CN104576932A - Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof - Google Patents

Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof Download PDF

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CN104576932A
CN104576932A CN201510025995.1A CN201510025995A CN104576932A CN 104576932 A CN104576932 A CN 104576932A CN 201510025995 A CN201510025995 A CN 201510025995A CN 104576932 A CN104576932 A CN 104576932A
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perovskite
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方国家
刘琴
柯维俊
秦敏超
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Wuhan University WHU
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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Abstract

The invention relates to a perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer and preparation method thereof. The cell comprises a conducting substrate, an electron-transporting layer with double-layer structure, a perovskite light absorption layer, a hole-transporting layer and metal electrodes. The perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer has the advantages that the SnO2 with one step method low-temperature growth, is used as the electron-transporting layer in the photovoltaic cell, replaces the TiO2 electron-transporting layer with two steps method high temperature sintering, and the preparation process is simplified. The mesoporous perovskite photovoltaic cell prepared with one step low-temperature growth method obtains 13.82% of highlight electricity transfer efficiency, and reduces the manufacturing cost effectively at the same time. Compared with a planer construction, the mesoporous structure used in the perovskite photovoltaic cell is liable for the adherence of the perovskite light absorption material. SnO2 conducts a smaller dissimilation on the perovskite light absorption layer than the TiO2 does, the performance and stability of the cell are improved in this way. The perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer and preparation method thereof plays a great promoting role in the development and popularization on the flexible solar cell, and further promotes the industrialized application on the perovskite solar cell.

Description

A kind of tin oxide electron transfer layer is situated between and sees perovskite photovoltaic cell and preparation method thereof
Technical field
The present invention relates to a kind of SnO 2electron transfer layer is situated between and sees perovskite photovoltaic cell and preparation method thereof, belongs to photoelectron material and devices field.
Background technology
In recent years, energy crisis becomes more and more urgent, and the research of clean energy resource becomes more and more urgent.Clean energy resource comprises solar energy, wind energy, water power energy etc.Solar energy is due to inexhaustible, and solar energy can be converted into electric energy by photovoltaic cell has great application prospect.Current solar cell develops into organic solar batteries comparatively ripe now, DSSC and copper indium by silicon solar cell and transfers tin solar cell etc.But also there is a lot of problems such as cost is high, poor stability in application aspect in these batteries at present, so the development and utilization of solar energy is also in the starting stage, about the research of solar cell is also very urgent, drop into a lot of research energy both at home and abroad, all wished obtain huge breakthrough in area of solar cell.
The perovskite battery development in recent years of latest find is rapid, owing to having very high electricity conversion, causes unprecedentedly huge research boom at home and abroad, and has achieved a lot of achievements in research.Perovskite light absorbent has high carrier mobility, band gap is adjustable, prepared by solwution method and high absorption coefficient, so perovskite battery can obtain high short circuit battery, open circuit voltage and fill factor, curve factor.The perovskite battery efficiency that current bibliographical information is the highest is the research in the interface engineering of perovskite photovoltaic cell be published in by people such as external Yang Yang on international top Science magazine, achieve surprising efficiency (the Huanping Zhou of 19.3%, Qi Chen, Gang Li, Song Luo, Tze-bing Song, Hsin-Sheng Duan, Ziruo Hong, Jingbi You, Yongsheng Liu, Yang Yang. Interface engineering of highly efficient perovskite solar cells. science 2014, 345, 6196.).The domestic perovskite solar cell being reported a kind of meso-hole structure without hole transmission layer based on carbon electrode by people such as Han Hongwei on the other hand, achieve the authentication efficiency of 12.8% and the high stability more than the obvious decay of performance (efficiency of 10%) nothing in 1000 hours, all print industrial preparation process has very large application prospect, related work achieves tremendous influence power (Anyi Mei in the world, Xiong Li, Linfeng Liu, Zhiliang Ku, Tongfa Liu, Yaoguang Rong, Mi Xu, Min Hu, Jiangzhao Chen, Ying Yang, Michael Gr tzel, Hongwei Han. A hole-conductor – free, fully printable mesoscopic perovskite solar cell with high stability. science 2014,345,6194.).
The electron transfer layer of perovskite photovoltaic cell can be divided into organic and inorganic two large classes, and most of inorganic electronic transport layer needs high temperature sintering, and organic electron transport layer is stable not, unfriendly and expensive to environment.The electricity conversion of perovskite solar cell has reached industrialized requirement now, but in preparation technology, cost and stability, also have a lot of problem to need to solve.Therefore in order to the industrial applications of perovskite solar cell, if can find a kind of without the need to high temperature sintering, stable chemical nature, environmentally friendly, low-cost electron transfer layer, to the development of battery, especially the development of flexible battery has great importance.
Summary of the invention
The present invention is directed to the electron transfer layer complicated process of preparation of traditional perovskite photovoltaic cell, cost high problem, the tin oxide electron transfer layer providing a kind of low-temperature epitaxy is situated between and sees perovskite photovoltaic cell and preparation method thereof.
Double-layer nanostructured SnO of the present invention 2electron transfer layer is situated between and sees perovskite photovoltaic cell, comprises transparent conductive substrate, electron transfer layer, perovskite light-absorption layer, hole transmission layer and metal electrode; Described electron transfer layer bottom is double-layer nanostructured mesoporous SnO 2layer, by the SnO being covered in transparent conductive substrate 2nano rod compacted zone and be covered in SnO 2snO on nano rod compacted zone 2nano rod or nanometer sheet porous layer composition.
SnO 2nano-structure mesoporous layer, due to meso-hole structure loose between nano rod or nanometer sheet, is conducive to the attachment of perovskite light absorbent and the transmission of electronics.
Described transparent conductive substrate is ITO or FTO transparent conducting glass substrate or flexible and transparent conductive substrate.
Described calcium titanium ore bed light-absorption layer is CH 3nH 3pbI 3-xcl xor CH 3nH 3pbI 3.
Above-mentioned perovskite solar cell, described hole transmission layer is 2,2' of 68 mM, 7,7'-tetra-[N, N-bis-(4-methoxyphenyl) is amino]-9,9'-spiral shell two fluorenes, the mixed solution of the sub-acid amides lithium of bis trifluoromethyl sulfonic acid of 26 mM and the 4-tert .-butylpyridine of 55 mM.Solvent for use is volume ratio is the chlorobenzene of 10:1 and the mixture of acetonitrile.
Described metal electrode is gold electrode.
On give an account of the preparation method seeing perovskite photovoltaic cell, it is characterized in that, comprise the steps:
(1) adopt semiconductor technology to clean transparent conductive substrate, dry up with nitrogen;
(2) the nano-structure mesoporous SnO of Growing Double-Layer 2electron transfer layer;
(3) perovskite CH is prepared 3nH 3pbI 3-xcl xor CH 3nH 3pbI 3light-absorption layer covers in Oxide Electron transport layer;
(4) the hole transmission layer solution prepared in advance is formed one deck hole transmission layer by spin-coating method;
(5) Evaporation preparation Au electrode.
Described double-layer nanostructured mesoporous SnO 2the preparation method of electron transfer layer, comprises the steps:
(1) add in wide-mouth bottle by 0.0125mol/L to 0.05 mol/L tin oxalate, 0.0125mol/L to 0.05 mol/L six methine four ammonia with the ratio of 1:1, solvent is deionized water, stirs 30min;
(2) transparent conductive substrate is put into step (1) ready solution;
(3) solution is put into 75 ~ 95 DEG C of insulating boxs to keep taking out after 3 ~ 48 hours, rear deionized water is by SnO 2the sediment on film surface washes down and dries up with nitrogen.
Perovskite CH 3nH 3pbI 3-xcl xthe preparation method of light-absorption layer, comprises the steps:
(1) configuration of perovskite solution: by the CH synthesized in advance 3nH 3i and PbCl 23:1 is dissolved in dimethyl formamide in molar ratio, stirs 24 hours under 60 degrees Celsius;
(2) the uniform spin coating of precursor solution will be prepared on the electron transport layer with photoresist spinner;
(3) the perovskite light-absorption layer got rid of is annealed 45 minutes under 100 degrees Celsius;
Perovskite CH 3nH 3pbI 3the preparation method of light-absorption layer, comprises the steps:
(1) configuration of perovskite solution: by the PbI of 1 mol/L 2be dissolved in dimethyl formamide, stir 24 hours under 60 degrees Celsius;
(2) by PbI 2solution to be spin-coated on annealed electron transfer layer 70 degrees Celsius of annealing again 30 minutes uniformly by photoresist spinner;
(3) having got rid of PbI 2sample be placed on the CH of 10 mg/L 3nH 3soak five minutes in I aqueous isopropanol;
(4) again sample isopropyl alcohol, dry up with nitrogen, anneal 30 minutes for 70 degrees Celsius.
The present invention can by one-step method low temperature, growth in situ and without the need to annealing method prepare based on double-deck SnO 2the high efficiency perovskite battery of nanostructure electron transfer layer, greatly reduce cost, device has fine electricity conversion and stability, is conducive to application and the popularization of technology.
The present invention adopts the method for low temperature one step growth in situ, has prepared a kind of tin oxide (SnO 2) the inorganic electronic transport layer of nano rod or sheet, be applied to perovskite battery, the stability not only increasing battery and the efficiency achieved up to 13.82%, wherein flexible perovskite battery efficiency can reach 8.78%, exceed current unique one section of open report (Kumar, M. H. et al., Chem. Commun. 2013,49,11089) the efficiency 2.62% of flexible inorganic electron transfer layer perovskite battery, and the preparation method of electron transfer layer of the present invention preparation is relatively simple, SnO simultaneously 2relative to TiO 2there is larger band gap width, there is more stable chemical property, be conducive to the performance and the photostability that improve battery.Significantly reduce cost of manufacture simultaneously.The meso-hole structure that this Jie sees perovskite photovoltaic cell compares the attachment that planar structure is easier to perovskite light absorbent, is conducive to the stability improving battery.
The invention has the beneficial effects as follows: the electron transfer layer of seeing perovskite photovoltaic cell of 1) being situated between is a kind of step low temperature (< 100 DEG C) growth in situ and without the need to the double-layer nanostructured SnO of annealing 2film, instead of the TiO of two traditional step high temperature sinterings 2film, this very significantly reduces the cost of manufacture of perovskite solar energy, simplifies battery preparation technique; 2) this based on double-layer nanostructured SnO 2film achieves comparatively high fill factor and electricity conversion as the perovskite solar cell of electron transfer layer, has very large application development potentiality; 3) SnO 2this oxide acid and alkali-resistance, relative to ZnO, TiO 2to stablize many Deng oxide, so significant in raising device performance stability; 4) preparation technology of this perovskite battery is simple, equipment requirement is low, can principal characteristic high, be more suitable for industrial production than methods such as spin coatings, the large areaization being conducive in the future perovskite solar cell is produced, and has larger prospects for commercial application.
Accompanying drawing explanation
Fig. 1 (left side) is the device architecture schematic diagram of perovskite solar cell, wherein 1-transparent conductive substrate, the double-layer nanostructured mesoporous SnO of 2 – 2layer, 3 – perovskite light-absorption layers, 4-hole transmission layer, 5-metal electrode;
(right side) FTO substrate is at 95 DEG C, tin oxalate: six methine four ammonia are in the aqueous solution of 0.025:0.025Mol/L, the hydrothermal growth SnO of 2 hours 2the ESEM cross-section photograph of the fine and close electron transfer layer of nano rod.
Fig. 2 (left side) is the current density voltage curve figure that embodiment 1 obtains perovskite solar cell; (right side) FTO Conducting Glass stereoscan photograph.
Fig. 3 (left side) is the current density voltage curve figure that embodiment 2 obtains perovskite solar cell; SnO in (right side) embodiment 2 2the stereoscan photograph of the fine and close electron transfer layer of nano rod.
Fig. 4 (left side) is the current density voltage curve figure that embodiment 3 obtains perovskite solar cell; SnO in (right side) embodiment 3 2the stereoscan photograph of the mesoporous electron transfer layer of nano rod.
Fig. 5 (left side) is the current density voltage curve figure that embodiment 4 obtains perovskite solar cell; SnO in (right side) embodiment 4 2the stereoscan photograph of the mesoporous electron transfer layer of nano rod.
Fig. 6 (left side) is the current density voltage curve figure that embodiment 5 obtains perovskite solar cell; SnO in (right side) embodiment 5 2the stereoscan photograph of the mesoporous electron transfer layer of nano rod.
Fig. 7 is the current density voltage curve figure that embodiment 6 obtains perovskite solar cell; SnO in (right side) embodiment 6 2the stereoscan photograph of the mesoporous electron transfer layer of nano rod.
Fig. 8 is the current density voltage curve figure that embodiment 7 obtains perovskite solar cell.
Fig. 9 is the current density voltage curve figure that embodiment 8 obtains perovskite solar cell.
Embodiment
Embodiment 1:
1) clean.To first FTO Conducting Glass be cleaned, be dried up in test.FTO electro-conductive glass cleaning agent suitable for size is first cleaned up, then uses deionized water rinsing.Then successively with deionized water, acetone, EtOH Sonicate cleaning, finally dry up for subsequent use again with nitrogen.
2) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.The configuration of perovskite solution: by the PbCl of 1M 2be dissolved in dimethyl formamide, stir 24 hours under 60 degrees Celsius.Again with sol evenning machine by PbCl 2solution is spin-coated in FTO Conducting Glass, then 70 degrees Celsius are annealed 30 minutes.Spin coating there is PbCl 2sample be placed on the CH of 10 mg/L 3nH 3soak 10 minutes in I aqueous isopropanol; Finally use isopropyl alcohol sample, dry up with nitrogen, anneal 30 minutes for 70 degrees Celsius.
3) hole transmission layer preparation.With sol evenning machine at perovskite CH 3nH 3pbI 3spin coating one deck hole transmission layer solution (2,2', 7 of 68 mM on light-absorption layer, 7'-tetra-[N, N-bis-(4-methoxyphenyl) is amino]-9,9'-spiral shell two fluorenes, the mixed solution of the sub-acid amides lithium of bis trifluoromethyl sulfonic acid of 26 mM and the 4-tert .-butylpyridine of 55 mM.Solvent for use is volume ratio is the chlorobenzene of 10:1 and the mixture of acetonitrile).
4) electrode preparation.The sample of good for spin coating hole transmission layer is placed in vacuum evaporation apparatus and evaporates one deck gold film electrode by thermal evaporation process.
5) test.At AM1.5, active layer effective area is 0.09 cm 2condition under battery is tested.Its J-V curve as shown in Figure 2.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 0.98 V, short-circuit current density 12.37 mA/cm 2, fill factor, curve factor 39.89%, conversion efficiency 4.64%.
Embodiment 2:
1) conductive substrates cleaning.With embodiment 1.
2) electron transfer layer preparation.The configuration of hydrothermal solution: add in wide-mouth bottle by 0.025Mol/L tin oxalate, 0.025Mol/L six methine four ammonia, solvent is deionized water, stirs 30min; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 95 DEG C of insulating boxs to keep 3 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down, and dries up with nitrogen, obtains SnO 2nano rod compacted zone, as described in Fig. 3 (right side).
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 1.02V, short-circuit current density 10.24mA/cm 2, fill factor, curve factor 66.71%, conversion efficiency 6.97%.
Embodiment 3:
1) conductive substrates cleaning.With embodiment 1.
2) the mesoporous SnO of double-layer nanometer bar 2prepared by electron transfer layer.The configuration of hydrothermal solution: with embodiment 2; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 75 DEG C of insulating boxs to keep 6 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down and dries up with nitrogen, obtains SnO 2the mesoporous layer of nano rod, as described in Fig. 4 (right side).
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 1.06V, short-circuit current density 10.85mA/cm 2, fill factor, curve factor 58.02%, conversion efficiency 6.67%.
Embodiment 4:
1) conductive substrates cleaning.With embodiment 1.
2) the mesoporous SnO of double-layer nanometer bar 2prepared by electron transfer layer.The configuration of hydrothermal solution: add in wide-mouth bottle by 0.0125Mol/L tin oxalate, 0.0125Mol/L six methine four ammonia, solvent is deionized water, stirs 30min; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 95 DEG C of insulating boxs to keep 9 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down and dries up with nitrogen, obtains SnO 2the mesoporous layer of nano rod, as described in Fig. 5 (right side).
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 1.03 V, short-circuit current density 19.32mA/cm 2, fill factor, curve factor 67.44%, conversion efficiency 13.42%.
Embodiment 5:
1) conductive substrates cleaning.With embodiment 1.
2) the mesoporous SnO of double-layer nanometer bar 2prepared by electron transfer layer.The configuration of hydrothermal solution: with embodiment 2; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 95 DEG C of insulating boxs to keep 48 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down and dries up with nitrogen, obtains SnO 2the mesoporous layer of nano rod, as described in Fig. 6 (right side).
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 1.02 V, short-circuit current density 19.61mA/cm 2, fill factor, curve factor 69.09%, conversion efficiency 13.82%; Sample is placed on humidity lower than after in the drying cupboard of 25% 1800 hours, records open circuit voltage 1.02V, short-circuit current density 17.31 mA/cm 2, fill factor, curve factor 67.41%, conversion efficiency 11.90%, efficiency decay is less than 14%.
Embodiment 6:
1) conductive substrates cleaning.To first ITO Conducting Glass be cleaned, be dried up in test.Size is suitable
ITO electro-conductive glass cleaning agent first cleans up, then uses deionized water rinsing.Then successively with deionized water, acetone, EtOH Sonicate cleaning, finally dry up for subsequent use again with nitrogen.
2) double-layer nanostructured mesoporous SnO 2prepared by electron transfer layer.The configuration of hydrothermal solution: add in wide-mouth bottle by 0.025Mol/L tin oxalate, 0.025Mol/L six methine four ammonia, solvent is deionized water, stirs 30min; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 95 DEG C of insulating boxs to keep 6 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down and dries up with nitrogen; , obtain SnO 2the mesoporous layer of nanometer sheet, as described in Fig. 7 (right side).
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 0.98V, short-circuit current density 14.64 mA/cm 2, fill factor, curve factor 51.61%, conversion efficiency 7.41%.
Embodiment 7:
1) conductive substrates cleaning.With embodiment 1.
2) the mesoporous SnO of double-layer nanometer bar 2prepared by electron transfer layer.The configuration of hydrothermal solution: add in wide-mouth bottle by 0.05Mol/L tin oxalate, 0.05Mol/L six methine four ammonia, solvent is deionized water, stirs 30min; Cleaned transparent conductive substrate is put into the ready solution of step; Solution is put into 95 DEG C of insulating boxs to keep 9 hours, take out naturally cool to room temperature in insulating box after, with deionized water by SnO 2the sediment on film surface washes down, and dries up with nitrogen;
3) perovskite CH 3nH 3pbI 3-xcl xprepared by light-absorption layer.By the CH synthesized in advance 3nH 3i and PbCl 23:1 is dissolved in dimethyl formamide in molar ratio, stirs 24 hours under 60 degrees Celsius; The uniform spin coating of precursor solution will be prepared on the electron transport layer with photoresist spinner; The perovskite light-absorption layer got rid of is annealed 45 minutes under 100 degrees Celsius.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 0.83V, short-circuit current density 18.66mA/cm 2, fill factor, curve factor 53.13%, conversion efficiency 8.23%.
Embodiment 8:
1) conductive substrates cleaning.First transparent flexible conductive substrates is cut into required size, shears rear cleaning agent and first clean up, then use deionized water rinsing.Then place it in ultrasonic cleaner and spend ethanol, deionized water for ultrasonic cleaning successively, finally dry up the substrate that can obtain testing the surface clean needed with nitrogen again.
2) the mesoporous SnO of double-layer nanometer bar , 2prepared by electron transfer layer.With embodiment 3.
3) perovskite CH 3nH 3pbI 3prepared by light-absorption layer.With embodiment 1.
4) hole transmission layer preparation.With embodiment 1.
5) electrode preparation.With embodiment 1.
6) test, with embodiment 1.The photoelectric conversion efficiency parameter obtained is, open circuit voltage 1.03V, short-circuit current density 15.07 mA/cm 2, fill factor, curve factor 56.56%, conversion efficiency 8.78%.
With double-layer nanometer bar structure SnO prepared by in-situ low-temperature in the present invention 2the electron transfer layer doing perovskite photovoltaic cell achieves very high electricity conversion.In this double-decker, compacted zone can blocking hole, reduces the compound of electron hole pair, thus improves fill factor, curve factor; Mesoporous layer can increase the absorption of perovskite, improves short circuit current, from the conversion efficiency improving battery.This kind of method and than based on traditional use 550 celsius temperature sintering TiO 2the perovskite battery efficiency of electron transfer layer is high.This nano rod structure SnO 2electron transfer layer is applied in based on perovskite CH 3nH 3pbI 3and CH 3nH 3pbI 3-xcl xphotovoltaic cell in all achieve good effect.SnO 2the preparation process of nanostructure is simple, raw material environmental protection, and SnO 2material itself has good stability, and the solar cell most importantly prepared has excellent performance, has the potential application of huge production capacity.Jie that this also illustrates based on this novel electron transport layer sees the feasibility that perovskite photovoltaic cell is applied in large area and the suitability for industrialized production such as flexible.

Claims (8)

1. a double-layer nanostructured SnO 2electron transfer layer is situated between and sees perovskite photovoltaic cell, comprises transparent conductive substrate, electron transfer layer, perovskite light-absorption layer, hole transmission layer and metal electrode; Described electron transfer layer bottom is double-layer nanostructured mesoporous SnO 2layer, by the SnO being covered in transparent conductive substrate 2nano rod compacted zone and be covered in SnO 2snO on nano rod compacted zone 2nano rod or nanometer sheet porous layer composition.
2. Jie according to claim 1 sees perovskite photovoltaic cell, and it is characterized in that, described transparent conductive substrate is FTO or ITO transparent conducting glass substrate or flexible and transparent conductive substrate.
3. Jie according to claim 1 sees perovskite photovoltaic cell, and it is characterized in that, described calcium titanium ore bed light-absorption layer is CH 3nH 3pbI 3-xcl xor CH 3nH 3pbI 3.
4. Jie according to claim 1 sees perovskite photovoltaic cell, it is characterized in that, described hole transmission layer is 2 of 68 mM, 2', 7,7'-tetra-[N, N-bis-(4-methoxyphenyl) is amino]-9,9'-spiral shell two fluorenes, the mixed solution of the sub-acid amides lithium of bis trifluoromethyl sulfonic acid of 26 mM and the 4-tert .-butylpyridine of 55 mM, solvent for use is volume ratio is the chlorobenzene of 10:1 and the mixture of acetonitrile.
5. Jie according to claim 1 sees perovskite photovoltaic cell, and it is characterized in that, described metal electrode is gold electrode.
6. according to claim 1 Jie sees the preparation method of perovskite photovoltaic cell, it is characterized in that, comprises the steps:
(1) adopt semiconductor technology to clean transparent conductive substrate, dry up with nitrogen;
(2) the mesoporous SnO of Growing Double-Layer nano rod 2electron transfer layer;
(3) perovskite CH is prepared 3nH 3pbI 3-xcl xor CH 3nH 3pbI 3light-absorption layer covers in Oxide Electron transport layer;
(4) the hole transmission layer solution prepared in advance is formed one deck hole transmission layer by spin-coating method;
(5) Evaporation preparation Au electrode;
Described double-layer nanostructured mesoporous SnO 2the preparation method of layer, comprises the steps:
(1) add in wide-mouth bottle by 0.0125mol/L to 0.05 mol/L tin oxalate, 0.0125mol/L to 0.05 mol/L six methine four ammonia with the ratio of 1:1, solvent is deionized water, stirs 30min;
(2) transparent conductive substrate is put into step (1) ready solution;
(3) solution is put into 75 ~ 95 DEG C of insulating boxs to keep taking out after 3 ~ 48 hours, rear deionized water is by SnO 2the sediment on film surface washes down and dries up with nitrogen.
7. preparation method according to claim 6, is characterized in that, perovskite CH 3nH 3pbI 3-xcl xthe preparation method of light-absorption layer, comprises the steps:
(1) configuration of perovskite solution: by the CH synthesized in advance 3nH 3i and PbCl 23:1 is dissolved in dimethyl formamide in molar ratio, stirs 24 hours under 60 degrees Celsius;
(2) the uniform spin coating of precursor solution will be prepared on the electron transport layer with photoresist spinner;
(3) the perovskite light-absorption layer got rid of is annealed 45 minutes under 100 degrees Celsius.
8. preparation method according to claim 6, is characterized in that, perovskite CH 3nH 3pbI 3the preparation method of light-absorption layer, comprises the steps:
(1) configuration of perovskite solution: by the PbI of 1 mol/L 2be dissolved in dimethyl formamide, stir 24 hours under 60 degrees Celsius;
(2) by PbI 2solution to be spin-coated on annealed electron transfer layer 70 degrees Celsius of annealing again 30 minutes uniformly by photoresist spinner;
(3) having got rid of PbI 2sample be placed on the CH of 10 mg/L 3nH 3soak five minutes in I aqueous isopropanol;
(4) again sample isopropyl alcohol, dry up with nitrogen, anneal 30 minutes for 70 degrees Celsius.
CN201510025995.1A 2015-01-19 2015-01-19 Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof Pending CN104576932A (en)

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CN105576127A (en) * 2015-12-19 2016-05-11 淮北师范大学 Multi-heterojunction interface perovskite solar cell and preparation method thereof
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CN106867305B (en) * 2017-02-27 2017-11-28 华中科技大学 The CeO that a kind of surface is modified2Nano material and product
CN108110141A (en) * 2017-11-28 2018-06-01 南方科技大学 Perovskite solar cell and preparation method thereof
CN108539025A (en) * 2018-04-19 2018-09-14 常州大学 A kind of high orientation two dimension hydridization perovskite thin film and preparation method thereof by substrate regulation and control
CN108539025B (en) * 2018-04-19 2022-03-25 常州大学 Substrate-regulated high-orientation two-dimensional hybrid perovskite thin film and preparation method thereof
CN108493346A (en) * 2018-04-25 2018-09-04 中国工程物理研究院化工材料研究所 Perovskite solar cell and preparation method thereof based on tin oxide nano stick array
CN109888106A (en) * 2019-03-11 2019-06-14 吉林大学 A kind of SnO2The preparation method of electron transfer layer and perovskite solar cell
CN109888106B (en) * 2019-03-11 2020-09-01 吉林大学 SnO (stannic oxide)2Preparation method of electron transport layer and perovskite solar cell
CN110556479A (en) * 2019-09-12 2019-12-10 合肥工业大学 Tin dioxide-based mesoporous perovskite solar cell and preparation method thereof
CN110556479B (en) * 2019-09-12 2022-12-02 合肥工业大学 Tin dioxide-based mesoporous perovskite solar cell and preparation method thereof
CN110817860A (en) * 2019-11-14 2020-02-21 中国科学院青岛生物能源与过程研究所 Stannic oxide/graphite alkyne compound interface layer and preparation and application thereof
CN111029470A (en) * 2019-12-09 2020-04-17 复旦大学 Perovskite solar cell based on nano grass-shaped mesoporous layer and preparation method thereof
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CN115884611A (en) * 2023-02-23 2023-03-31 北京科技大学 CsPbI 3 Perovskite solar cell and preparation method thereof
CN115884611B (en) * 2023-02-23 2023-06-27 北京科技大学 CsPbI 3 Perovskite solar cell and preparation method thereof

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