CN116193878A - Amine halide salt doped carbon-based perovskite solar cell - Google Patents

Amine halide salt doped carbon-based perovskite solar cell Download PDF

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CN116193878A
CN116193878A CN202310246127.0A CN202310246127A CN116193878A CN 116193878 A CN116193878 A CN 116193878A CN 202310246127 A CN202310246127 A CN 202310246127A CN 116193878 A CN116193878 A CN 116193878A
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carbon
amine
perovskite
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carbon electrode
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陈佳雨
郑士建
邵盼杰
赵智鑫
张世宁
张贤
吴存存
张阳洋
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Hebei University of Technology
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Abstract

The invention relates to a halide amine salt doped carbon-based perovskite solar cell. The battery comprises a transparent conductive substrate, an electron transport layer, and perovskiteA mineral light absorbing layer and a carbon electrode; the carbon electrode is doped with conjugated amine halide salt, and the doping amount is 0.1-5wt%; the perovskite light absorption layer material has the structural formula of APbX 3 . The preparation process is simple, efficient and low in cost, the defect density of the obtained carbon-based perovskite solar cell is reduced at the carbon electrode/perovskite interface, non-radiative recombination is reduced, the carrier extraction and transmission capacity is obviously improved, the stability and efficiency are obviously improved, and the preparation process has a good application prospect in the field of photovoltaic devices.

Description

Amine halide salt doped carbon-based perovskite solar cell
Technical Field
The invention belongs to the field of novel semiconductor photoelectric materials and devices, and particularly relates to a method for preparing a carbon-based perovskite solar cell from amine halide-doped carbon slurry.
Background
At present, energy used by human beings mainly uses fossil fuel, but the energy storage is limited, so that the increasing energy demand cannot be met, and the pollution of combustion products generated in the combustion process to the environment causes the problems of global climate deterioration and the like. Compared with the traditional energy, the solar energy source is wider, renewable, environment-friendly and pollution-free, and how to more efficiently utilize the solar energy becomes a key problem of the current research of people. Among photovoltaic materials, organic-inorganic hybrid perovskite materials are attracting attention by virtue of excellent photoelectric properties such as high carrier mobility, high light absorption coefficient, band gap tunability, and the like. The photoelectric conversion efficiency of perovskite solar cells breaks through 25% from 3.8% in 2009, the development of the perovskite solar cells in the short decades is very close to that of silicon-based solar cells in the decades, and the perovskite solar cells have low cost, high photoelectric conversion efficiency and huge development potential, so that huge commercial space is brought.
However, when preparing Perovskite Solar Cells (PSCs) devices, conventional devices use noble metals such as silver (Ag) or gold (Au) as back electrodes to collect photo-generated holes, but noble metals are expensive and are easily eroded by halogen ions, resulting in excessive device cost, complicated preparation process and poor stability, which prevents perovskite solar cells from realizing large-scale commercial use. Therefore, the counter electrode material with excellent development performance, low price and strong chemical stability has important research value and practical significance. Carbon materials have the advantages of low cost, stable chemical properties, good conductivity, strong hole extraction capability and the like, and in recent years, the research of the carbon materials as perovskite solar cells on electrodes has been gradually focused.
The carbon-based perovskite solar cell has the advantages that due to poor contact of a carbon electrode/perovskite interface, a large number of defects exist at the interface, hole extraction is hindered, charge non-radiative recombination is aggravated, kinetic energy loss is serious, and device efficiency is low. The patent CN114300621A uses the mixed solution of PEAI and EAI to spin-coat the carbon electrode/perovskite layer to form an energy level transition layer to improve interface contact, but the preparation process is complex due to the steps of spin-coating, annealing and the like, and the practicality is poor in large-area production. Therefore, it is important to find a simple method for improving the carbon electrode/perovskite interface contact and improving the overall efficiency and stability of the device.
Disclosure of Invention
The invention aims to provide a halide amine salt doped carbon-based perovskite solar cell with a conjugated structure, aiming at the problems that the carbon electrode/perovskite interface of the carbon-based perovskite solar cell has a plurality of defects, the performance is poor and the practical application is difficult. The battery is ground and mixed with carbon slurry through solid-state amine halide salt, and doping of the carbon electrode by the amine halide salt is completed. The amine salt and the three-dimensional perovskite react in situ to generate a two-dimensional perovskite layer with a wide forbidden band, so that the surface defects of the three-dimensional perovskite can be effectively passivated, and the defects at the interface of the carbon electrode and the perovskite are reduced. Meanwhile, the two-dimensional perovskite with wide forbidden band can block non-radiative recombination of photo-generated electrons between the carbon electrode and the perovskite layer, so that the stability and the efficiency of the device are improved. The preparation process is simple, efficient and low in cost, the defect density of the obtained carbon-based perovskite solar cell is reduced at the carbon electrode/perovskite interface, non-radiative recombination is reduced, the carrier extraction and transmission capacity is obviously improved, the stability and efficiency are obviously improved, and the preparation process has a good application prospect in the field of photovoltaic devices.
The technical scheme of the invention is as follows:
an amine halide salt doped carbon-based perovskite solar cell includes a transparent conductive substrate, an electron transport layer, a perovskite light absorbing layer, and a carbon electrode.
The carbon electrode is doped with amine halide salt, and the doping amount is 0.1-5 wt%.
The amine halide salts include, but are not limited to: phenethylamine chloride (PEACl), phenethylamine bromide (PEABr), 2, 5-dichloro-1, 4-phenylenediamine (C) 6 H 6 Cl 2 N 2 ) One or more of benzyltriethylammonium chloride (TEBACl), benzyltrimethylammonium chloride (PMACL), p-methoxyphenylethylamine chloride (4-MeOPEACl), o-methoxyphenylethylamine chloride (2-MeOPEACl), benzylmethylamine chloride (PMACL), benzylammonium bromide (PMAbr), phenylbutylammonium chloride (PhBACl), phenylbutylammonium iodide (PhBAI), o-fluorophenylmethylamine chloride (o-F-PMACL), o-fluorophenylethylamine chloride (o-F-PEABr), o-fluorophenylethylamine iodide (o-F-PEAI);
the perovskite light absorption layer material has the structural formula of APbX 3 Wherein the A-position is cesium ion (Cs + ) Methylamine cation (MA) + ) And formamidine cation (FA + ) One or more of the following; x is chloride ion (Cl) - ) Bromide ion (Br) - ) Iodide ion (I) - ) Fluoride ion (F) - ) One or more of the following;
the electron transport layer is tin dioxide (SnO) 2 ) Titanium dioxide (TiO) 2 )、[6,6]Phenyl C61-methyl butyrate (PCBM), carbon 60 (C60), zinc oxide (ZnO), tiO 2 -SnO 2 、ZnO-TiO 2 、ZnO-SnO 2 At least one of (a) and (b);
the substrate is indium tin oxide transparent conductive film glass (ITO) and fluorine doped SnO 2 One of conductive glass (FTO), PET/ITO (PET is polyethylene terephthalate) and PEN/ITO (PEN is polyethylene naphthalate);
the carbon electrode is one or more of graphite, carbon slurry, carbon black, carbon nano tube and graphene;
the thickness of the electron transport layer is 1-200nm, the thickness of the perovskite active layer is 100-1000nm, and the thickness of the carbon electrode is 5-100 mu m;
the preparation method for preparing the carbon-based perovskite solar cell by using the amine halide salt doped carbon slurry is characterized by comprising the following steps of:
1) Preparing an electron transport layer on the cleaned transparent conductive glass substrate;
2) Preparing a perovskite light absorption layer on the electron transport layer;
3) On the perovskite light absorbing layer, an amine halide salt doped carbon electrode was prepared: adding amine halide salt into the carbon slurry, grinding for 5-30 min, coating the carbon slurry on a perovskite light absorption layer, and annealing for 10-30 min at 50-150 ℃ to obtain the carbon electrode.
Wherein, the doping proportion of the amine halide salt is 0.1 to 5 weight percent;
the sheet resistance of the carbon slurry is less than 30Ω, and the solid content is 40-60%.
The preparation method of the three-dimensional perovskite thin film in the step 2) comprises the following steps:
preparing a perovskite light absorption layer by a low-pressure auxiliary method under the conditions that the ambient temperature is 1-50 ℃ and the ambient relative humidity is 2% -60%: spin-coating perovskite precursor solution with the concentration of 0.5-2 mol/L on an electron transmission layer, and adjusting the rotating speed of spin-coating equipment to 1000-6000 rpm for 5-60 s; then the low-pressure treatment time is 10 to 120s under the pressure of 1 to 200Pa, and then the annealing is carried out for 30 to 50min at the temperature of 50 to 150 ℃ to form a perovskite light absorption layer; the concentration of the perovskite precursor solution is calculated according to the concentration of Pb element.
The solvent of the perovskite mixed solution comprises one or more of N, N-Dimethylformamide (DMF), N-methylpyrrolidone (NMP), dimethylacetamide (DMAc), dimethyl sulfoxide (DMSO), acetonitrile (CAN), methyl acetate, methylamine formate, methylamine butyrate, methanol and gamma-butyrolactone.
The invention has the substantial characteristics that:
through researches, a large number of defects exist at the interface of a carbon electrode and perovskite in the carbon-based perovskite solar cell, and the interface of the carbon electrode and the perovskite lacks a potential barrier for blocking electron reverse injection, so that non-radiative recombination of photo-generated holes is easy to cause, and the performance of the cell is greatly negatively affected. In the prior art, the extraction rate of holes is generally improved by introducing a Hole Transport Layer (HTL), and the transport performance of carriers is improved. However, the commonly used hole transport layer reacts with the perovskite layer, so that the stability of the device is reduced, the cost is high, and the mass production of the device is not facilitated.
The invention does not need to adopt a hole transport layer to improve the hole extraction capability of the carbon electrode, but directly uses the carbon slurry doped with the halide amine salt with the conjugated structure. The work function of the carbon electrode is regulated and controlled through the addition of the amine halide, so that the contact property of the carbon electrode and a perovskite layer is improved, the three-dimensional perovskite is changed at the interface of the carbon electrode and the perovskite to form a two-dimensional perovskite film, the longitudinal transport of carriers in the device and the inhibition of the decomposition of the perovskite layer are facilitated, the device has more excellent photoelectric performance and stability, and meanwhile, the application of the carbon slurry doped with the amine halide in the field of solar cells is not yet explored.
Compared with pure carbon paste or carbon paste doped with trace elements, the carbon electrode prepared from the carbon paste doped with the amine halide has the characteristics of better matching work function with perovskite, stronger hole extraction capability, fewer defects at the interface with the perovskite layer, quicker carrier transport capability, longer stability and the like. Therefore, the invention adopts the carbon slurry doped with the amine halide salt to prepare the carbon electrode so as to improve the comprehensive performance of the perovskite solar cell.
The beneficial effects of the invention are as follows:
according to the preparation method of the carbon-based perovskite solar cell by using the amine halide salt doped carbon slurry, the defects of the surface of the three-dimensional perovskite can be passivated by generating the two-dimensional perovskite, the energy level matching can be improved, the non-radiative recombination can be reduced, and the degradation and the phase change of the perovskite can be inhibited by the lattice stress. Devices prepared by doping with amine halide salts are compared to devices using ordinary carbon slurries aloneThe open circuit voltage was increased from 1.01V to 1.11V while the fill factor was also increased from 56.69% to 60.31%. In addition, the introduced halide amine salt cations can improve the hydrophobic property of perovskite, inhibit ion migration and improve the stability of the device. In addition, the generated two-dimensional perovskite layer is beneficial to improving the transport capacity of carriers in the device, so that compared with the traditional carbon-based perovskite solar cell, the current density is 22.86mA/cm 2 The temperature is increased to 22.93mA/cm 2 . Compared with the traditional carbon-based perovskite device and the carbon-based perovskite device prepared by using the carbon slurry doped with the amine halide salt, the photoelectric conversion efficiency of the traditional carbon-based perovskite device is 13.06% and 15.29% respectively, and the performance of the traditional carbon-based perovskite device is remarkably improved.
Drawings
FIG. 1 is a schematic diagram of a perovskite solar cell according to the present invention; wherein 1 is a transparent conductive substrate, 2 is an electron transport layer, 3 is a perovskite light absorption layer, and 4 is a carbon electrode;
FIG. 2 is a cross-sectional scanning electron micrograph of a perovskite solar cell device prepared according to the invention;
fig. 3 is a J-V (current-voltage) test curve of a perovskite solar cell device prepared according to the present invention, with a broken line for a device prepared from an amine halide salt doped carbon paste and a solid line for an undoped standard curve.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
Example 1.
The structural schematic diagram of the carbon-based perovskite solar cell prepared by using phenethyl iodized amine (PEAI) doped carbon slurry is shown in fig. 1, and the carbon-based perovskite solar cell sequentially comprises a transparent conductive substrate, an electron transport layer, a perovskite light absorption layer and a carbon electrode with PEAI doping from bottom to top, wherein the specific preparation process is as follows:
step one, cleaning an FTO substrate:
and sequentially and respectively ultrasonically cleaning the FTO substrate for 15min by using a glass cleaning agent, deionized water and absolute ethyl alcohol, and then drying the surface liquid by using a nitrogen gun, wherein the size of the FTO substrate is 25 multiplied by 25mm.
Step two, preparing an electron transport layer TiO 2 ：
Configuring TiO 2 Growth liquid: 2mL of titanium tetrachloride liquid (TiCl 4 ) Dissolve in a blue-mouth bottle containing 100mL deionized water and put into a refrigerator for refrigeration.
Immersing an FTO substrate in a solution containing TiO 2 The growth solution was placed in a dish at 70℃in an oven for 2 hours, whereupon it was taken out. Ultrasonic cleaning with deionized water for 5min, blow drying with nitrogen, annealing at 150deg.C for 60min to obtain TiO 2 An electron transport layer. A thickness of about 50nm;
step three, preparing three-dimensional FA 0.3 MA 0.7 PbI 3 Perovskite light absorbing layer:
configuration of 1.33mol/L FA 0.3 MA 0.7 PbI 3 The perovskite precursor solution contains, based on lead content, solute formamidine iodine (FAI), methyl Amine Iodine (MAI), and lead iodide (PbI) 2 ) The molar amounts were 0.36mmol, 0.84mmol, 1.2mmol, respectively, and 100. Mu.L DMSO and 800. Mu.L DMF were sequentially added as solvents to give 900. Mu.L of perovskite precursor solution.
And (3) spin-coating the prepared perovskite precursor solution on the electron transport layer by adopting a spin coater under the conditions that the ambient temperature is 25 ℃ and the ambient relative humidity is 30%, wherein the rotating speed is 3000rpm, the spin-coating time is 6s, and then immediately placing the perovskite precursor solution into a low-pressure auxiliary system (DL-10A type quartz vacuum gauge and a vacuum pump) for carrying out low-pressure treatment with the vacuum degree of 10Pa for 30s, so that the solvent is quickly volatilized, and a mesophase film with good crystallinity is obtained. Annealing for 20min on a heating table at 150 ℃ after the low-pressure treatment is finished to obtain FA 0.3 MA 0.7 PbI 3 Perovskite thin films. A thickness of about 400nm; wherein the volume of the spin-coated perovskite precursor solution was 60 μl.
Step four, preparing a carbon electrode:
200mg of carbon slurry was weighed, 1mg of PEAI was weighed according to a doping ratio of 0.5wt%, and then ground for 10min by using a grinding rod to mix uniformly. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Wherein the carbon slurry is a known material, and a specific manufacturer is Shanghai maituo chemical new material technology Co., ltd, with CAS number 7440-44-0; the following examples are the same and will not be described. But are not limited thereto.
A cross-sectional scanning electron micrograph of the device produced is shown in figure 2.
In the embodiment, a solar simulator is used for selecting a K-2400 light source to simulate AM 1.5G illumination for testing, and the J-V curve of the prepared device is shown as a broken line in FIG. 3, the open circuit voltage is 1.11V, and the current density is 22.93mA/cm 2 The fill factor was 60.31% and the photoelectric conversion efficiency was 15.29%.
Example 2.
Carbon-based perovskite solar cell prepared by using phenethyl amine bromide (PEABr) doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode, namely weighing 200mg of carbon slurry, weighing 1mg of PEABr according to the doping proportion of 0.5wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 3.
Carbon-based perovskite solar cell prepared from benzyl iodized amine (PMAI) -doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing PMAI 1mg according to the doping proportion of 0.5wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 4.
Other steps of the carbon-based perovskite solar cell prepared from phenethyl iodized amine (PEAI) and phenethyl brominated amine (PEABr) doped carbon slurries were the same as in example 1, except that:
in the fourth step, the carbon electrode is prepared by weighing 200mg of carbon slurry, weighing 1mg of PEAI and TBAI respectively according to the doping proportion of 0.5wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 5.
Other steps of the carbon-based perovskite solar cell prepared from phenethyl iodized amine (pei) and benzyl iodized amine (PMAI) doped carbon slurries were the same as in example 1, except that:
and step four, preparing a carbon electrode, namely weighing 200mg of carbon slurry, weighing 1mg of PEAI and 1mg of PMAI respectively according to the doping proportion of 0.5wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 6.
Carbon-based perovskite solar cell prepared from phenethyl iodized amine (PEAI) -doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing 2mg of PEAI according to the doping proportion of 1wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 7.
Carbon-based perovskite solar cell prepared by phenylbutylammonium chloride (PhBACl) -doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing 2mg of PhBACl according to the doping proportion of 1wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 8.
Carbon-based perovskite solar cell prepared from benzyl iodized amine (PMAI) -doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing PMAI 2mg according to the doping proportion of 1wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 9.
Other steps of the carbon-based perovskite solar cell prepared from phenethyl amine iodide (pei) and phenylbutyl ammonium chloride (PhBACl) doped carbon slurries were the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing 2mg of PEAI and PhBACl respectively according to the doping proportion of 1wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Example 10.
Other steps of the carbon-based perovskite solar cell prepared from phenethyl iodized amine (pei) and benzyl iodized amine (PMAI) doped carbon slurries were the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing 2mg of PEAI and PMAI respectively according to the doping proportion of 1wt%, and grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Comparative example 1.
Carbon-based perovskite solar cell prepared from carbon slurry without doping by halogenated amine salt
The other steps are the same as in example 1, except that:
in the fourth step, only ordinary carbon slurry is used for preparing the carbon electrode, and doping of amine halide salt is not carried out.
The J-V curve of the prepared device is shown as a solid line in FIG. 3, the open circuit voltage is 1.01V, and the current density is 22.86mA/cm 2 The fill factor was 56.69% and the photoelectric conversion efficiency was 13.06%.
Comparative example 2.
Carbon-based perovskite solar cell prepared by tetrabutyl iodized amine (TBAI) -doped carbon slurry
The other steps are the same as in example 1, except that:
in the fourth step, the carbon electrode is prepared by weighing 200mg of carbon slurry, weighing 1mg of TBAI according to the doping proportion of 0.5wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
Comparative example 3.
Carbon-based perovskite solar cell prepared from phenethyl iodized amine (PEAI) -doped carbon slurry
The other steps are the same as in example 1, except that:
and step four, preparing a carbon electrode into 200mg of carbon slurry, weighing 20mg of PEAI according to the doping proportion of 10wt%, and then grinding and uniformly mixing by using a grinding rod. And then the carbon slurry is scraped to be coated above the perovskite light absorption layer to prepare a carbon electrode, and the carbon electrode is annealed for 15min at a heating table of 100 ℃. The thickness is about 10 μm.
TABLE 1 device test parameter tables for example 1 and comparative examples 1, 2 and 3
Treatment mode J SC (mA/cm 2 ) V OC (V) FF(％) PCE(％)
Undoped material 22.86 1.01 56.69 13.06
0.5wt% PEAI doping 22.93 1.11 60.31 15.29
0.5wt% TBAI doping 21.41 0.94 55.88 11.20
10wt% PEAI doping 19.43 0.98 42.83 8.11
Through the above examples and comparative examples, when the carbon electrode is prepared using the amine halide salt doped carbon slurry having a conjugated structure, the morphology of the carbon electrode/perovskite interface can be significantly improved, the interface contact between the carbon electrode and the perovskite light absorbing layer can be improved, the energy level can be more matched, and the non-radiative recombination at the interface can be reduced. However, excessive doping can cause significant degradation in conductivity of the carbon electrode and degradation in overall device performance. When the device is prepared by using the amine halide salt doped carbon electrode, the overall carrier transport capacity is improved, the photoelectric conversion efficiency of the device is improved, and the device has good application prospect in the photovoltaic field.
The invention is not limited to the embodiments described above, which can be varied within the scope of the claims, and the above embodiments and the description merely illustrate the principles of the invention, which can vary and be modified within the scope of the invention as claimed without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
The invention is not a matter of the known technology.

Claims (8)

1. The amine halide salt doped carbon-based perovskite solar cell is characterized by comprising a transparent conductive substrate, an electron transport layer, a perovskite light absorption layer and a carbon electrode;
the carbon electrode is doped with amine halide salt with conjugated structure, and the doping amount is 0.1-5 wt%.
2. The amine halide salt doped carbon-based perovskite solar cell as claimed in claim 1, wherein the amine halide salt of conjugated structure is: one or more of phenethyl amine chloride, phenethyl amine bromide, 2, 5-dichloro-1, 4-phenylenediamine, benzyl triethyl ammonium chloride, benzyl amine chloride, p-methoxyphenethyl amine chloride, o-methoxyphenethyl amine chloride, benzyl amine bromide, phenylbutyl ammonium chloride, phenylbutyl ammonium iodide, o-fluorobenzene methylamine chloride, o-fluorophenethyl amine bromide, o-fluorophenethyl amine iodide.
3. The amine halide doped carbon based perovskite solar cell of claim 1 wherein the perovskite light absorbing layer material has the structural formula APbX 3 Wherein, the A position is one or more of cesium ion, methylamine cation and formamidine cation; x is one or more of chloride ion, bromide ion, iodide ion and fluoride ion;
the electron transport layer is tin dioxide, titanium dioxide, [6,6 ]]Phenyl C61-butanoic acid methyl ester, carbon 60 (C60), zinc oxide, tiO 2 -SnO 2 、ZnO-TiO 2 、ZnO-SnO 2 At least one of (a) and (b);
the substrate is indium tin oxide transparent conductive film glass and fluorine doped SnO 2 One of conductive glass, PET/ITO, PEN/ITO;
the carbon electrode is one or more of graphite, carbon slurry, carbon black, carbon nanotubes and graphene.
4. The amine halide doped carbon based perovskite solar cell of claim 1 wherein the electron transport layer has a thickness of 1-200nm, the perovskite active layer has a thickness of 100-1000nm, and the carbon electrode has a thickness of 5-100 μm.
5. The method for preparing a halogenated amine salt doped carbon-based perovskite solar cell according to claim 1, which is characterized by comprising the following steps:
1) Preparing an electron transport layer on the cleaned transparent conductive glass substrate;
2) Preparing a perovskite light absorption layer on the electron transport layer;
3) On the perovskite light absorbing layer, an amine halide salt doped carbon electrode was prepared: adding amine halide salt into the carbon slurry, grinding for 5-30 min, coating the carbon slurry on a perovskite light absorption layer, and annealing for 10-30 min at 50-150 ℃ to obtain the carbon electrode.
Wherein the doping proportion of the amine halide salt is 0.1-5 wt%.
6. The method for preparing a halogenated amine salt doped carbon-based perovskite solar cell according to claim 5, wherein the sheet resistance of the carbon paste is less than 30 omega, and the solid content is 40-60%.
7. The method for preparing a halogenated amine salt doped carbon-based perovskite solar cell as claimed in claim 5, wherein the preparation of the three-dimensional perovskite thin film in the step 2) is as follows:
preparing a perovskite light absorption layer by a low-pressure auxiliary method under the conditions that the ambient temperature is 1-50 ℃ and the ambient relative humidity is 2% -60%: spin-coating perovskite precursor solution with the concentration of 0.5-2 mol/L on an electron transmission layer, and adjusting the rotating speed of spin-coating equipment to 1000-6000 rpm for 5-60 s; then the low-pressure treatment time is 10 to 120s under the pressure of 1 to 200Pa, and then the annealing is carried out for 30 to 50min at the temperature of 50 to 150 ℃ to form a perovskite light absorption layer; the concentration of the perovskite precursor solution is calculated according to the concentration of Pb element.
8. The method for preparing the amine halide salt doped carbon-based perovskite solar cell according to claim 7, wherein the solvent of the perovskite mixed solution is one or more of N, N-Dimethylformamide (DMF), N-methylpyrrolidone (NMP), dimethylacetamide (DMAc), dimethyl sulfoxide (DMSO), acetonitrile (CAN), methyl ammonia acetate, methylamine formate, methylamine butyrate, methanol and gamma-butyrolactone.
CN202310246127.0A 2023-03-15 2023-03-15 Amine halide salt doped carbon-based perovskite solar cell Pending CN116193878A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117769276A (en) * 2023-12-27 2024-03-26 中环艾能(高邮)能源科技有限公司 Full-printed solar cell and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117769276A (en) * 2023-12-27 2024-03-26 中环艾能(高邮)能源科技有限公司 Full-printed solar cell and preparation method thereof

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