CN111243866B - Double-dye co-sensitive solar cell - Google Patents
Double-dye co-sensitive solar cell Download PDFInfo
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- CN111243866B CN111243866B CN202010064220.6A CN202010064220A CN111243866B CN 111243866 B CN111243866 B CN 111243866B CN 202010064220 A CN202010064220 A CN 202010064220A CN 111243866 B CN111243866 B CN 111243866B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
- H01G9/2063—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution comprising a mixture of two or more dyes
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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
- Y02E10/542—Dye sensitized solar cells
Abstract
The invention discloses a double-dye co-sensitive solar cell which comprises a reference electrode, a working electrode, a double-dye system, an electrolyte solution and a counter electrode, wherein the double-dye system is attached to the working electrode, the reference electrode, the working electrode and the counter electrode are arranged in the electrolyte solution, the working electrode is composed of a conductive matrix, the double-dye system attached to the conductive matrix and red copper connected to the double-dye system, and the double-dye system comprises N3 dye, 3.4.9.10-tetracarboxylic anhydride dye and titanium dioxide. The double-dye co-sensitive solar cell has good photoelectric conversion performance, and the photocurrent is as high as 1.46 multiplied by 10 under the illumination of natural light‑5A/cm2The photocurrent is higher by one order of magnitude than that of a perovskite solar cell which only uses N3 dye; the system is stable, and the generated photocurrent has good stability.
Description
Technical Field
The present invention relates to a solar cell, and more particularly, to a dual dye-sensitized solar cell.
Background
The dye-sensitized solar cell is an important component of a dye-sensitized solar cell, and the dye-sensitized solar cell is an energy conversion device which takes low-cost nano titanium dioxide and photosensitive materials as main raw materials and takes sunlight as an excitation condition to perform photoelectric conversion, and because some photosensitive materials are adsorbed on titanium dioxide, the photoelectric conversion rate of sunlight is high, such as perovskite and N3 dye, the dye-sensitized solar cell is widely applied to the light energy conversion devices such as solar cells. The dye-sensitized system is generally prepared by adsorbing a photosensitive material with titanium dioxide, or sintering and curing. At present, research shows that when N3 and perovskite are jointly adsorbed on titanium dioxide, the photoelectric conversion of the solar cell is high, but due to the hydrolysis of the perovskite, the system is extremely unstable, and the application range of dye sensitization is greatly limited.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a double-dye co-sensitized solar cell with a stable dye sensitization system and good photoelectric conversion performance.
The technical scheme is as follows: the invention relates to a double-dye co-sensitive solar cell which comprises a reference electrode, a working electrode, an electrolyte solution and a counter electrode, wherein a double-dye system is attached to the working electrode, the reference electrode, the working electrode and the counter electrode are arranged in the electrolyte solution, the working electrode is composed of a conductive matrix, a double-dye system attached to the conductive matrix and red copper connected to the double-dye system, and the double-dye system comprises N3 dye, 3.4.9.10-tetracarboxylic anhydride dye and titanium dioxide.
Wherein, titanium dioxide in the working electrode is coated on a conductive substrate, an N3 dye and a 3.4.9.10-tetracarboxylic anhydride dye are mixed and then attached to the titanium dioxide, the titanium dioxide is nanoparticles, the concentration of the N3 dye is 0.8-0.12 mmol/L, and the concentration of the 3.4.9.10-tetracarboxylic anhydride dye is 0.8-0.12 mmol/L;
wherein, titanium dioxide in the working electrode is coated on a conductive substrate, an N3 dye is firstly attached to the titanium dioxide, the titanium dioxide is nano-particles, a 3.4.9.10-tetracarboxylic anhydride dye is attached to an N3 dye after sintering, the concentration of the N3 dye is 0.8-0.12 mmol/L, and the concentration of the 3.4.9.10-tetracarboxylic anhydride dye is 0.8-0.12 mmol/L;
wherein, titanium dioxide in the working electrode is coated on a conductive substrate, a 3.4.9.10-tetracarboxylic anhydride dye is firstly attached to the titanium dioxide, the titanium dioxide is nano-particles, and an N3 dye is attached to the 3.4.9.10-tetracarboxylic anhydride dye after sintering, the concentration of the N3 dye is 0.8-0.12 mmol/L, and the concentration of the 3.4.9.10-tetracarboxylic anhydride dye is 0.8-0.12 mmol/L;
wherein, a layer of perovskite is attached outside the double-dye system in the working electrode; the conductive substrate is conductive glass FTO; the reference electrode is a silver chloride electrode; the counter electrode is a platinum electrode; the electrolyte solution is a sodium sulfate solution with the concentration of 0.8-0.12 mol/L.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: 1. good photoelectric conversion performance, and the photocurrent is as high as 1.46 multiplied by 10 under the illumination of natural light-5A/cm2The photocurrent is higher by one order of magnitude than that of a perovskite solar cell which only uses N3 dye; 2. the system is stable, and the generated photocurrent has good stability.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic structural view of example 2;
FIG. 3 is a schematic structural view of embodiment 3;
FIG. 4 is a graph of photocurrent for example 1;
FIG. 5 is a graph of photocurrent for example 2;
FIG. 6 is a graph of photocurrent for example 3;
FIG. 7 is a graph of photocurrent for example 4;
fig. 8 is a graph of photocurrent of the comparative example.
Detailed Description
Example 1
Taking 1cm multiplied by 1.3cm conductive glass FTO, and mixing TiO2Coating the P25-20nm type nanometer titanium dioxide 8 on the conductive surface of the conductive glass FTO, naturally drying, sintering at 450 ℃ for 2h, and cooling for later use;
0.0141g of N3 dye 6 and 0.0078g of 3.4.9.10-tetracarboxylic anhydride dye 7 are respectively weighed and put into a same beaker, and dissolved by 20ml of DMSO solution to prepare a double dye mixed solution of 0.1m mol/L of N3 dye and 3.4.9.10-tetracarboxylic anhydride dye; putting the treated conductive glass FTO into a double-dye mixed solution, soaking and adsorbing for 24 hours, taking out, washing with absolute ethyl alcohol, and drying in the air;
0.4610g of lead iodide PbI are taken20.1580g methylamine hydroiodide is put into a beaker, dissolved by 20ml DMSO solution to prepare 0.1mol/L perovskite solution, the perovskite solution is absorbed by a liquid transfer machine and dropped on the N3 dye-3.4.9.10-tetracarboxylic anhydride mixed dye layer on the conductive glass FTO, the mixture is heated for 30 minutes at 100 ℃, the perovskite 9 is solidified on the conductive glass FTO absorbing dye, and red copper is connected on the conductive surface, thus obtaining the working electrode 2 which is composed of a conductive substrate, a double dye system 3 attached on the conductive substrate and the red copper connected on the double dye system 3 as shown in figure 1;
then, a platinum sheet is used as a counter electrode 5, silver chloride is used as a reference electrode 1, the three electrodes are placed in an electrochemical workstation, 0.1mol/L sodium sulfate aqueous solution is used as an electrolyte solution 4 to form the solar cell structure shown in figure 1, and the working electrode is irradiated by natural light to test the photoelectric performance of the solar cell structure.
Example 2
Taking 1cm multiplied by 1.3cm conductive glass FTO, and mixing TiO2Coating the P25-20nm type nanometer titanium dioxide 8 on the conductive surface of the conductive glass FTO, naturally drying, sintering at 450 ℃ for 2h, and cooling for later use;
0.0141g of N3 dye 6 and 0.0078g of 3.4.9.10-tetracarboxylic anhydride 7 are respectively weighed and dissolved in 20ml of DMSO solution to prepare 0.1m mol/L N3 dye solution and 3.4.9.10-tetracarboxylic anhydride dye solution; putting the treated conductive glass FTO into a N3 dye 6 solution, soaking and adsorbing for 24 hours, taking out, putting into a 3.4.9.10-tetracarboxylic anhydride dye 7 solution, adsorbing and soaking for 24 hours, taking out, washing with absolute ethyl alcohol, and drying in the air;
0.4610g of lead iodide PbI are taken20.1580g methylamine hydroiodide is put into a beaker, dissolved by 20ml DMSO solution to prepare 0.1mol/L perovskite solution, the perovskite solution is absorbed by a liquid transfer machine and dropped on the N3 dye-3.4.9.10-tetracarboxylic anhydride mixed dye layer on the conductive glass FTO, the mixture is heated for 30 minutes at 100 ℃, the perovskite 9 is solidified on the conductive glass FTO absorbing dye, and red copper is connected on the conductive surface, thus obtaining the working electrode 2 which is composed of a conductive substrate, a double dye system 3 attached on the conductive substrate and the red copper connected on the double dye system 3 as shown in figure 2;
then, a platinum sheet is used as a counter electrode 5, silver chloride is used as a reference electrode 1, the three electrodes are placed in an electrochemical workstation, 0.1mol/L sodium sulfate aqueous solution is used as an electrolyte solution 4 to form a solar cell structure shown in figure 2, and the working electrode is irradiated by natural light to test the photoelectric performance of the solar cell structure.
Example 3
Taking 1cm multiplied by 1.3cm conductive glass FTO, and mixing TiO2Coating the P25-20nm type nanometer titanium dioxide 8 on the conductive surface of the conductive glass FTO, naturally drying, sintering at 450 ℃ for 2h, and cooling for later use;
0.0141g N3 dye 6 and 0.0078g 3.4.9.10-tetracarboxylic anhydride dye 7 are respectively weighed and dissolved in 20ml DMSO solution to prepare 0.1m mol/L N3 dye solution and 3.4.9.10-tetracarboxylic anhydride solution; putting the treated conductive glass FTO into a 3.4.9.10-tetracarboxylic anhydride solution, soaking and adsorbing for 24 hours, taking out, putting into an N3 solution, adsorbing and soaking for 24 hours, taking out, washing with absolute ethyl alcohol, and airing;
0.4610g of lead iodide PbI are taken20.1580g methylamine hydroiodide is put into a beaker, dissolved by 20ml DMSO solution to prepare 0.1mol/L perovskite solution, the perovskite solution is absorbed by a liquid transfer machine and dropped on the N3 dye-3.4.9.10-tetracarboxylic anhydride mixed dye layer on the conductive glass FTO, the mixture is heated for 30 minutes at 100 ℃, the perovskite 9 is solidified on the conductive glass FTO absorbing dye, and red copper is connected on the conductive surface, thus obtaining the working electrode 2 which is composed of a conductive substrate, a double dye system 3 attached on the conductive substrate and the red copper connected on the double dye system 3 as shown in figure 3;
then, a platinum sheet is used as a counter electrode 5, silver chloride is used as a reference electrode 1, the three electrodes are placed in an electrochemical workstation, 0.1mol/L sodium sulfate aqueous solution is used as an electrolyte solution 4 to form a solar cell structure shown in figure 3, and the working electrode is irradiated by natural light to test the photoelectric performance of the solar cell structure.
Example 4
Taking 1cm multiplied by 1.3cm conductive glass FTO, and mixing TiO2Coating P25-20nm type nanometer titanium dioxide on the conductive surface of the conductive glass FTO, naturally drying, sintering at 450 ℃ for 2h, and cooling for later use;
0.0141g N3 dye and 0.0078g 3.4.9.10-tetracarboxylic anhydride are respectively weighed and put into a same beaker, and dissolved by 20ml DMSO solution to prepare a double dye mixed solution of 0.1m mol/L N3 dye and 3.4.9.10-tetracarboxylic anhydride; putting the treated conductive glass FTO into a double-dye mixed solution, soaking and adsorbing for 24 hours, taking out, washing with absolute ethyl alcohol, drying in the air, and connecting red copper on a conductive surface to obtain a working electrode consisting of a conductive substrate, a double-dye system attached to the conductive substrate and the red copper connected to the double-dye system;
then, a platinum sheet is used as a counter electrode, silver chloride is used as a reference electrode, the three electrodes are placed in an electrochemical workstation, 0.1mol/L sodium sulfate aqueous solution is used as an electrolyte solution to form a solar cell structure, and the working electrode is irradiated by natural light to test the photoelectric performance of the solar cell structure.
Comparative example
Taking 1cm multiplied by 1.3cm conductive glass FTO, and mixing TiO2Coating P25-20nm type nanometer titanium dioxide on the conductive surface of the conductive glass FTO, naturally drying, sintering at 450 ℃ for 2h, and cooling for later use;
0.0141g N3 dye is respectively weighed and dissolved by 20ml DMSO solution to prepare 0.1m mol/L N3 dye solution; putting the treated conductive glass FTO into a N3 solution, soaking and adsorbing for 24 hours, taking out, washing with absolute ethyl alcohol, and airing;
0.4610g of lead iodide PbI are taken20.1580g of methylamine hydroiodide is put into a beaker, dissolved by 20ml of DMSO solution to prepare 0.1mol/L perovskite solution, the perovskite solution is absorbed by a liquid transfer machine and is dripped on an N3 dye layer on conductive glass FTO, the heating is carried out for 30 minutes at 100 ℃, the perovskite is solidified on the conductive glass FTO absorbing the dye, and red copper is connected on a conductive surface, thus obtaining a working electrode;
then, a platinum sheet is used as a counter electrode, silver chloride is used as a reference electrode, the three electrodes are placed in an electrochemical workstation, 0.1mol/L sodium sulfate aqueous solution is used as an electrolyte solution to form a solar cell structure, and the working electrode is irradiated by natural light to test the photoelectric performance of the solar cell structure.
The photocurrents of examples 1-4 and comparative examples are shown in Table 1:
TABLE 1 comparison of photocurrent for examples 1-4 and comparative examples
As can be seen from FIGS. 4 to 8, example 1The photoelectric conversion performance is excellent, and the exciting light current per square centimeter reaches 10-5Of order a, but the photocurrent will drop with time. The photocurrent of example 2 was small. The photocurrent of example 3 was more stable, but the value was smaller, and the photocurrent of example 4 was also smaller. The comparative example is a good-performance N3 dye perovskite system, and although the photocurrent is greater than that of examples 2, 3 and 4 and less than that of example 1, the photocurrent stability of examples 1-4 is better than that of the comparative example.
Under the same natural light illumination condition, the photoelectric conversion performance of the system is better when the photocurrent is larger, so that the photoelectric conversion performance of the two-dye mixed perovskite system in the embodiment 1 is higher than that of the other embodiments.
Claims (9)
1. A double-dye co-sensitive solar cell, which is characterized by comprising a reference electrode (1), a working electrode (2), a double-dye system (3), an electrolyte solution (4) and a counter electrode (5), wherein the double-dye system (3) is attached to the working electrode (2), the reference electrode (1), the working electrode (2) and the counter electrode (5) are placed in the electrolyte solution (4), the working electrode (2) is composed of a conductive matrix, the double-dye system (3) attached to the conductive matrix and red copper connected to the double-dye system (3), the double-dye system (3) comprises N3 dye (6), 3.4.9.10-tetracarboxylic anhydride dye (7), titanium dioxide (8) and perovskite (9), and the perovskite (9) is attached to the double-dye system (3).
2. The double dye-sensitized solar cell according to claim 1, characterized in that the working electrode (2) is coated with titanium dioxide (8) on a conductive substrate, the N3 dye (6) is mixed with 3.4.9.10-tetracarboxylic anhydride dye (7) and then attached to the titanium dioxide (8), the titanium dioxide (8) is nanoparticles, the concentration of the N3 dye (6) is 0.8-0.12 mmol/L, and the concentration of the 3.4.9.10-tetracarboxylic anhydride dye (7) is 0.8-0.12 mmol/L.
3. The dual dye-sensitized solar cell according to claim 1, characterized in that the working electrode (2) is coated with titanium dioxide (8) on a conductive substrate, the N3 dye (6) is attached to the titanium dioxide (8) first, the titanium dioxide (8) is nanoparticles, and after sintering, the 3.4.9.10-tetracarboxylic anhydride dye (7) is attached to the N3 dye (6), the N3 dye (6) concentration is 0.8 to 0.12mmol/L, and the 3.4.9.10-tetracarboxylic anhydride dye (7) concentration is 0.8 to 0.12 mmol/L.
4. The dual dye-sensitized solar cell according to claim 1, characterized in that the working electrode (2) is coated with titanium dioxide (8) on a conductive substrate, the 3.4.9.10-tetracarboxylic anhydride dye (7) is attached to the titanium dioxide (8) first, the titanium dioxide is nanoparticles (8), the coating after firing attaches N3 dye (6) on the 3.4.9.10-tetracarboxylic anhydride dye (7), the concentration of the N3 dye (6) is 0.8-0.12 mmol/L, and the concentration of the 3.4.9.10-tetracarboxylic anhydride dye (7) is 0.8-0.12 mmol/L.
5. The double dye-sensitized solar cell according to any one of claims 2 to 4, characterized in that a layer of perovskite (9) is attached to the double dye system (3) in the working electrode (2).
6. The dual dye-sensitized solar cell according to claim 1, characterized in that said conductive matrix is a conductive glass FTO.
7. The dual dye-sensitized solar cell according to claim 1, characterized in that said reference electrode (1) is a silver chloride electrode.
8. The dual dye-sensitized solar cell according to claim 1, characterized in that said counter electrode (5) is a platinum electrode.
9. The dual dye-sensitized solar cell according to claim 1, characterized in that said electrolyte solution (4) is a sodium sulfate solution with a concentration of 0.8-0.12 mol/L.
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