
Like all technically equivalent ones of purpose.
The utility model is described in further detail with reference to the accompanying drawing.
Refering to Figure 1, a kind of perovskite solar battery structure of the utility model be gradient Ca-Ti ore type too
Positive energy battery device structure, including spaced transparent electrode substrate 102 and second electrode 110；102 He of transparent electrode substrate
The first perovskite activity precursor layer 105 and the second perovskite activity precursor layer 107 are equipped between second electrode 110；First
Transition zone is formed by thermal diffusion between perovskite activity precursor layer 105 and the second perovskite activity precursor layer 107.The calcium titanium
Mine solar battery structure has multiple active material layers and/or material between transparent electrode substrate 102 and second electrode 110
Layer, such as electron transfer layer 104 and hole transmission layer 108.
Transition zone is formed between first perovskite activity precursor layer 105 and the second perovskite activity precursor layer 107, is made
It obtains and forms perovskite activity forerunner between the first perovskite activity precursor layer 105 and the second perovskite activity precursor layer 107
The distribution gradient of body, improves exciton transfer and collection efficiency.
Refering to Figure 1, a kind of perovskite solar battery structure of the utility model be gradient Ca-Ti ore type too
Positive energy battery device structure, preparation method include:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area is unlimited, and (this example is 5 × 5cm2), such product has the commercial prod of scale volume production can be straight
Connect use.Before use, electrode surface successively should be ultrasonically treated using deionized water, acetone, isopropanol respectively, then using purple
Outer smooth cleaning machine cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 5-100mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；It applies
After cloth in nitrogen, 80-200 DEG C of annealing drying.The final thickness that obtains is about 10-100nm.
3) the first perovskite activity precursor layer 105, is prepared on 104 surface of electron transfer layer and obtains the area n multilayered structure: knot
Structure is (RNH3)AXnY3-n(R=alkyl；A=Pb, Sn；X, Y=Cl, Br, I；N is the real number of 0-3), it is preferable to use
CH3NH3PbCl3, solvent DMF, be made into mass fraction be 20-35% slurry；Blade coating speed is 10-30mm/s；Coating
Temperature is room temperature；Scraper and substrate spacing are 50 μm；Through 100-140 DEG C annealing 5-10 minutes in nitrogen after coating.It finally obtains
Perovskite activity precursor layer 105 with a thickness of 200-500nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 10-20mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；Through 70-100 DEG C of annealing in nitrogen after coating
10-20 minutes.Finally obtain the second electrode 110 that thickness is about 40-100nm.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 10-30mm/s；Coating temperature is 45-70 DEG C；Scraper and substrate spacing are 50 μm；
Through 80-100 DEG C annealing 10-20 minutes in nitrogen after coating.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, is prepared on 108 surface of hole transmission layer and obtains the area p multilayered structure: knot
Structure is (RNH3)AXnY3-n(R=alkyl；A=Pb, Sn；X, Y=Cl, Br, I；N is the real number of 0-3), solvent DMF is made into matter
Measure the slurry that score is 20-35%；Blade coating speed is 10-20mm/s；Coating temperature is room temperature；Scraper is with substrate spacing
50μm；Through 100-140 DEG C annealing 5-10 minutes in nitrogen after coating.The thickness of finally obtained perovskite activity precursor layer 107
Degree is 200-500nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.001-1MPa, 130-150 DEG C annealing 10-30 minutes, are obtained in vacuum
Obtain a kind of perovskite solar battery structure of the utility model.
Embodiment 1
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 25mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；Coating
Afterwards in nitrogen, 150 DEG C of annealing dryings.The final thickness that obtains is about 20nm.
3) the first perovskite activity precursor layer 105, which is prepared, on 104 surface of electron transfer layer obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 300nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 10mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It anneals 15 minutes after coating through 80 DEG C in nitrogen.
Finally obtain the second electrode 110 that thickness is about 70nm.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 20mm/s；Coating temperature is 60 DEG C；Scraper and substrate spacing are 50 μm；After coating
It anneals 15 minutes through 90 DEG C in nitrogen.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, which is prepared, on 108 surface of hole transmission layer obtains the area p multilayered structure: material
Material is CH3NH3PbI3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 107 with a thickness of 300nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.01MPa anneal 20 minutes for 135 DEG C in vacuum, and it is practical new to obtain this
A kind of perovskite solar battery structure of type.
After tested, perovskite solar battery structure prepared by embodiment 1, open pressure be 1.11V, current density is
23.1mA/cm2, efficiency 19.2%.
Embodiment 2
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 100mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；Coating
Afterwards in nitrogen, 150 DEG C of annealing dryings.The final thickness that obtains is about 10nm.
3) the first perovskite activity precursor layer 105, which is prepared, on 104 surface of electron transfer layer obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 300nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 10mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It is moved back 15 minutes after coating through 80 DEG C in nitrogen.Most
The second electrode 110 that thickness is about 70nm is obtained eventually.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 20mm/s；Coating temperature is 60 DEG C；Scraper and substrate spacing are 50 μm；After coating
It anneals 15 minutes through 90 DEG C in nitrogen.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, which is prepared, on 108 surface of hole transmission layer obtains the area p multilayered structure: material
Material is CH3NH3PbI3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 107 with a thickness of 300nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.01MPa anneal 20 minutes for 135 DEG C in vacuum, and it is practical new to obtain this
A kind of perovskite solar battery structure of type.
Embodiment 3
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 100mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；Coating
Afterwards in nitrogen, 150 DEG C of annealing dryings.The final thickness that obtains is about 10nm.
3) the first perovskite activity precursor layer 105, which is prepared, on 104 surface of electron transfer layer obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 35% slurry；Blade coating speed is 20mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 400nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 10mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It anneals 15 minutes after coating through 80 DEG C in nitrogen.
Finally obtain the second electrode 110 that thickness is about 70nm.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 20mm/s；Coating temperature is 60 DEG C；Scraper and substrate spacing are 50 μm；After coating
It anneals 15 minutes through 90 DEG C in nitrogen.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, which is prepared, on 108 surface of hole transmission layer obtains the area p multilayered structure: material
Material is CH3NH3PbI3, solvent DMF, be made into mass fraction be 35% slurry；Blade coating speed is 20mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 107 with a thickness of 400nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.01MPa anneal 20 minutes for 135 DEG C in vacuum, and it is practical new to obtain this
A kind of perovskite solar battery structure of type.
Embodiment 4
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 100mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；Coating
Afterwards in nitrogen, 150 DEG C of annealing dryings.The final thickness that obtains is about 10nm.
3) the first perovskite activity precursor layer 105, which is prepared, on 104 surface of electron transfer layer obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 35% slurry；Blade coating speed is 20mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 400nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 20mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It anneals 15 minutes after coating through 100 DEG C in nitrogen.
Finally obtain the second electrode 110 that thickness is about 40nm.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 20mm/s；Coating temperature is 60 DEG C；Scraper and substrate spacing are 50 μm；After coating
It anneals 15 minutes through 90 DEG C in nitrogen.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, which is prepared, on 108 surface of hole transmission layer obtains the area p multilayered structure: material
Material is CH3NH3PbI3, solvent DMF, be made into mass fraction be 35% slurry；Blade coating speed is 20mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 107 with a thickness of 400nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.1MPa anneal 20 minutes for 135 DEG C in vacuum, obtain the utility model
A kind of perovskite solar battery structure.
Embodiment 5
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) electron transfer layer 104: material SnO, is prepared in transparent electrode substrate 1022Nano sol, colloidal sol quality are
The aqueous solution of 20g/L；Blade coating speed is 100mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 100 μm；Coating
Afterwards in nitrogen, 150 DEG C of annealing dryings.The final thickness that obtains is about 10nm.
3) the first perovskite activity precursor layer 105, which is prepared, on 104 surface of electron transfer layer obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 300nm.
4), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 20mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It anneals 15 minutes after coating through 100 DEG C in nitrogen.
Finally obtain the second electrode 110 that thickness is about 40nm.
5) hole transmission layer 108, is prepared in second electrode 110: the slurry used is commercialization PEDOT:PSS (AI
4083) aqueous solution (NiO, Spiro etc. also can be used), using isopropanol according to (PEDOT:PSS): isopropanol=1:3 body
For product than proportion dilution, blade coating speed is 20mm/s；Coating temperature is 60 DEG C；Scraper and substrate spacing are 50 μm；After coating
It anneals 15 minutes through 90 DEG C in nitrogen.Finally obtained hole transmission layer 108 with a thickness of 100nm.
6) the second perovskite activity precursor layer 107, which is prepared, on 108 surface of hole transmission layer obtains the area p multilayered structure: material
Material is CH3NH3PbI3, solvent DMF, be made into mass fraction be 35% slurry；Blade coating speed is 20mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 107 with a thickness of 400nm.
7), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-3 and 4-6 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.01MPa anneal 20 minutes for 135 DEG C in vacuum, and it is practical new to obtain this
A kind of perovskite solar battery structure of type.
Embodiment 6
A kind of preparation method of perovskite solar battery structure of the utility model includes:
1), the preparation of transparent electrode substrate 102: the ito transparent electrode being deposited in transparent ultra-clear glasses is used to be
Prescribed electrode substrate 102, area are 5 × 5cm2, such product has the commercial prod of scale volume production that can directly use.It uses
Before, electrode surface should be successively ultrasonically treated using deionized water, acetone, isopropanol respectively, then use ultraviolet rays cleaning machine
Cleaning, nitrogen stream drying are spare.
2) the first perovskite activity precursor layer 105, is prepared in transparent electrode substrate 102 obtains the area n multilayered structure: material
Material is CH3NH3PbCl3, solvent DMF, be made into mass fraction be 20% slurry；Blade coating speed is 15mm/s；Coating temperature
Degree is room temperature；Scraper and substrate spacing are 50 μm；It anneals 10 minutes after coating through 135 DEG C in nitrogen.Finally obtained perovskite
Active precursor layer 105 with a thickness of 300nm.
3), the preparation of second electrode 110: in baseplate material ultra-clear glasses, nano-silver thread is printed, material is commercialization silver
Nano wire colloidal sol, solvent are isopropanol, concentration 50g/L, silver nanowires diameter about 100nm, 50-100 μm of length.Blade coating speed
Degree is 10mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It anneals 15 minutes after coating through 80 DEG C in nitrogen.
Finally obtain the second electrode 110 that thickness is about 70nm.
4) the second perovskite activity precursor layer 107, which is prepared, on 110 surface of second electrode obtains the area p multilayered structure: structure
For (RNH3)AXnY3-n(R=alkyl；A=Pb, Sn；X, Y=Cl, Br, I；N is the real number of 0-3), solvent DMF is made into quality
The slurry that score is 20%；Blade coating speed is 15mm/s；Coating temperature is room temperature；Scraper and substrate spacing are 50 μm；It applies
It anneals 10 minutes after cloth through 135 DEG C in nitrogen.Finally obtained perovskite activity precursor layer 107 with a thickness of 300nm.
5), the area the p multilayered structure of the area the n multilayered structure for preparing step 1-2 and 3-4 preparation carries out under vacuum conditions
Physics pressing, vacuum degree≤1 × 10-5Pa, composite pressure 0.01MPa anneal 20 minutes for 135 DEG C in vacuum, and it is practical new to obtain this
A kind of perovskite solar battery structure of type.
In the embodiment, relative to embodiment 1, electron transfer layer 104 and hole transmission layer 108, Ke Yijian are not prepared
Chemical industry skill reduces cost, but obtained solar battery efficiency is slightly worse with respect to embodiment.
Comparative example 1
Compared with Example 1, comparative example 1 preparation process's the difference is that: according to embodiment 1 step 1-3 prepare, then
In 105 (CH of the first perovskite activity precursor layer3NH3PbCl3) the second perovskite activity precursor layer 107 is prepared immediately above
(CH3NH3PbI3), then carry out the preparation of electron transfer layer, silver nanowires electrode；Due to preparing the second perovskite activity presoma
107 (CH of layer3NH3PbI3) when solvent erosion, be hardly formed the good CH of pattern3NH3PbI3Film；Corresponding electron-transport simultaneously
The preparation of layer leads to device destruction, final battery is inefficent also due to there is the presence of water.
The utility model energy band schematic diagram such as Fig. 3 before thermal diffusion.After the diffusion, be enriched on the left of calcium titanium ore bed for Cl phase,
Right side is that I phase is enriched with, and the bending of fermi level occurs in intermediate layer, and under this gradient, electronics is easier to move to the left, right
The hole answered is moved to the right, increases the collection separation and collection efficiency of exciton.Final comparing result is as shown in figure 4, this reality
With a kind of novel perovskite solar battery structure relative to existing simple layer perovskite solar battery structure, pressure, electric current are opened
Density and efficiency obtain General Promotion；Specifically: open that pressure is promoted to 1.11V, current density is promoted to 23.1mA/cm2, efficiency
It is promoted to 19.2%.
Claims (5)
1. a kind of perovskite solar battery structure, which is characterized in that including spaced first electrode and second electrode；The
At least two layers compound perovskite activity precursor layer, at least two layers compound calcium are equipped between one electrode and second electrode
Titanium ore activity precursor layer includes compound the first perovskite activity precursor layer and the second perovskite activity precursor layer, and first
Gradient distribution layer is formed between perovskite activity precursor layer and the second perovskite activity precursor layer.
2. a kind of perovskite solar battery structure according to claim 1, which is characterized in that gradient distribution is along the first electricity
The direction of best second electrode forms the gradient distribution of perovskite activity presoma, and then the orientation gradual change for constituting fermi level is curved
It is bent.
3. a kind of perovskite solar battery structure according to claim 1, which is characterized in that first electrode is that ITO is saturating
Prescribed electrode, second electrode are nano-silver thread electrode.
4. a kind of perovskite solar battery structure according to claim 1, which is characterized in that first electrode and the first calcium
Electron transfer layer is equipped between titanium ore activity precursor layer.
5. a kind of perovskite solar battery structure according to claim 1, which is characterized in that second electrode and the second calcium
Hole transmission layer is equipped between titanium ore activity precursor layer.
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| CN109273611A (en) * | 2018-11-28 | 2019-01-25 | 中国华能集团有限公司 | A kind of perovskite solar battery structure and preparation method thereof |
| CN111029466A (en) * | 2019-11-22 | 2020-04-17 | 电子科技大学 | Perovskite solar cell without carrier transport layer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109273611A (en) * | 2018-11-28 | 2019-01-25 | 中国华能集团有限公司 | A kind of perovskite solar battery structure and preparation method thereof |
| CN111029466A (en) * | 2019-11-22 | 2020-04-17 | 电子科技大学 | Perovskite solar cell without carrier transport layer and preparation method thereof |
| CN111029466B (en) * | 2019-11-22 | 2021-07-06 | 电子科技大学 | Perovskite solar cell without carrier transport layer and preparation method thereof |
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