CN117769276A - Full-printed solar cell and preparation method thereof - Google Patents
Full-printed solar cell and preparation method thereof Download PDFInfo
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- CN117769276A CN117769276A CN202311838400.5A CN202311838400A CN117769276A CN 117769276 A CN117769276 A CN 117769276A CN 202311838400 A CN202311838400 A CN 202311838400A CN 117769276 A CN117769276 A CN 117769276A
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- 238000002360 preparation method Methods 0.000 title abstract description 21
- YIKSCQDJHCMVMK-UHFFFAOYSA-N Oxamide Chemical compound NC(=O)C(N)=O YIKSCQDJHCMVMK-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000002161 passivation Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 40
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 238000010345 tape casting Methods 0.000 claims abstract description 27
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 34
- 238000000137 annealing Methods 0.000 claims description 26
- 239000003054 catalyst Substances 0.000 claims description 18
- 239000002243 precursor Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- 238000007790 scraping Methods 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 description 14
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 10
- 230000005525 hole transport Effects 0.000 description 10
- 229910006404 SnO 2 Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002105 nanoparticle Substances 0.000 description 5
- XDXWNHPWWKGTKO-UHFFFAOYSA-N 207739-72-8 Chemical compound C1=CC(OC)=CC=C1N(C=1C=C2C3(C4=CC(=CC=C4C2=CC=1)N(C=1C=CC(OC)=CC=1)C=1C=CC(OC)=CC=1)C1=CC(=CC=C1C1=CC=C(C=C13)N(C=1C=CC(OC)=CC=1)C=1C=CC(OC)=CC=1)N(C=1C=CC(OC)=CC=1)C=1C=CC(OC)=CC=1)C1=CC=C(OC)C=C1 XDXWNHPWWKGTKO-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical group COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- JKSIBASBWOCEBD-UHFFFAOYSA-N N,N-bis(4-methoxyphenyl)-9,9'-spirobi[fluorene]-1-amine Chemical compound COc1ccc(cc1)N(c1ccc(OC)cc1)c1cccc2-c3ccccc3C3(c4ccccc4-c4ccccc34)c12 JKSIBASBWOCEBD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a full-printed solar cell and a preparation method thereof, wherein the full-printed solar cell comprises: a conductive substrate; an electron transport layer overlying the conductive substrate; a perovskite layer superimposed on the electron transport layer; an oxamide passivation layer overlying the perovskite layer; an electrode layer overlying the oxamide passivation layer; the electron transport layer, the perovskite layer, the oxamide passivation layer and the electrode layer are all prepared through a knife coating process. The invention provides a solar cell with good performance, which is prepared at low cost.
Description
Technical Field
The invention belongs to the field of solar cells, and particularly relates to a full-printed solar cell and a preparation method thereof.
Background
Photoelectric conversion efficiency of solar cells has broken through from 3.8% to 26.1% over the last decade, showing great commercialization potential. The basic structure of the solar cell is shown in fig. 1, and the solar cell comprises, from bottom to top: a conductive substrate, an electron transport layer, a perovskite layer, a hole transport layer, and an electrode layer. Wherein, the hole transport layer is generally prepared from a Spiro-OMeTAD (2, 2', 7' -tetra [ N, N-di (4-methoxyphenyl) amino ] -9,9' -spirobifluorene) material. However, the Spiro-ome tad material is expensive, resulting in high cost of the solar cell.
Therefore, how to produce a solar cell with good performance at low cost is a technical problem to be solved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an all-printed solar cell and a preparation method thereof.
The technical problems to be solved by the invention are realized by the following technical scheme:
an all-printed solar cell comprising:
a conductive substrate;
an electron transport layer overlying the conductive substrate;
a perovskite layer superimposed on the electron transport layer;
an oxamide passivation layer overlying the perovskite layer;
an electrode layer overlying the oxamide passivation layer;
the electron transport layer, the perovskite layer, the oxamide passivation layer and the electrode layer are all prepared through a knife coating process.
In one embodiment, the perovskite layer is obtained by firstly modifying the electron transport layer with the catalyst, then scraping perovskite precursor liquid on the catalyst modified layer, and performing annealing treatment.
In one embodiment, the electron transport layer includes: snO (SnO) 2 An electron transport layer.
In one embodiment, the electrode layer includes: and a carbon electrode layer.
In one embodiment, the conductive substrate comprises: an ITO conductive substrate.
The invention also provides a preparation method of the full-printed solar cell, which comprises the following steps:
preparing an electron transport layer on a conductive substrate by using a knife coating process;
preparing a perovskite layer on the electron transport layer by using a knife coating process;
preparing an oxamide passivation layer on the perovskite layer by using a knife coating process;
and preparing an electrode layer on the oxamide passivation layer by using a knife coating process.
In one embodiment, the preparation of the oxamide passivation layer on the perovskite layer using a knife coating process includes:
preparing an ether solution of oxamide; wherein, the concentration of the oxamide is 0.05-10 mg/mL;
spreading an ether solution of oxamide on the perovskite layer;
and performing annealing treatment to form an oxamide passivation layer on the perovskite layer.
In one embodiment, the annealing temperature of the annealing treatment is 65 ℃ and the annealing time period is 10 minutes.
In one embodiment, the doctor blade is applied to the perovskite layer at a doctor blade speed of 10mm/s with a gap of 150 μm from the perovskite layer.
In one embodiment, a perovskite layer is prepared on the electron transport layer using a doctor blade process comprising:
scraping and coating the catalyst Ni on the electron transport layer to form a catalyst Ni modification layer;
scraping perovskite precursor liquid on the catalyst modified layer;
and performing annealing treatment to form a perovskite layer on the electron transport layer.
The full-printed solar cell provided by the invention comprises: the device comprises a conductive substrate, an electron transport layer, a perovskite layer and an oxamide passivation layer; the perovskite layer is passivated by the oxamide passivation layer, an expensive Spiro-OMeTAD hole transport layer is not required to be prepared, and the cost of the perovskite solar cell is greatly reduced. The oxamide can be dissolved in diethyl ether which is a benign solvent, does not destroy perovskite, and can be coated by a doctor blade process. The carbonyl group in the oxamide is capable of under-coordinating with the perovskite surface metal ion (Pb 2+ ) And a Lewis acid-base pair is formed, so that the defect state density of the perovskite surface is obviously reduced, the perovskite surface defects are passivated, and the efficiency and the stability of the battery are improved. The introduction of the oxamide can also form a proper energy level gradient between the perovskite and the electrode layer, so that the separation and transmission of carriers on the interface of the perovskite layer and the electrode layer are effectively improved, the short-circuit current and the open-circuit voltage of the solar cell are improved, and the efficiency of the solar cell is improved. Therefore, the invention uses the oxamide passivation layer to replace the traditional hole transport layer, so that the solar cell can have better photoelectric performance even without the hole transport layer.
In addition, in the full-printed solar cell provided by the invention, the electron transmission layer, the perovskite layer, the oxamide passivation layer and the electrode layer can be prepared by a knife coating process, the preparation process is simple, the commercial application of perovskite is facilitated, and the full-printed solar cell has wide market demands and application prospects.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a structure of a conventional solar cell;
fig. 2 is a schematic structural diagram of an all-printed solar cell according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for manufacturing an all-printed solar cell according to an embodiment of the present invention;
FIG. 4 (a) is a schematic illustration of the method of FIG. 3 for preparing an electron transport layer on a conductive substrate;
FIG. 4 (b) is a schematic illustration of the preparation of a perovskite layer on an electron transport layer in the process shown in FIG. 3;
FIG. 4 (c) is a schematic illustration of the preparation of an oxamide passivation layer on a perovskite layer in the process shown in FIG. 3;
FIG. 4 (d) is a schematic illustration of the preparation of an electrode layer on an oxamide passivation layer in the method of FIG. 3;
FIG. 5 is a J-V curve of the solar cell of experiment 1 in the specification, i.e., current density versus voltage characteristic curve;
FIG. 6 is a J-V curve of the solar cell of experiment 2 in the specification;
fig. 7 is a J-V curve of the solar cell of experiment 3 in the specification.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but embodiments of the present invention are not limited thereto.
In order to produce a solar cell with good performance at low cost, an embodiment of the present invention provides an all-printed solar cell, as shown in fig. 2, including:
a conductive substrate; such as an ITO (indium tin oxide) conductive substrate.
An electron transport layer overlying the conductive substrate; such as SnO 2 An electron transport layer.
A perovskite layer superimposed on the electron transport layer;
an oxamide passivation layer overlying the perovskite layer;
an electrode layer superimposed on the oxamide passivation layer; such as a carbon electrode layer.
Wherein the electron transport layer, the perovskite layer, the oxamide passivation layer and the electrode layer are all prepared by a knife coating process. In a preferred implementation, the perovskite layer may be obtained by modifying an electron transport layer with a catalyst of catNi (nickel catalyst), then scraping a perovskite precursor solution on the catalyst modified layer, and annealing the perovskite precursor solution.
In the full-printed solar cell provided by the embodiment of the invention, the perovskite layer is passivated by using the oxamide passivation layer, and an expensive Spiro-OMeTAD hole transport layer is not required to be prepared, so that the cost of the perovskite solar cell is greatly reduced. The oxamide can be dissolved in diethyl ether which is a benign solvent, does not destroy perovskite, and can be coated by a doctor blade process. The carbonyl group in the oxamide is capable of under-coordinating with the perovskite surface metal ion (Pb 2+ ) And a Lewis acid-base pair is formed, so that the defect state density of the perovskite surface is obviously reduced, the perovskite surface defects are passivated, and the efficiency and the stability of the battery are improved. The introduction of the oxamide can also form a proper energy level gradient between the perovskite and the electrode layer, so that the separation and transmission of carriers on the interface of the perovskite layer and the electrode layer are effectively improved, the short-circuit current and the open-circuit voltage of the solar cell are improved, and the efficiency of the solar cell is improved. Therefore, the embodiment of the invention uses the oxamide passivation layer to replace the traditional hole transport layer, so that the solar cell can have better photoelectric performance even without the hole transport layer.
In addition, in the full-printed solar cell provided by the embodiment of the invention, the electron transmission layer, the perovskite layer, the oxamide passivation layer and the electrode layer can be prepared by a knife coating process, the preparation process is simple, the commercial application of perovskite is facilitated, and the full-printed solar cell has wide market demands and application prospects.
The embodiment of the invention also provides a preparation method of the full-printed solar cell, which is used for preparing the full-printed solar cell in the embodiment shown in fig. 2, and the preparation method comprises the following steps of:
s10: an electron transport layer is prepared on a conductive substrate using a doctor blade process.
Specifically, an electron transport layer material is first prepared; then the prepared electron transport layer material is scraped onto the cleaned conductive substrate, and then annealing treatment is carried out, so that an electron transport layer can be formed on the conductive substrate, and the structure of the obtained sample is shown in fig. 4 (a).
The conductive substrate may be ITO conductive substrate, and the electron transport layer material may be 5-7wt% SnO 2 An aqueous nanoparticle solution. For example, 15wt% SnO may be used 2 The aqueous nanoparticle solution was diluted to 6.5wt% and treated in an ultrasonic bath at a power of 450W for 20 minutes. Then, it was knife-coated to 2.5cm at a speed of 10mm/s 2 ×2.5cm 2 The doctor blade maintains a gap of 150 μm with the ITO conductive substrate. Then annealing at 150 ℃ for 60 minutes to form SnO on the ITO conductive substrate 2 An electron transport layer.
S20: and preparing the perovskite layer on the electron transport layer by using a knife coating process.
Specifically, a catalyst Ni (nickel catalyst) is firstly scraped on the electron transport layer to form a catalyst Ni modification layer; then scraping and coating perovskite precursor liquid with the concentration of 1-2 mol/L on the catalyst modified layer; then annealing treatment is carried out to form a perovskite layer on the electron transport layer, and the structure of the obtained sample is shown in fig. 4 (b).
Exemplary, 0.4M FAI, 0.48M MAI, 1M PbI 2 Mixing guanidine chloride 0.12M with 2-ME/NMP, stirring for 2 hr to obtain perovskite precursor solution with concentration of 1M, wherein perovskite is FA 0.4 MA 0.6-x GA x PbI 3 X is between 0 and 0.6; wherein 2-ME is 2-methoxyethanol, NMP is 1-methyl-2-pyrrolidone, and the volume ratio of 2-ME to NMP is 20:1, a step of; FAI, MAI, pbI 2 The mass percentage concentration of guanidine chloride is 98%, 99.99% and 99% in sequence. Then, scraping the perovskite precursor liquid onto the catalyst modified layer at a speed of 3mm/s to form a perovskite liquid film, wherein the gap between the scraper and the catalyst modified layer is 100 mu m; the sample was then heated on a hot plate at 120 ℃ for 10 minutes to form a perovskite layer.
S30: and preparing an oxamide passivation layer on the perovskite layer by using a knife coating process.
Specifically, firstly, preparing an ether solution of oxamide, wherein the concentration of the oxamide in the solution is 0.05-10 mg/mL; then, the prepared solution is scraped to be coated on a perovskite layer; after the knife coating, annealing treatment is carried out, the annealing temperature can be 60-70 ℃, so that an oxamide passivation layer can be formed on the perovskite layer, and the structure of the obtained sample is shown in fig. 4 (c).
Illustratively, an ether solution of oxamide at a concentration of 0.5mg/mL may be knife coated onto the perovskite layer at a constant speed of 10mm/s and a gap between the knife blade and the perovskite layer of 150 μm; subsequently, the sample was annealed at 65 ℃ for 10 minutes to form an oxamide passivation layer on the perovskite layer.
S40: and preparing the electrode layer on the oxamide passivation layer by using a knife coating process.
Specifically, the electrode material is coated on the oxamide passivation layer by knife coating, and then annealing treatment is performed, so that the electrode layer can be formed on the oxamide passivation layer, and the structure of the obtained sample is shown in fig. 4 (d).
The electrode material may be, for example, a carbon paste, which is applied by doctor blade to the oxamide passivation layer, the doctor blade being spaced from the electron transport layer by a distance of 50 μm, the doctor blade being moved at a constant speed of 15mm/s. Then, the sample was heated on a hot plate at 120℃for 15 minutes, and a carbon electrode was formed on the oxamide passivation layer.
In the preparation method of the full-printed solar cell provided by the embodiment of the invention, the perovskite layer is passivated by the oxamide passivation layer, an expensive Spiro-OMeTAD hole transport layer is not needed, and the cost of the perovskite solar cell is greatly reduced. The oxamide can be dissolved in diethyl ether which is a benign solvent, does not destroy perovskite, and can be coated by a doctor blade process. The carbonyl group in the oxamide is capable of under-coordinating with the perovskite surface metal ion (Pb 2+ ) And a Lewis acid-base pair is formed, so that the defect state density of the perovskite surface is obviously reduced, the perovskite surface defects are passivated, and the efficiency and the stability of the battery are improved. The introduction of the oxamide can also form a proper energy level gradient between the perovskite and the electrode layer, so that the separation and transmission of carriers on the interface of the perovskite layer and the electrode layer are effectively improved, the short-circuit current and the open-circuit voltage of the solar cell are improved, and the efficiency of the solar cell is improved. Thus, embodiments of the present invention use oxamides to prepare passivation layers in place of conventional hole transport layersThe prepared solar cell has better photoelectric property, so that the solar cell with high efficiency can be prepared. In addition, the electron transport layer, the perovskite layer, the oxamide passivation layer and the electrode layer can be prepared by utilizing a knife coating process, so that the preparation process of the embodiment of the invention is simple, is beneficial to promoting the commercial application of perovskite, and has wide market demands and application prospects.
The beneficial effects of the full-printed solar cell and the preparation method thereof provided by the embodiment of the invention are described below through specific experimental data.
Experiment 1: a full-printed solar cell was prepared and tested for performance according to the method shown in fig. 3, and the preparation process and test results were as follows:
(1) 15wt% SnO 2 The aqueous nanoparticle solution was diluted to 6.5wt% and treated in an ultrasonic bath at a power of 450W for 20 minutes. Then knife coated at a rate of 10mm/s for 2.5cm of treated material 2 ×2.5cm 2 The doctor blade maintains a gap of 150 μm with the ITO conductive substrate. Then annealing at 150 ℃ for 60 minutes to form SnO on the ITO conductive substrate 2 An electron transport layer.
(2) FAI (0.4M, 98%), MAI (0.48M, 98%), pbI 2 (1M, 99.99%), GACl (0.12M, 99%) were mixed in 2-ME/NMP and stirred for 2 hours to form a perovskite precursor solution having a concentration of 1M, wherein the volume ratio of 2-ME and NMP was 20:1. in SnO 2 Preparing a catalyst modified layer on the electron transport layer; the perovskite precursor liquid is scraped onto the CATNI modification layer at a speed of 3mm/s, and the gap between the scraper and the CATNI modification layer is 100 mu m, so that a perovskite liquid film is formed. The sample was then heated on a hot plate at 120 ℃ for 10 minutes to form a perovskite layer.
(3) An ether solution of oxamide with the concentration of 0.5mg/mL is scraped onto the perovskite layer, the clearance between the scraper blade and the perovskite layer is 150 mu m, the uniform speed of the scraper is 15mm/s, and then the oxamide passivation layer is obtained by annealing at 60 ℃ for 10 minutes.
(4) A carbon paste was knife-coated on the oxamide passivation layer with a knife at a knife speed of 15mm/s with a gap of 50 μm maintained between the knife and the electron transport layer, and then the sample was heated on a hot plate at 120℃for 15 minutes to obtain a carbon electrode.
(5) Electrodes were drawn from the ITO conductive substrate and the carbon electrode, respectively, and performance test was performed under room temperature simulated sunlight (AM 1.5), and the test result is shown in fig. 5, with a battery efficiency of 10.47%. The short-circuit current was 21.50mA/cm 2 The open circuit voltage was 1.06V and the fill factor was 0.468.
Experiment 2: another type of fully printed solar cell was prepared and tested for performance according to the method shown in fig. 3, and the preparation process and test results were as follows:
(1) 15wt% SnO 2 The aqueous nanoparticle solution was diluted to 6.5wt% and treated in an ultrasonic bath at a power of 450W for 20 minutes. Then knife coated at a rate of 10mm/s for 2.5cm of treated material 2 ×2.5cm 2 The doctor blade maintains a gap of 150 μm with the conductive substrate on the ITO conductive substrate. Then annealing at 150 ℃ for 60 minutes to form SnO on the ITO conductive substrate 2 An electron transport layer.
(2) FAI (0.4M, 98%), MAI (0.48M, 98%), pbI 2 (1M, 99.99%), GACl (0.12M, 99%) were mixed in 2-ME/NMP and stirred for 2 hours to form a perovskite precursor solution having a concentration of 1M, wherein the volume ratio of 2-ME and NMP was 20:1. in SnO 2 And preparing a catalyst modified layer on the electron transport layer. The perovskite precursor solution is scraped onto the CATNI finishing layer at a speed of 3mm/s, and the gap between the scraper and the CATNI finishing layer is 100 mu m. The perovskite liquid film was heated on a hot plate at 120 ℃ for 10 minutes to form a perovskite layer.
(3) An ether solution of oxamide with the concentration of 0.75mg/mL is scraped onto the perovskite layer, the clearance between the scraper blade and the perovskite layer is 150 mu m, the uniform speed of the scraper is 15mm/s, and then the oxamide passivation layer is obtained by annealing at 60 ℃ for 10 minutes.
(4) The carbon paste was knife-coated on the oxamide passivation layer with a knife at a knife coating speed of 15mm/s, the knife kept a gap of 50 μm from the electron transport layer, and heated on a hot plate at 120℃for 15 minutes to obtain a carbon electrode.
(5) Electrodes are respectively led out from the ITO conductive substrate and the carbon electrode, and sunlight is simulated at room temperaturePerformance testing was performed at the lower level (AM 1.5) and the cell efficiency was 11.07% as shown in fig. 6. The short-circuit current was 21.53mA/cm 2 The open circuit voltage was 1.06V and the fill factor was 0.485.
Experiment 3: the full-printing solar cell is prepared according to the following steps:
A. preparing an electron transport layer on a conductive substrate by using a knife coating process;
B. preparing a perovskite layer on the electron transport layer by using a knife coating process;
C. scraping an ether solution which does not contain oxamide on the perovskite layer by using a scraping process, and then carrying out annealing treatment;
D. the electrode layer was prepared using a knife coating process.
It can be seen that the cell preparation process of experiment 3 is substantially similar to experiments 1 and 2, except that no oxamide was added to the ether solution in experiment 3, so that experiment 3 is a comparative experiment compared to experiments 1 and 2, and is used to verify the beneficial effect of the oxamide passivation layer used in the examples of the present invention on the perovskite solar cell. The detailed preparation process and test results of this experiment 3 are as follows:
(1) 15wt% SnO 2 The aqueous nanoparticle solution was diluted to 6.5wt% and treated in an ultrasonic bath at a power of 450W for 20 minutes. Then knife coated at a rate of 10mm/s for 2.5cm of treated material 2 ×2.5cm 2 The doctor blade maintains a gap of 150 μm with the conductive substrate on the ITO conductive substrate. Then annealing at 150 ℃ for 60 minutes to form SnO on the ITO conductive substrate 2 An electron transport layer.
(2) FAI (0.4M, 98%), MAI (0.48M, 98%), pbI 2 (1M, 99.99%), GACl (0.12M, 99%) were mixed in 2-ME/NMP and stirred for 2 hours to form a perovskite precursor solution having a concentration of 1M, wherein the volume ratio of 2-ME and NMP was 20:1. in SnO 2 And preparing a catalyst modified layer on the electron transport layer. The perovskite precursor solution is scraped onto the CATNI finishing layer at a speed of 3mm/s, and the gap between the scraper and the CATNI finishing layer is 100 mu m. The perovskite liquid film was heated on a hot plate at 120 ℃ for 10 minutes to form a perovskite layer.
(3) The diethyl ether solution was knife coated onto the perovskite layer with a gap of 150 μm between the doctor blade and the perovskite layer, and the doctor blade was moved at a constant speed of 15mm/s, followed by annealing at 60℃for 10 minutes.
(4) The carbon paste was knife-coated with a doctor blade at a knife coating speed of 15mm/s with a gap of 50 μm between the doctor blade and the electron transport layer, and heated on a hot plate at 120℃for 15 minutes to obtain a carbon electrode.
(5) Electrodes are respectively led out from the ITO conductive substrate and the carbon electrode, and performance test is carried out under room temperature simulated sunlight (AM 1.5), the test result is shown in figure 4, the battery efficiency is 9.14%, and the short-circuit current is 18.22mA/cm 2 Open circuit voltage 1.01V, fill factor 0.496.
As can be seen from comparative experiments 1-3, the embodiment of the invention improves the battery efficiency by about 2 percent and improves the short-circuit current of the battery by about 3mA/cm by introducing the oxamide passivation layer between the perovskite layer and the electrode layer 2 The open-circuit voltage of the battery is increased by 0.05V, and the beneficial effects of the embodiment of the invention are proved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
Although the invention is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings and the disclosure. In the description of the present invention, the word "comprising" does not exclude other elements or steps, the "a" or "an" does not exclude a plurality, and the "a" or "an" means two or more, unless specifically defined otherwise. Moreover, some measures are described in mutually different embodiments, but this does not mean that these measures cannot be combined to produce a good effect.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. An all-printed solar cell, comprising:
a conductive substrate;
an electron transport layer overlying the conductive substrate;
a perovskite layer superimposed on the electron transport layer;
an oxamide passivation layer overlying the perovskite layer;
an electrode layer overlying the oxamide passivation layer;
the electron transport layer, the perovskite layer, the oxamide passivation layer and the electrode layer are all prepared through a knife coating process.
2. The full-printed solar cell according to claim 1, wherein the perovskite layer is obtained by firstly modifying the electron transport layer with catNi, then scraping perovskite precursor liquid on the catNi modification layer, and performing annealing treatment.
3. The all-printed solar cell of claim 1, wherein the electron transport layer comprises: snO (SnO) 2 An electron transport layer.
4. The all-printed solar cell of claim 1, wherein the electrode layer comprises: and a carbon electrode layer.
5. The all-printed solar cell of claim 1, wherein the conductive substrate comprises: an ITO conductive substrate.
6. A method of making an all-printed solar cell comprising:
preparing an electron transport layer on a conductive substrate by using a knife coating process;
preparing a perovskite layer on the electron transport layer by using a knife coating process;
preparing an oxamide passivation layer on the perovskite layer by using a knife coating process;
and preparing an electrode layer on the oxamide passivation layer by using a knife coating process.
7. The method of producing a full print solar cell of claim 6, wherein producing an oxamide passivation layer on the perovskite layer using a knife coating process comprises:
preparing an ether solution of oxamide; wherein, the concentration of the oxamide is 0.05-10 mg/mL;
spreading an ether solution of oxamide on the perovskite layer;
and performing annealing treatment to form an oxamide passivation layer on the perovskite layer.
8. The method for manufacturing a full-printed solar cell according to claim 7, wherein the annealing temperature of the annealing treatment is 65 ℃ and the annealing time period is 10 minutes.
9. The method of producing a full print solar cell according to claim 7, wherein a doctor blade is spaced from the perovskite layer by 150 μm at a doctor blade speed of 10mm/s when doctor blade is applied to the perovskite layer with an ether solution of oxamide.
10. The method of manufacturing a full print solar cell according to claim 6, wherein the preparing a perovskite layer on the electron transport layer using a doctor blade process comprises:
scraping and coating the catalyst Ni on the electron transport layer to form a catalyst Ni modification layer;
scraping perovskite precursor liquid on the catalyst modified layer;
and performing annealing treatment to form a perovskite layer on the electron transport layer.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107369770A (en) * | 2017-07-14 | 2017-11-21 | 南京航空航天大学 | A kind of preparation method of cryogenic carbon based perovskite carbon electrode layer used for solar batteries |
| CN115802769A (en) * | 2022-12-02 | 2023-03-14 | 宣城先进光伏技术有限公司 | Perovskite solar cell and preparation method thereof |
| CN115988886A (en) * | 2022-12-08 | 2023-04-18 | 苏州旺顺源光电科技有限公司 | 2D-3D high-stability perovskite solar cell and preparation method thereof |
| CN116193878A (en) * | 2023-03-15 | 2023-05-30 | 河北工业大学 | Amine halide salt doped carbon-based perovskite solar cell |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369770A (en) * | 2017-07-14 | 2017-11-21 | 南京航空航天大学 | A kind of preparation method of cryogenic carbon based perovskite carbon electrode layer used for solar batteries |
| CN115802769A (en) * | 2022-12-02 | 2023-03-14 | 宣城先进光伏技术有限公司 | Perovskite solar cell and preparation method thereof |
| CN115988886A (en) * | 2022-12-08 | 2023-04-18 | 苏州旺顺源光电科技有限公司 | 2D-3D high-stability perovskite solar cell and preparation method thereof |
| CN116193878A (en) * | 2023-03-15 | 2023-05-30 | 河北工业大学 | Amine halide salt doped carbon-based perovskite solar cell |
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