CN115432736B - Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material - Google Patents
Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material Download PDFInfo
- Publication number
- CN115432736B CN115432736B CN202211202511.2A CN202211202511A CN115432736B CN 115432736 B CN115432736 B CN 115432736B CN 202211202511 A CN202211202511 A CN 202211202511A CN 115432736 B CN115432736 B CN 115432736B
- Authority
- CN
- China
- Prior art keywords
- layer
- biox
- solar cell
- interface modification
- perovskite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G29/00—Compounds of bismuth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/42—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application relates to the technical field of solar cells, and discloses an ultrathin BiOX nano material, a solar cell containing the material and a preparation method thereof; the nano material comprises nano sheets with the diameter of 5-200 nm and the thickness of 1-20 nm, and a thin film is formed by the nano sheets and is used as an interface modification layer of a perovskite solar cell. Secondly, due to the hydrophobic property of the exposed surface of BiOX (001), the BiOX is applied to the perovskite solar cell, and the perovskite solar cell is stable for a long time. Therefore, the novel ultrathin BiOX nanomaterial is used as an interface modification layer to be applied to the perovskite solar cell, and the perovskite solar cell with high efficiency and stability can be obtained.
Description
Technical Field
The application relates to the technical field of solar cells. More particularly, to a bisox (x= F, cl, br, I) nanomaterial, a bisox interface modification layer, a solar cell including the interface modification layer, and a method of manufacturing the same.
Background
Organic/inorganic hybrid perovskite solar cells are receiving great attention from the scientific and industrial industries due to their efficient photoelectric conversion efficiency. In the development period of more than ten years, the photoelectric conversion efficiency breaks through 25%, and the development of the crystalline silicon solar cell for more than sixty years is pursued, so that the novel solar technology with the most industrialized application prospect is realized.
Although perovskite solar cells have high photoelectric conversion efficiency, their long-term stability is an important factor restricting commercialization thereof. Therefore, it is necessary to find an interface modification layer which not only has stronger hydrophobic property, but also can increase the built-in electric field of the device by the dipole moment of the interface modification layer, so as to achieve the synergistic improvement of the long-term stability and the open-circuit voltage of the perovskite solar cell.
Disclosure of Invention
Therefore, in view of the above problems of long-term stability and limited open-circuit voltage for solar cells, the present application aims to provide a novel ultrathin BiOX nanomaterial, a preparation method thereof, and a solar cell comprising an interface modification layer of the material, which solve the problems of long-term stability of the existing perovskite solar cell on the basis of improving the open-circuit voltage of the perovskite solar cell, and obtain a perovskite solar cell with long-term stability and high efficiency.
In order to achieve the above object, one aspect of the present application provides an ultra-thin BiOX nanomaterial comprising a biplate having a diameter of 5 to 200nm and a thickness of 1 to 20nm formed by BiOX.
In another aspect of the present application, a method for preparing an ultrathin BiOX nanomaterial is provided, the method comprising the steps of:
adding sodium oleate into deionized water, and stirring for 0.5-2 h to obtain a uniformly mixed solution (1);
bi (NO) 3 ) 3 ·5H 2 Adding O into the solution (1) and stirring for 1-3 h to obtain a mixed mixtureA homogenized solution (2);
adding KX (X= F, cl, br, I) into the solution (2) and stirring for 0.5-3 h to obtain a uniformly mixed solution (3);
carrying out hydrothermal reaction on the obtained solution at 120-200 ℃ for 0.5-2 d, and then washing and drying to obtain a product;
dispersing the obtained product in an ethanol solution of tetrabutylammonium tetrafluoroborate, and carrying out cleaning and drying after ultrasonic treatment for 0.5-3 h.
In another aspect of the present application, there is provided a method for preparing the BiOX film, the method comprising the steps of:
dispersing BiOX nano material in an organic solvent to obtain a dispersion liquid, wherein the nano material comprises nano sheets which are formed by BiOX and have the thickness of 5-200 nm and the thickness of 1-20 nm;
the dispersion is formed into a film by spraying or spin coating.
In yet another aspect of the present application, there is provided a solar cell having a structure including, from bottom to top: the transparent conductive substrate, the electron blocking layer, the perovskite layer, the interface modification layer, the electron transport layer, the buffer layer and the electrode layer, wherein the interface modification layer is a thin film layer containing BiOX nano materials, and the nano materials comprise nano sheets with the diameter of 5-200 nm and the thickness of 1-20 nm formed by the BiOX.
Preferably, the perovskite light absorbing material is ABX 3 ，A＝CH 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; x= I, br, cl, CN, SCN or mixtures thereof.
In a further aspect, the present application provides a method for preparing the solar cell, which includes the following steps: preparing a transparent conductive substrate;
forming an electron blocking layer on the transparent conductive substrate;
forming a perovskite layer on the electron blocking layer;
forming an interface modification layer on the perovskite layer;
forming an electron transport layer on the interface modification layer;
forming a buffer layer on the electron transport layer;
an electrode layer is formed on the buffer layer.
Wherein the interface modification layer is a thin film layer of BiOX nanomaterial, and the nanomaterial comprises a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm formed by BiOX.
In yet another aspect of the present application, there is provided a solar cell having a structure including, from bottom to top: the nano-material comprises a transparent conductive substrate, a hole blocking layer, a perovskite layer, an interface modification layer, a hole transport layer and an electrode layer, wherein the interface modification layer is a thin film layer of a BiOX nano-material, and the nano-material comprises nano-sheets with the diameter of 5-200 nm and the thickness of 1-20 nm formed by the BiOX.
Preferably, the perovskite light absorbing material is ABX 3 ，A＝CH 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; x= I, br, cl, CN, SCN or mixtures thereof.
In a further aspect, the present application provides a method for preparing the solar cell, which comprises the following steps: preparing a transparent conductive substrate;
forming a hole blocking layer on the transparent conductive substrate;
forming a perovskite layer on the hole blocking layer;
forming an interface modification layer on the perovskite layer;
forming a hole transport layer on the interface modification layer; and
an electrode layer is formed on the hole transport layer,
wherein the interface modification layer is a thin film layer of BiOX nanomaterial, and the nanomaterial comprises a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm formed by BiOX.
Advantageous effects
The application adjusts and controls sodium oleate, bi (NO) 3 ) 3 ·5H 2 Preparing nano-sheets of multi-layer BiOX by O and KX (X= F, cl, br, I), and regulating the concentration of tetrabutylammonium tetrafluoroborate and ultrasonic treatmentIn time, a monolayer ultrathin BiOX nanomaterial is prepared, which can form a film for use in perovskite solar cells. Due to the dipole effect of the BiOX, the interface modification layer increases the built-in electric field of the perovskite solar cell, so that the open-circuit voltage of the device is improved. Due to the hydrophobic property of the exposed surface of BiOX (001), the BiOX is applied to a perovskite solar cell, and a perovskite solar cell stable for a long time is obtained. Therefore, the novel ultrathin BiOX nanomaterial is used as an interface modification layer to be applied to the perovskite solar cell, so that the perovskite solar cell can be efficiently and stably obtained.
Drawings
The above and other objects, features and other advantages of the present application will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which,
FIG. 1 shows an atomic force microscope image and corresponding heights of BiOX ultra-thin nanoplatelets prepared in example 1;
fig. 2 shows a schematic view of the solar cell device structure of embodiment 4 of the present application, wherein a transparent conductive substrate 1, a hole blocking layer 2, a perovskite layer 3, an interface modification layer 4, a hole transport layer 5 and an electrode layer 6;
fig. 3 shows a schematic view of the solar cell device structure of embodiment 5 of the present application, in which a transparent conductive substrate 1, an electron blocking layer 2, a perovskite layer 3, an interface modification layer 4, an electron transport layer 5, a buffer layer 6, and an electrode layer 7 are provided.
Detailed Description
The existing perovskite solar cell has higher photoelectric conversion efficiency, but long-term stability and potential lead ion leakage are important factors for restricting commercialization. The application provides a novel ultrathin BiOX ultrathin nanosheet material which is used as an interface modification layer of a perovskite solar cell.
The ultrathin BiOX nanomaterial BiOX provided by the application is formed into a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm. By controlling the size of the nanoplatelets within the range, the thin film interface modification layer prepared from the bisox nanomaterial can be applied to perovskite solar cells.
The BiOX nanomaterial is prepared by first reacting sodium oleate with Bi (NO 3 ) 3 ·5H 2 O and KX (X= F, cl, br, I) react to generate multi-layer blocky BiOX, and then the multi-layer blocky BiOX is ultrasonically cleaned with tetrabutylammonium tetrafluoroborate to obtain an ultrathin BiOX nano-sheet, which comprises the following steps:
adding sodium oleate into deionized water, and stirring for 0.5-2 h to obtain a uniformly mixed solution (1);
bi (NO) 3 ) 3 ·5H 2 Adding O into the solution (1) and stirring for 1-3 h to obtain a uniformly mixed solution (2);
adding KX (X= F, cl, br, I) into the solution (2) and stirring for 0.5-3 h to obtain a uniformly mixed solution (3);
carrying out hydrothermal reaction on the obtained solution (3) at 120-200 ℃ for 0.5-2 d, and then washing and drying to obtain a product;
dispersing the obtained product in an ethanol solution of tetrabutylammonium tetrafluoroborate, carrying out ultrasonic treatment for 0.5-3 h, and then washing and drying to obtain the final product.
Specifically, sodium oleate is first reacted with Bi (NO 3 ) 3 ·5H 2 O is stirred for 0.5 to 2 hours, preferably the reaction can be carried out under vigorous stirring conditions, and a white suspension (1) is obtained after the reaction, more specifically, 20mg of sodium oleate is added to 30mL of deionized water and stirred vigorously for 1 hour. KX was then added to the solution (1) and stirred for 1 to 3 hours to give a uniformly mixed solution (2), and more specifically, 30mg of KX was added to the solution (1) and stirred vigorously for 1 hour. Then carrying out hydrothermal reaction on the obtained solution, specifically, putting the solution into a reaction kettle, carrying out hydrothermal reaction for 0.5-2 d at 120-200 ℃, obtaining a product after the step, and then washing and drying the obtained product, preferably washing the product with deionized water and absolute ethyl alcohol for 1-3 times respectively, and then placing the product in a drying box for drying, thus obtaining the BiOX powder. Finally, dispersing the powder in an ethanol solution of tetrabutylammonium tetrafluoroborate, and carrying out ultrasonic treatment for 0.5-3 h to obtain a transparent orange BiOX solution.
The ultrathin BiOX nanomaterial can be used for preparing a novel BiOX film, and the film electrode comprises the BiOX nanomaterial and is applied to a perovskite solar cell as an interface modification layer. Preferably, the thickness of the BiOX interface modification layer is 3-100 nm, preferably 10-15 nm. The thickness of the interface modification layer is controlled within the range, so that effective extraction of charges in the device can be ensured. Due to the dipole effect of the BiOX, the interface modification layer increases the built-in electric field of the perovskite solar cell, so that the open-circuit voltage of the device is improved. Secondly, due to the hydrophobic property of the exposed surface of BiOX (001), the BiOX is applied to the perovskite solar cell, and the perovskite solar cell is stable for a long time. Therefore, the novel ultrathin BiOX nanomaterial is used as an interface modification layer to be applied to the perovskite solar cell, so that the perovskite solar cell can be efficiently and stably obtained.
According to some embodiments of the application, the bisox interface modification layer may be prepared by dispersing a bisox nanomaterial in an organic solvent to obtain a dispersion, and forming the dispersion into a thin film by spray coating or spin coating. Preferably, the dispersion may be formed using one or more organic solvents selected from chlorobenzene, isopropanol or ethanol. The preparation method of the interface modification layer has simple process, does not need expensive equipment and complex conditions, is convenient for assembling devices, and is beneficial to the commercial production of perovskite solar cells.
Some embodiments of the present application provide a solar cell using an interface modification layer of an ultrathin bisox nanomaterial, the structure of the solar cell comprising, from bottom to top: the structure comprises a transparent conductive substrate, a hole blocking layer, a perovskite layer, an interface modification layer, a hole transport layer and an electrode layer, wherein the interface modification layer is a film layer containing BiOX nano materials.
Preferably, the perovskite light absorbing material is ABX 3 ，A＝CH 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; x= I, br, cl, CN, SCN or mixtures thereof.
Preferably, the transparent conductive substrate is FTO conductive glass or ITO conductive glass.
Preferably, the hole blocking layer is dense TiO 2 A layer, more preferably, the dense TiO 2 The thickness of the layer is 40-100 nm.
Preferably, the thickness of the perovskite layer is 300-500 nm.
Preferably, the interface modifying layer is a thin layer of BiOX, more preferably the interface modifying layer has a thickness of 10 to 15nm.
Preferably, the hole blocking layer is a Spiro-OMeTAD or PTAA, more preferably, the hole transport layer has a thickness of 60 to 100nm.
Preferably, the electrode layer is Au or Ag, more preferably, the electrode layer has a thickness of 60 to 100nm.
The solar cell containing the BiOX ultrathin nanosheet interface modification layer can be prepared by the following method:
preparing a transparent conductive substrate;
forming a hole blocking layer on the transparent conductive substrate;
forming a perovskite layer on the hole blocking layer;
forming an interface modification layer on the perovskite layer;
forming a hole transport layer on the interface modification layer; and
an electrode layer is formed on the hole transport layer,
wherein the interface modification layer is a thin film layer of BiOX nanomaterial, and the nanomaterial comprises a nanosheet which is formed by BiOX and has a thickness of 5-200 nm and a thickness of 1-20 nm.
More specifically, the preparing of the transparent conductive substrate may be a step of cleaning the transparent conductive substrate. For example, the FTO or ITO conductive glass substrate may be washed in an ultrasonic washer, and more preferably, may be washed with a weak alkaline liquid detergent having ph=8 to 10, deionized water, absolute ethanol, acetone, respectively, for 5 to 20 minutes in sequence. The cleaning of the transparent conductive substrate may be performed using other methods that may be used in the art.
The step of forming the hole blocking layer on the transparent conductive substrate may be performed by spraying a solution of an organic titanium source, such as isopropyl titanate, more specifically, for example, a cleaned FTO, on the transparent conductive substrate and heatingHeating the electric glass substrate at 400-600 ℃, spraying 0.01-0.05 mol/L isopropyl titanate isopropanol solution on the substrate, heating for 20-60 minutes, and forming compact TiO with the thickness of 40-100 nm 2 A hole blocking layer.
The perovskite layer, preferably perovskite material, may be ABX as previously described 3 Wherein a=ch 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; x= I, br, cl, CN, SCN or mixtures thereof. More specifically, 1.0-1.5 mol/L perovskite solution is deposited on a substrate through a one-step or two-step spin coating method, and is heated for 0.5-1 h at 100-150 ℃ to form a perovskite active layer with the thickness of 200-1000 nm;
and the interface modification layer is prepared by spin coating or spray coating the BiOX dispersion liquid on the perovskite layer, and heating for 10-70 minutes at the temperature of 40-200 ℃ to obtain the BiOX interface modification layer. As described above, the bisox dispersion may be obtained by dispersing the bisox nanomaterial of the present application in an organic solvent. Preferably, the dispersion may be formed using one or more organic solvents selected from chlorobenzene, isopropanol or ethanol.
The hole transport layer may be heated and performed by spin coating on the interface modification layer by dissolving the Spiro-ome tad or PTAA in chlorobenzene or toluene solvent. More specifically, a solution of Spiro-OMeTAD or PTAA in chlorobenzene with the concentration of 80mg/mL is spin-coated on the interface modification layer, and heated for 10-60 minutes at 50-100 ℃ to form a Spiro-OMeTAD or PTAA hole transport layer with the thickness of 40-200 nm.
The electrode layer may be formed by vapor deposition of Au or Ag on the hole transport layer by a vacuum plating method. More specifically, the thickness of the electrode is controlled by controlling the speed of evaporation and the evaporation time of Au or Ag, thereby forming an electrode layer with a thickness of 40-200 nm.
Further embodiments of the present application provide a solar cell using the BiOX interface modification layer, wherein the structure of the solar cell comprises, from bottom to top: the device comprises a transparent conductive substrate, an electron blocking layer, a perovskite layer, an interface modification layer, an electron transport layer, a buffer layer and an electrode layer.
Among them, the transparent conductive substrate, the electron blocking layer, the perovskite layer, the interface modification layer, and the electrode layer, the preparation of which have been described in detail above, are omitted herein.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1: preparation of BiOI nanomaterial
The bisi powder was prepared as follows:
(1) 30mg of sodium oleate was added to 40mL of deionized water and stirred vigorously at room temperature for 1h.
(2) 35mg of KI was added to the above solution, and the mixture was vigorously stirred at room temperature for 2 hours.
(3) And (3) filling the solution into a reaction kettle, and carrying out hydrothermal reaction for 4 hours at 150 ℃ to obtain a brick red product.
(4) And (3) washing the brick red product with cyclohexane and absolute ethyl alcohol for 3 times to obtain brick red powder.
(5) Dispersing the brick red product in a concentration of 2mg mL -1 In ethanol of tetrabutylammonium tetrafluoroborate, and performing ultrasonic treatment for 10min to obtain a pale yellow solution.
(6) The pale yellow products are respectively washed with absolute ethyl alcohol and deionized water for 3 times to obtain pale yellow powder, and the pale yellow powder is dispersed in chlorobenzene which is an organic solvent for atomic force microscopy testing, as shown in figure 1.
Example 2: preparation of BiOBr nanomaterial
The BiOBr powder was prepared as follows:
(1) 25mg of sodium oleate was added to 40mL of deionized water and stirred vigorously at room temperature for 1h.
(2) To the above solution, 30mg of KBr was added and stirred vigorously at room temperature for 2 hours.
(3) The solution is put into a reaction kettle and subjected to hydrothermal reaction for 3 hours at 170 ℃ to obtain a white product.
(4) The white product was washed with cyclohexane and absolute ethanol 3 times to obtain white powder, respectively.
(5) Dispersing the white product in a concentration of 8mg mL -1 In ethanol of tetrabutylammonium tetrafluoroborate, and performing ultrasonic treatment for 30min to obtain a white solution.
(6) The white products are respectively washed by absolute ethyl alcohol and deionized water for 5 times to obtain white powder.
Example 3: preparation of BiOCl nanomaterial
The BiOCl powder was prepared as follows:
(1) 60mg of sodium oleate was added to 50mL of deionized water and stirred vigorously at room temperature for 2h.
(2) 45mg of KCl was added to the above solution, and the mixture was vigorously stirred at room temperature for 1 hour.
(3) The solution is put into a reaction kettle and subjected to hydrothermal reaction for 2 hours at 160 ℃ to obtain a white product.
(4) The white product was washed with cyclohexane and absolute ethanol for 4 times to obtain white powder.
(5) Dispersing the white product in a concentration of 10mg mL -1 In ethanol of tetrabutylammonium tetrafluoroborate, and performing ultrasonic treatment for 40min to obtain a white solution.
(6) The white products are respectively washed by absolute ethyl alcohol and deionized water for 5 times to obtain white powder.
Example 4: preparation of perovskite solar cell SC-1
The perovskite solar cell SC-1 of the device structure shown in FIG. 2 is prepared by the following steps, and comprises a transparent conductive substrate, a hole blocking layer, a perovskite layer, an interface modification layer, a hole transport layer and an electrode layer which are sequentially distributed from bottom to top:
(1) Placing the FTO conductive glass substrate in an ultrasonic cleaner, and cleaning the FTO conductive glass substrate for 5 minutes by using a pH=8 weakly alkaline liquid detergent, deionized water, absolute ethyl alcohol and acetone in sequence;
(2) Hole blocking layer preparation: heating the cleaned FTO conductive glass substrate at 500 ℃, spraying the prepared isopropyl titanate isopropyl alcohol solution with the concentration of 0.05mol/L on the substrate, and heating for 20 minutes to form compact TiO with the concentration of about 60nm 2 A hole blocking layer;
(3) Perovskite layer preparation: measuring 50uL of prepared perovskite solution drop on the hole blocking layer, rotating for 30s at the rotation speed of 5000rpm/s, dripping anti-solvent chlorobenzene at the time of the 5 th s, heating at 100 ℃ for 40 minutes, and volatilizing the perovskite material solvent to obtain a perovskite active layer;
(4) Preparing an interface modification layer: spin-coating the prepared isopropanol solution of the BiOI with the concentration of 5mg/mL on the hole transport layer, and heating the hole transport layer on a heating table with the temperature of 100 ℃ for 10min to obtain an interface modification layer with the concentration of 10 nm;
(5) Preparing a hole layer: spin-coating 80mg/mL of prepared Spiro-OMeTAD chlorobenzene solution on the perovskite active layer, and heating on a heating table at 100 ℃ for 10min to obtain a hole layer of 80 nm;
(6) Electrode layer preparation: and (3) placing the half cell prepared in the steps (1) - (5) in an evaporator, and obtaining an Au electrode layer with the thickness of 100nm by adjusting the evaporation rate, thereby finally preparing the perovskite solar cell SC-1.
Example 5: preparation of perovskite solar cell SC-2
The perovskite solar cell SC-2 with the device structure shown in FIG. 3 is prepared according to the following steps: transparent conductive substrate, electron blocking layer, perovskite layer, interface modification layer, electron transport layer, buffer layer and electrode layer:
(1) Cleaning: placing the FTO transparent conductive glass substrate in an ultrasonic cleaner, and cleaning the FTO transparent conductive glass substrate for 10 minutes by sequentially using a pH=10 weakly alkaline liquid detergent, deionized water, absolute ethyl alcohol and acetone;
(2) Preparation of an electron blocking layer: heating the cleaned FTO conductive glass substrate at 500 ℃, spraying the prepared acetonitrile solution of 4mg/mL of nickel acetylacetonate on the substrate, and heating for 20min to form a compact NiO electron blocking layer of about 30 nm;
(3) Perovskite active layer preparation: spin-coating 100 mu L of perovskite solution on the compact NiO electron blocking layer, and heating on a heating table at 100 ℃ for 60min to obtain a 500nm perovskite active layer;
(4) Preparing an interface modification layer: spin-coating the prepared isopropanol solution of 5mg/mL BiOBr on the hole transport layer, and heating on a heating table at 100 ℃ for 10min to obtain a 10nm interface modification layer;
(5) And (3) preparing an electron transport layer: spin-coating the prepared 20mg/mL PCBM chlorobenzene solution on the perovskite active layer, and heating on a heating table at 100 ℃ for 10min to obtain a 60nm electron transport layer;
(6) Preparing a buffer layer: spin-coating the saturated solution of the prepared BCP on the electron transport layer, and heating on a heating table at 70 ℃ for 10min to obtain a 20nm buffer layer;
(7) Electrode layer preparation: and (3) placing the half cell prepared in the steps (1) - (6) in an evaporator, and obtaining an Ag electrode layer with the thickness of 100nm by adjusting the evaporation rate to obtain the perovskite solar cell SC-2.
SC-1 is placed under a standard sunlight simulator for testing, the scanning voltage range is-0.1-1.1V, and the scanning speed is 50mv/s. Through test, the perovskite solar cell SC-1 has an open circuit voltage V oc Short-circuit current density J of 1.14V sc Is 23.51mA cm -2 The fill factor FF was 0.79 and the photoelectric conversion efficiency was 21.16%. Open circuit voltage V of SC-1 compared with open circuit voltage of 1.10V of perovskite solar cell without BiOI interface modification oc Higher. Meanwhile, the SC-1 is aged for 500 hours under the condition that the humidity is 85%, the device can still maintain 92% of the initial temperature, and the reference device is aged under the same condition, the performance of the device is attenuated to 60% of the initial value, so that the SC-1 has better long-term stability.
The foregoing description is directed to the preferred embodiments of the present application, but the embodiments are not intended to limit the scope of the application, and all equivalent changes or modifications made under the technical spirit of the present application should be construed to fall within the scope of the present application.
Claims (7)
1. A preparation method of an ultrathin BiOX nanomaterial, X is one of F, cl, br, I, is characterized in that: the preparation method of the ultrathin BiOX nanomaterial comprises the following steps:
adding sodium oleate into deionized water, and stirring for 0.5-2 hours to obtain a uniformly mixed solution;
bi (NO) 3 ) 3 ·5H 2 Adding O into the solution, and stirring for 1-3 h to obtain a uniformly mixed solution;
adding KX into the solution, and stirring for 0.5-3 h to obtain a uniformly mixed solution;
carrying out hydrothermal reaction on the obtained solution at 120-200 ℃ for 0.5-2 d, and then washing and drying to obtain a product;
placing the obtained product into an ethanol solution of tetrabutylammonium tetrafluoroborate, and cleaning and drying after ultrasonic treatment for 0.5-3 hours;
the BiOX nanomaterial is a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm.
2. A solar cell, characterized in that: the structure of the solar cell comprises the following components from bottom to top: the transparent conductive substrate, the electron blocking layer, the perovskite layer, the interface modification layer, the electron transport layer, the buffer layer and the electrode layer, wherein the interface modification layer is a film layer of a BiOX nano material, the BiOX nano material is a nano sheet with the diameter of 5-200 nm and the thickness of 1-20 nm, and X is one of F, cl, br, I.
3. The solar cell of claim 2, wherein: the perovskite layer is made of ABY 3 ，A=CH 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; y= I, br, cl, CN, SCN or mixtures thereof.
4. A method of manufacturing a solar cell as claimed in claim 3, characterized in that: the method comprises the following steps: preparing a transparent conductive substrate;
forming an electron blocking layer on the transparent conductive substrate;
forming a perovskite layer on the electron blocking layer;
forming an interface modification layer on the perovskite layer;
forming an electron transport layer on the interface modification layer;
forming a buffer layer on the electron transport layer;
forming an electrode layer on the buffer layer;
the interface modification layer is a film layer of a BiOX nanomaterial, and the BiOX nanomaterial is a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm.
5. A solar cell, characterized in that: the structure of the solar cell comprises the following components from bottom to top: the structure comprises a transparent conductive substrate, a hole blocking layer, a perovskite layer, an interface modification layer, a hole transport layer and an electrode layer, wherein the interface modification layer is a thin film layer of a BiOX nano material, the BiOX nano material is a nano sheet with a diameter of 5-200 nm and a thickness of 1-20 nm, and X is one of F, cl, br, I.
6. The solar cell of claim 5, wherein: the perovskite layer is formed by ABY 3 Material formation, a=ch 3 NH 3 、NH 2 CHNH 2 Cs or mixtures thereof; b=pb or Sn or mixtures thereof; y= I, br, cl, CN, SCN or mixtures thereof.
7. A method of manufacturing a solar cell as claimed in claim 6, characterized in that: the method comprises the following steps: preparing a transparent conductive substrate;
forming a hole blocking layer on the transparent conductive substrate;
forming a perovskite layer on the hole blocking layer;
forming an interface modification layer on the perovskite layer;
forming a hole transport layer on the interface modification layer; and
forming an electrode layer on the hole transport layer;
the interface modification layer is a film layer of a BiOX nanomaterial, and the BiOX nanomaterial is a nanosheet with a diameter of 5-200 nm and a thickness of 1-20 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211202511.2A CN115432736B (en) | 2022-09-29 | 2022-09-29 | Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211202511.2A CN115432736B (en) | 2022-09-29 | 2022-09-29 | Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115432736A CN115432736A (en) | 2022-12-06 |
| CN115432736B true CN115432736B (en) | 2023-09-19 |
Family
ID=84250279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211202511.2A Active CN115432736B (en) | 2022-09-29 | 2022-09-29 | Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115432736B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708424A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Preparation method of {001} crystal surface-exposed BioBr square nanosheet |
| CN104124295A (en) * | 2014-08-12 | 2014-10-29 | 中国乐凯集团有限公司 | Planar heterogeneous perovskite solar cell and preparation method thereof |
| CN105428438A (en) * | 2015-05-18 | 2016-03-23 | 北京科技大学 | Efficient perovskite solar cell and preparation method thereof |
| CN106492849A (en) * | 2016-11-03 | 2017-03-15 | 江苏大学 | A kind of preparation method of BiOCl ultrathin nanometers piece photochemical catalyst |
| CN108232016A (en) * | 2018-01-18 | 2018-06-29 | 南京邮电大学 | Perovskite solar cell based on cellulose modifying hole transmission layer |
| CN110227503A (en) * | 2019-06-11 | 2019-09-13 | 杭州电子科技大学 | A kind of method of one step of room temperature preparation halogenation oxygen bismuth nanometer sheet |
| KR20200040954A (en) * | 2018-10-10 | 2020-04-21 | 재단법인대구경북과학기술원 | Perovskite solar cell comprising surface-treated electron transport layer and method of manufacturing the same |
| CN111223993A (en) * | 2020-01-13 | 2020-06-02 | 太原理工大学 | Semitransparent perovskite solar cell with high open-circuit voltage |
| CN112786790A (en) * | 2021-01-11 | 2021-05-11 | 华中科技大学 | Perovskite solar cell, interface modification layer thereof and preparation method of modification layer |
| CN113097392A (en) * | 2021-03-31 | 2021-07-09 | 合肥工业大学 | Grain boundary passivation method of perovskite solar cell |
| CN113410390A (en) * | 2021-06-16 | 2021-09-17 | 合肥工业大学 | perovskite/PERC two-end laminated cell and preparation method thereof |
| CN113401940A (en) * | 2021-06-21 | 2021-09-17 | 山东大学 | Oxygen vacancy-rich bismuth oxybromide ultrathin nanosheet photochromic material and preparation method and application thereof |
| CN113497189A (en) * | 2020-04-02 | 2021-10-12 | 深圳先进技术研究院 | Perovskite solar cell with super-hydrophobic packaging layer and preparation method thereof |
| CN114605997A (en) * | 2022-04-26 | 2022-06-10 | 中国计量大学 | All-inorganic perovskite CsPbBr3Preparation method of/BiOBr composite green light fluorescent powder |
-
2022
- 2022-09-29 CN CN202211202511.2A patent/CN115432736B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708424A (en) * | 2013-12-18 | 2014-04-09 | 江苏大学 | Preparation method of {001} crystal surface-exposed BioBr square nanosheet |
| CN104124295A (en) * | 2014-08-12 | 2014-10-29 | 中国乐凯集团有限公司 | Planar heterogeneous perovskite solar cell and preparation method thereof |
| CN105428438A (en) * | 2015-05-18 | 2016-03-23 | 北京科技大学 | Efficient perovskite solar cell and preparation method thereof |
| CN106492849A (en) * | 2016-11-03 | 2017-03-15 | 江苏大学 | A kind of preparation method of BiOCl ultrathin nanometers piece photochemical catalyst |
| CN108232016A (en) * | 2018-01-18 | 2018-06-29 | 南京邮电大学 | Perovskite solar cell based on cellulose modifying hole transmission layer |
| KR20200040954A (en) * | 2018-10-10 | 2020-04-21 | 재단법인대구경북과학기술원 | Perovskite solar cell comprising surface-treated electron transport layer and method of manufacturing the same |
| CN110227503A (en) * | 2019-06-11 | 2019-09-13 | 杭州电子科技大学 | A kind of method of one step of room temperature preparation halogenation oxygen bismuth nanometer sheet |
| CN111223993A (en) * | 2020-01-13 | 2020-06-02 | 太原理工大学 | Semitransparent perovskite solar cell with high open-circuit voltage |
| CN113497189A (en) * | 2020-04-02 | 2021-10-12 | 深圳先进技术研究院 | Perovskite solar cell with super-hydrophobic packaging layer and preparation method thereof |
| CN112786790A (en) * | 2021-01-11 | 2021-05-11 | 华中科技大学 | Perovskite solar cell, interface modification layer thereof and preparation method of modification layer |
| CN113097392A (en) * | 2021-03-31 | 2021-07-09 | 合肥工业大学 | Grain boundary passivation method of perovskite solar cell |
| CN113410390A (en) * | 2021-06-16 | 2021-09-17 | 合肥工业大学 | perovskite/PERC two-end laminated cell and preparation method thereof |
| CN113401940A (en) * | 2021-06-21 | 2021-09-17 | 山东大学 | Oxygen vacancy-rich bismuth oxybromide ultrathin nanosheet photochromic material and preparation method and application thereof |
| CN114605997A (en) * | 2022-04-26 | 2022-06-10 | 中国计量大学 | All-inorganic perovskite CsPbBr3Preparation method of/BiOBr composite green light fluorescent powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115432736A (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gonzalez-Valls et al. | Vertically-aligned nanostructures of ZnO for excitonic solar cells: a review | |
| CN109545970B (en) | Method for improving efficiency and stability of perovskite solar cell and perovskite solar cell | |
| CN109216557B (en) | Based on citric acid/SnO2Perovskite solar cell of electron transport layer and preparation method thereof | |
| CN108054282A (en) | Zinc doping nickel oxide nanoparticle hole transmission layer inverts perovskite solar cell and preparation method | |
| CN108063186A (en) | Zinc doping nickel oxide hole transmission layer inverts perovskite solar cell and preparation method | |
| CN109698251A (en) | A kind of solar battery and preparation method thereof that ferroelectricity is enhanced | |
| CN109065725A (en) | A method of the perovskite solar battery that surfactant prepares efficient stable being added in calcium titanium ore bed | |
| CN109065724B (en) | Mo-titanium dioxide-AgNWs flexible perovskite solar cell and preparation method thereof | |
| CN110085746A (en) | Electron transfer layer and its preparation method and application | |
| Niu et al. | Enhancing the performance of perovskite solar cells via interface modification | |
| CN111244289B (en) | Preparation method of organic photovoltaic device with ZnO film as interface layer | |
| CN107799655B (en) | Perovskite thin film, solar cell device and preparation method | |
| CN115432736B (en) | Ultrathin BiOX nano material, solar cell containing ultrathin BiOX nano material and preparation method of ultrathin BiOX nano material | |
| CN109354057A (en) | A kind of stannum oxide nano-crystal and preparation method thereof and preparation method of solar battery | |
| EP2600365A2 (en) | Dye-sensitized solar cell and method for forming light-scattering layer thereof | |
| CN108574044B (en) | Based on Nb (OH)5Full room temperature perovskite solar cell and preparation method thereof | |
| CN109830604A (en) | A kind of perovskite photovoltaic cell and preparation method thereof with polyethylene oxide thin film passivation electron transfer layer and photosensitive interface layer | |
| CN115915796A (en) | Multifunctional Lewis base molecule modified high-stability perovskite solar cell | |
| CN109449292A (en) | A kind of ferroelectricity of composite laminate-organic hybrid solar battery and preparation method thereof | |
| CN112909175B (en) | Perovskite solar cell based on non-halogen lead source and preparation method thereof | |
| CN115347120A (en) | Perovskite quantum dot solar cell and preparation method thereof | |
| CN103346264A (en) | Nano-zinc oxide film preparation method and organic solar cell preparation method | |
| CN113497189A (en) | Perovskite solar cell with super-hydrophobic packaging layer and preparation method thereof | |
| CN110391337A (en) | A kind of alkali metal hydroxide interface-modifying layer and its application in perovskite solar battery | |
| CN117042472A (en) | Preparation method of ultrathin ferroelectric material and perovskite solar cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |