CN115581076A - Preparation method of perovskite solar cell based on carbon electrode and without hole transport layer - Google Patents
Preparation method of perovskite solar cell based on carbon electrode and without hole transport layer Download PDFInfo
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- CN115581076A CN115581076A CN202211115133.4A CN202211115133A CN115581076A CN 115581076 A CN115581076 A CN 115581076A CN 202211115133 A CN202211115133 A CN 202211115133A CN 115581076 A CN115581076 A CN 115581076A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 230000005525 hole transport Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000000243 solution Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000010409 thin film Substances 0.000 claims abstract description 8
- 239000002243 precursor Substances 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical class CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract 25
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 35
- 239000010408 film Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- JAHFQMBRFYOPNR-UHFFFAOYSA-N iodomethanamine Chemical compound NCI JAHFQMBRFYOPNR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- JCHYZVHKYNYEMJ-UHFFFAOYSA-N C(C)(C)O.ICN Chemical compound C(C)(C)O.ICN JCHYZVHKYNYEMJ-UHFFFAOYSA-N 0.000 claims 2
- 239000004809 Teflon Substances 0.000 claims 1
- 229920006362 Teflon® Polymers 0.000 claims 1
- 230000031700 light absorption Effects 0.000 abstract description 20
- 229910000510 noble metal Inorganic materials 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004224 UV/Vis absorption spectrophotometry Methods 0.000 description 1
- MCEWYIDBDVPMES-UHFFFAOYSA-N [60]pcbm Chemical compound C123C(C4=C5C6=C7C8=C9C%10=C%11C%12=C%13C%14=C%15C%16=C%17C%18=C(C=%19C=%20C%18=C%18C%16=C%13C%13=C%11C9=C9C7=C(C=%20C9=C%13%18)C(C7=%19)=C96)C6=C%11C%17=C%15C%13=C%15C%14=C%12C%12=C%10C%10=C85)=C9C7=C6C2=C%11C%13=C2C%15=C%12C%10=C4C23C1(CCCC(=O)OC)C1=CC=CC=C1 MCEWYIDBDVPMES-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- RQQRAHKHDFPBMC-UHFFFAOYSA-L lead(ii) iodide Chemical compound I[Pb]I RQQRAHKHDFPBMC-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The invention relates to the technical field of solar cells and discloses a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer, which is characterized by forming PbI 2 (DMSO) complexes to achieve a poorly soluble PbI 2 The concentration of the perovskite light absorption material is higher in a DMF and DMSO mixed solution, so that a thicker perovskite light absorption layer is obtained, and the light absorption intensity of the perovskite solar cell is enhanced. The method comprises the following steps: s1; pbI 2 (DMSO) preparation of thin films by reacting PbI 2 The mixed solution of DMF and DMSO was added in portions. The carbon-based electrode is void-freeAccording to the preparation method of the perovskite solar cell with the hole transport layer, the thickness of the light absorption layer is increased by improving the concentration of the perovskite precursor solution, the light absorption intensity of the light absorption layer is improved, the problem that holes appear in the perovskite light absorption layer is avoided, and the expensive noble metal electrode is replaced by the low-price carbon electrode with good conductivity, so that the perovskite solar cell with the hole transport layer-free structure, which is simple in structure and low in cost, is prepared.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer.
Background
Compared with a silicon-based solar cell, the perovskite solar cell has the advantages of low preparation cost and high photoelectric conversion efficiency, and becomes a research hotspot at present.
In the prior art, a two-dimensional/three-dimensional heterostructure perovskite solar cell is prepared by a printing method, and the cell structure is ITO/PC61BM/MAPbI 3 The BCP is an organic hole transport layer material, is easy to decompose at high temperature, the counter electrode material is noble metal Au, and the area of the cell is only 0.09cm 2 Thereby being not beneficial to subsequent large-scale mass production; in the prior art, ionic liquid is used as a part of solvent to prepare a product with a structure of FTO/SnO2/IL/MAPbI 3 The perovskite solar cell with the/C structure does not use a hole transport layer material and replaces a noble metal electrode with a carbon electrode, but the synthesis and purification of the added ionic liquid are extremely difficult, and the preparation cost of the perovskite solar cell is increased; in the prior art, polyethylene glycol is added into a perovskite precursor solution to prepare a perovskite precursor solution with a structure of FTO/TiO2-ZrO 2 /MAPbI 3 The perovskite solar cell has the advantages that the perovskite light absorption layer of the cell is low in thickness, the electron transmission layer is of a mesoporous structure, and charge recombination can occur between the light absorption layer and the FTO due to the fact that the light absorption layer is in direct contact with the FTO.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer, which solves the problems that a noble metal electrode is expensive, a perovskite light absorption layer is small in thickness, the light absorption intensity is low, and the charge recombination is generated due to the fact that an electron transport layer is in direct contact with the hole transport layer or the electrode due to the defects of surface holes and the like.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer comprises the following steps:
S1；PbI 2 (DMSO) preparation of thin films by reacting PbI 2 Adding mixed solution of DMF and DMSO in batches, magnetically stirring to dissolve completely, filtering the complex solution with polytetrafluoroethylene organic filter membrane, and spin-coating the precursor solution on TiO under 3000r/min and 30s conditions 2 On the compact layer, placing in a drying box after spin coating to completely volatilize redundant DMF to obtain PbI 2 (DMSO) thin films;
s2; preparing an MAI isopropanol solution: dissolving 0.4253g MAI powder in 5mL isopropanol, stirring at room temperature to dissolve to obtain 0.535 mol.L -1 A solution of iodomethylamine in isopropanol;
S3；MAPbI 3 preparing a film: mixing 100. Mu.L of the mixture with 0.535mol & L -1 Adding MAI isopropanol solution dropwise into PbI 2 After the (DMSO) film stays for 30s, a spin coater is started to remove the redundant MAI isopropanol solution, and finally the film is heated and converted on a heating plate to generate CH 3 NH 3 PbI 3 Film, naturally cooling to room temperature, and adding 200 μ L isopropanol dropwise to MAPbI 3 The surface was cleaned of excess MAI at 3000r/min for 30s.
S4, performing primary filtration; blade coating of carbon electrode: 0.5mL of conductive carbon paste was drawn down to MAPbI using a drawdown applicator 3 Film surface, cell effective area 1cm 2 And annealing for later use.
Preferably, the volume ratio of DMF to DMSO in step S1 is 4.
Preferably, the pore diameter of the polytetrafluoroethylene organic filter membrane in the step S1 is 0.22 μm, and the time for placing in the drying box is two hours.
Preferably, the step S2 further comprises obtaining 0.535 mol.L -1 The isopropyl alcohol solution of iodomethylamine is filtered by a syringe with a 0.22 mu m polytetrafluoroethylene organic filter membrane for standby.
Preferably, the parameters of the spin coater in the step S3 are 5000r/min, and the time is 30S.
Preferably, the heating plate temperature in the step S3 is 100 ℃, and the time is 30min.
Preferably, the heating plate temperature in the step S4 is 100 ℃, and the time is 10min.
(III) advantageous effects
Compared with the prior art, the invention provides a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer, and the preparation method has the following beneficial effects:
according to the preparation method of the perovskite solar cell based on the carbon electrode and without the hole transport layer, the thickness of the light absorption layer is increased by increasing the concentration of the perovskite precursor solution, the light absorption intensity of the light absorption layer is improved, and meanwhile, the problem that holes appear in the perovskite light absorption layer is avoided. And the perovskite solar cell without the hole transport layer structure is prepared by replacing an expensive noble metal electrode with a carbon electrode with low price and good conductivity.
Drawings
FIG. 1 is a two-step process for the preparation of MAPbI in the present invention 3 A schematic film flow diagram;
FIG. 2 is an XRD pattern of (a) a PbI2 (DMSO) film, (b) an XRD pattern of a MAPbI3 film, and (c) an XRD pattern of a high resolution MAPbI3 film (local) in accordance with the present invention;
FIG. 3 shows (a-d) PbI of the present invention 2 (DMSO) surface topography of thin films and (e-h) MAPbI 3 A surface topography map of the film;
FIG. 4 shows (a) PbI in the present invention 2 UV-VIS absorption Spectroscopy schematic of (DMSO) thin films and (b) MAPbI 3 A schematic diagram of the UV-visible absorption spectrum of the film;
FIG. 5 shows the present inventionMing-Zhong MAPbI 3 Film, (a) full spectrum and (b) fine spectrum;
FIG. 6 is a J-V plot of a large area carbon electrode perovskite solar cell of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
a preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer comprises the following steps:
S1；PbI 2 preparation of (DMSO) films: in an amount of 1.3 mol. L -1 PbI 2 (DMSO) film as an example, 0.9224g (2 mmol) of PbI 2 Adding the powder into 2mL of DMF, magnetically stirring at 70 ℃ until the powder is completely dissolved, then dropwise adding 125 mu L (1.8 mmol) of DMSO into the solution, and stirring for 30min immediately after the dropwise addition; 0.2767g (0.6 mmol) of PbI 2 Dissolved in the above solution, 57. Mu.L (0.8 mmol) of DMSO was added dropwise, and PbI was added in portions 2 And DMSO to obtain 1.3 mol. L -1 PbI 2 (DMSO) in DMF. The solution was filtered through a polytetrafluoroethylene organic filter having a pore size of 0.22. Mu.m. The precursor solution is coated on the TiO in a rotating way under the conditions of 3000r/min and 30s 2 On the dense layer. After spin coating, the mixture is placed in a drying box for two hours to completely volatilize redundant DMF, and PbI is obtained 2 (DMSO) thin films;
s2; preparing an MAI isopropanol solution: dissolving 0.4253g MAI powder in 5mL isopropanol, stirring at room temperature to dissolve to obtain 0.535 mol.L -1 Filtering isopropanol solution of iodomethylamine with polytetrafluoroethylene organic filter membrane with pore diameter of 0.22 μm;
S3；MAPbI 3 preparation of the film: mixing 100 μ L of 0.535mol · L -1 MAI isopropylThe alcoholic solution is dripped into PbI 2 After the (DMSO) film stays for 30s, a spin coater is started to remove the redundant MAI isopropanol solution under the conditions of 5000r/min and 30s, and finally the film is heated on a heating plate at 100 ℃ for 30min to be converted into CH 3 NH 3 PbI 3 A film. Naturally cooling to room temperature, and adding 200 μ L isopropanol dropwise to MAPbI 3 The surface was cleaned of excess MAI at 3000r/min for 30s.
S4, performing primary filtration; blade coating of carbon electrode: 0.5mL of conductive carbon paste was drawn down to MAPbI using a drawdown applicator 3 The effective area of the battery is kept at 1cm on the surface of the film 2 Annealing at 100 deg.C for 10min.
The invention has the beneficial effects that: the invention is achieved by forming PbI 2 (DMSO) complexes to achieve poorly soluble PbI 2 The method has the advantages that the high concentration is obtained in the mixed solution of DMF and DMSO, so that the thicker perovskite light absorption layer is obtained, the light absorption intensity of the light absorption layer is enhanced, the defect of holes in the perovskite light absorption layer is avoided, the electronic transmission layer is seriously contacted with an electrode in a direct mode to carry out charge recombination, and the photoelectric conversion efficiency of the perovskite solar cell is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A preparation method of a perovskite solar cell based on a carbon electrode and without a hole transport layer is characterized by comprising the following steps:
S1；PbI 2 (DMSO) preparation of thin films by reacting PbI 2 Adding mixed solution of DMF and DMSO in batches, magnetically stirring until completely dissolving, and mixing the complexFiltering the solution with polytetrafluoroethylene organic filter membrane, and spin-coating the precursor solution on TiO at 3000r/min for 30s 2 On the compact layer, spin-coating, placing in a drying box to completely volatilize redundant DMF to obtain PbI 2 (DMSO) thin films;
s2; preparing an MAI isopropanol solution: dissolving 0.4253g MAI powder in 5mL isopropanol, stirring at room temperature to dissolve to obtain 0.535 mol.L -1 A solution of iodomethylamine in isopropanol;
S3；MAPbI 3 preparing a film: mixing 100 μ L of 0.535mol · L -1 Iodomethylamine isopropanol solution is dripped into PbI 2 After staying on the (DMSO) film for 30s, starting a spin coater to remove the redundant iodomethylamine isopropanol solution, and finally heating and converting the film on a heating plate to generate CH 3 NH 3 PbI 3 Film, naturally cooling to room temperature, and adding 200 μ L isopropanol dropwise to MAPbI 3 Removing redundant iodomethylamine on the surface under the parameter conditions of 3000r/min and 30 s;
s4, performing primary filtration; blade coating of carbon electrode: 0.5mL of conductive carbon paste was drawn down to MAPbI using a drawdown applicator 3 The surface of the film is kept 1cm 2 And annealing for later use.
2. The method for preparing the carbon electrode-based perovskite solar cell without the hole transport layer according to claim 1, wherein the volume ratio of DMF to DMSO in the step S1 is 4.
3. The method for preparing a perovskite solar cell based on a carbon electrode and without a hole transport layer as claimed in claim 1, wherein the pore diameter of the polytetrafluoroethylene organic filter membrane in the step S1 is 0.22 μm, and the placing time in the drying box is two hours.
4. The method for preparing perovskite solar cell based on carbon electrode and without hole transport layer according to claim 1, wherein the step S2 further comprises obtaining 0.535 mol-L -1 Process for preparing iodomethylamineThe isopropanol solution was filtered through a syringe with a 0.22 μm teflon organic filter membrane and was ready for use.
5. The method for preparing the perovskite solar cell based on the carbon electrode and without the hole transport layer as claimed in claim 1, wherein the parameters of the spin coater in the step S3 are 5000r/min and the time is 30S.
6. The method for preparing the perovskite solar cell based on the carbon electrode and without the hole transport layer as claimed in claim 1, wherein the heating temperature in the step S3 is 100 ℃ and the time is 30min.
7. The method for preparing the perovskite solar cell based on the carbon electrode and without the hole transport layer as claimed in claim 1, wherein the heating temperature in step S4 is 100 ℃ and the time is 10min.
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| CN202211115133.4A CN115581076A (en) | 2022-09-14 | 2022-09-14 | Preparation method of perovskite solar cell based on carbon electrode and without hole transport layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117881257A (en) * | 2024-03-11 | 2024-04-12 | 浙江省白马湖实验室有限公司 | Preparation method of high-efficiency carbon electrode perovskite solar cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117881257A (en) * | 2024-03-11 | 2024-04-12 | 浙江省白马湖实验室有限公司 | Preparation method of high-efficiency carbon electrode perovskite solar cell |
| CN117881257B (en) * | 2024-03-11 | 2024-05-28 | 浙江省白马湖实验室有限公司 | Preparation method of high-efficiency carbon electrode perovskite solar cell |
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