KR101787083B1 - Preparation method of perovskite nanostructures and the perovskite nanostructures thereby - Google Patents

Preparation method of perovskite nanostructures and the perovskite nanostructures thereby Download PDF

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KR101787083B1
KR101787083B1 KR1020150154077A KR20150154077A KR101787083B1 KR 101787083 B1 KR101787083 B1 KR 101787083B1 KR 1020150154077 A KR1020150154077 A KR 1020150154077A KR 20150154077 A KR20150154077 A KR 20150154077A KR 101787083 B1 KR101787083 B1 KR 101787083B1
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perovskite
metal halide
thin film
nanostructure
formula
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김세윤
김대환
성시준
김강필
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재단법인대구경북과학기술원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
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Abstract

The present invention relates to a method for producing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted to a relative humidity of 0% to 50% (Step 1); And a step (step 2) of immersing the metal halide thin film prepared in step 1 in a solution containing the compound of formula (1) to form a perovskite nanostructure (step 2). to provide. The method for producing a perovskite nanostructure according to the present invention can produce a perovskite nanostructure having a uniform structure and excellent crystallinity as well as a precursor film having a dense structure by using a metal halide powder. In addition, a perovskite nanostructure can be formed based on a dense metal halide thin film prepared by adjusting the relative humidity. Furthermore, a solution for forming a perovskite phase at a high concentration is immersed in a metal halide thin film to form a perovskite seed, and then a solution for forming a perovskite phase at a low concentration is immersed to form a perovskite nanostructure The perovskite nanowire having excellent crystallinity can be produced.

Description

[0001] The present invention relates to a perovskite nanostructure and a perovskite nanostructures,

The present invention relates to a process for producing a perovskite nanostructure and a perovskite nanostructure produced thereby.

In the 21st century, as global environmental problems become a global concern, the importance of eco-friendly energy saving technologies in various information electronics and energy technologies that utilize semiconductor devices, from TVs, mobile phones, computers to solar cells, It is growing day by day. Solution-type printing process technology, which is low cost printing or coating instead of expensive vacuum process technology, is emerging as the main technology of next generation display, lighting and solar cell manufacturing.

Along with this, these semiconductor materials themselves have been diversified into conventional ultra high purity inorganic materials such as Si and GaAs, as well as in the form of conjugated organic semiconductor materials, organic metal materials, and organic hybrid materials.

On the other hand, small particles and large surface area materials are important factors for catalysis, ceramic synthesis, and light absorption. Among them, nanostructures have attracted considerable interest because they have recently been shown to exhibit physical and chemical properties. Nanostructured materials effectively increase the surface area of catalysis and electrode action, thereby increasing catalytic activity for oxidation and electrode performance. Materials made of nanostructures also have advantages in application by lowering the sintering temperature.

At this time, the perovskite is mainly manufactured in a thin film form and is being applied, and a method and a method of manufacturing the perovskite nanostructure have been studied, but it is difficult to confirm the remarkable result of the research, There is no example of applying a perovskite nanostructure to other fields.

As an example of a method of synthesizing a perovskite nanostructure, Jun Xing et al. Have disclosed a method of synthesizing a perovskite nanowire through a two-step vacuum process (Nano Lett., 2015, 15, 7 , 4571).

The inventors of the present invention studied a method for synthesizing and controlling the perovskite nanostructure, and a metal halide thin film was prepared by applying a mixed solution containing a metal halide powder, The present inventors have developed a method for preparing a perovskite nanostructure by immersing the metal halide thin film prepared above in a solution in which an atom or a molecule having a perovskite phase is dissolved, thereby completing the present invention.

It is an object of the present invention to synthesize, control, and identify mechanisms of perovskite nanostructures.

It is another object of the present invention to synthesize a perovskite nanostructure and apply it to an electronic device.

In order to achieve the above object,

(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%; And

A step of immersing the metal halide thin film prepared in step 1 in a solution containing a compound of formula 1 to form a perovskite nanostructure (step 2); to provide.

≪ Formula 1 >

A n X m

(In the formula 1,

A is C 1-20 straight or branched alkyl substituted with an amine group,

X is a halogen ion,

Wherein n is 1 or 2,

And m is 1 to 4.)

In addition,

(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%;

Immersing the metal halide thin film prepared in the step 1 in a solution of 0.3 M to 0.5 M containing the compound of the formula (1) to form a perovskite seed (step 2); And

(Step 2) comprising immersing the metal halide thin film in which the perovskite seed has been formed in a solution containing the compound of formula (1) to form a perovskite nanowire (step 2) A method of manufacturing a structure is provided.

Further,

An electronic device including the perovskite nanostructure produced by the above-described method is provided.

The method for producing a perovskite nanostructure according to the present invention can produce a perovskite nanostructure having a uniform structure and excellent crystallinity as well as a precursor film having a dense structure by using a metal halide powder. In addition, a perovskite nanostructure can be formed based on a dense metal halide thin film prepared by adjusting the relative humidity.

Furthermore, a solution for forming a perovskite phase at a high concentration is immersed in a metal halide thin film to form a perovskite seed, and then a solution for forming a perovskite phase at a low concentration is immersed to form a perovskite nanostructure The perovskite nanowire having excellent crystallinity can be produced.

FIG. 1 is a photograph of a metal halide thin film prepared in the step 1 of Example 2, Example 3, Comparative Example 1, and Comparative Example 2, observed with a scanning electron microscope;
FIGS. 2 to 4 are photographs of the perovskite nanostructures prepared in Examples 1 to 5 according to the present invention by scanning electron microscopy. FIG.

The present invention

(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%; And

A step of immersing the metal halide thin film prepared in step 1 in a solution containing a compound of formula 1 to form a perovskite nanostructure (step 2); to provide.

≪ Formula 1 >

A n X m

(In the formula 1,

A is C 1-20 straight or branched alkyl substituted with an amine group,

X is a halogen ion,

Wherein n is 1 or 2,

And m is 1 to 4.)

Hereinafter, the method for producing the perovskite nanostructure according to the present invention will be described in detail for each step.

First, in the method for producing a perovskite nanostructure according to the present invention, step 1 is performed by applying a mixed solution containing a metal halide powder in an atmosphere adjusted to a relative humidity of 0% to 50% Is a step for producing a thin film.

The above step 1 is a step for preparing a metal halide thin film using a metal halide powder and preparing a metal halide thin film in an atmosphere adjusted to a relative humidity of 0% to 50% in a previous step for preparing a perovskite nanostructure to be.

Specifically, the metal halide powder of step 1 may be a powdery compound consisting of a compound of MX n (n = 1 to 3), where M may be any one of 2 to 5 period transition metal elements, X may be any one of a 3 to 5-cycle halogen group element.

As a specific example, a metal halide powder in the step 1 is iodide, lead (PbI 2), bromide, lead (PbBr, PbBr 2), chloride, lead (PbCl, PbCl 2), iodide, tin (SnI 2), bromide, tin (SnBr, SnBr 2), tin chloride (SnCl, SnCl 2), copper iodide (CuI, CuI 2), copper bromide (CuBr, CuBr 2), copper chloride (CuCl 2, CuCl), iodide, manganese (MnI, MnI 2), bromide, manganese It can be used (MnBr, MnBr 2) and manganese chloride (MnCl, MnCl 2) and the like.

In addition to the use of the metal halide compound in the step 1, particularly in the form of powder, a perovskite nanostructure excellent in uniformity and crystallinity can be produced along with the production of a dense precursor film.

In addition, the step 1 is performed in an atmosphere controlled at a relative humidity of 0% to 50%, preferably in an atmosphere adjusted at a relative humidity of 0% to 30%, more preferably, The humidity may be performed in an atmosphere adjusted to 0% to 20%, and most preferably, the atmosphere may be adjusted to 0% to 10% relative humidity. When preparing the metal halide thin film in the step 1, the morphology of the metal halide thin film produced by controlling the relative humidity can be controlled. In particular, it is preferable to form a metal halide thin film having a dense structure in order to form a perovskite nanostructure excellent in crystallinity.

Further, it is preferable that the metal halide thin film is further subjected to a low-temperature heat treatment after the step 1. The low-temperature heat treatment may be performed at a temperature of 50 ° C to 150 ° C, at a temperature of 75 ° C to 125 ° C, or at a temperature of 90 ° C to 110 ° C. The metal halide thin film produced in the step 1 can be heat treated at a low temperature to form a dense structure of the metal halide thin film.

In addition, the mixed solution of step 1 may further include an organic solvent, and the organic solvent may be used without limitation as long as it is a solvent capable of dispersing or dissolving the metal halide powder. Specific examples thereof include dimethylformamide (DMF) , Dimethylsulfoxide (DMSO), g-butylolactone (GBL), N-methyl-2-pyrrolidone (NMP) and the like.

Further, the wet coating method of step 1 may be used without limitation, and it may be performed by a method such as spin coating, dip coating, and spray coating as a specific example. However, the application of the step 1 is not limited thereto.

When spin coating is used as the coating method of the step 1, the spin coating may be performed at a rotation speed of 500 rpm to 5,000 rpm, preferably 1,500 rpm to 4,000 rpm, more preferably 2,500 rpm to 3,500 rpm And may be performed for 1 second to 120 seconds, preferably 5 seconds to 60 seconds, but the application method is not limited thereto.

Next, in the method for producing a perovskite nanostructure according to the present invention, Step 2 is a step of immersing the metal halide thin film prepared in Step 1 in a solution containing the compound of Chemical Formula 1 to form a perovskite nanostructure .

In the step 2, a metal halide thin film produced in the step 1 and a solution containing an atom or a molecule having a perovskite phase are used to form a perovskite nanostructure, So that the perovskite nanostructure can be grown.

At this time, the concentration of the solution containing the compound of Formula 1 in Step 2 is preferably 0.001 M to 0.5 M, more preferably 0.038 M to 0.3 M, most preferably 0.038 M to 0.1 M. If the concentration of the solution containing the compound of Chemical Formula 1 in Step 2 is less than 0.001 M, there is a problem that it is difficult to grow the perovskite nanostructure. If the concentration exceeds 0.5 M, the perovskite nano There is a problem that the crystallinity of the structure deteriorates.

In addition, the immersion of the step 2 is preferably performed for 10 minutes to 24 hours, and more preferably for 60 minutes to 720 minutes. If the immersion in the step 2 is performed for less than 10 minutes, there is a problem that it is difficult to grow the perovskite nanostructure. If the immersion is performed for more than 24 hours, the perovskite material is dissolved in the solvent .

Further,

(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%;

Immersing the metal halide thin film prepared in the step 1 in a solution of 0.3 M to 0.5 M containing the compound of the formula (1) to form a perovskite seed (step 2); And

(Step 3) of immersing the metal halide thin film in which the perovskite seed has been formed in the solution containing the compound of formula (1) to form perovskite nanowires in step 2, A method of manufacturing a structure is provided.

≪ Formula 1 >

A n X m

(In the formula 1,

A is C 1-20 straight or branched alkyl substituted with an amine group,

X is a halogen ion,

Wherein n is 1 or 2,

And m is 1 to 4.)

Hereinafter, the method for producing the perovskite nanostructure according to the present invention will be described in detail for each step.

First, in the method for producing a perovskite nanostructure according to the present invention, step 1 is performed by applying a mixed solution containing a metal halide powder in an atmosphere adjusted to a relative humidity of 0% to 50% Is a step for producing a thin film.

The above step 1 is a step for preparing a metal halide thin film using a metal halide powder and preparing a metal halide thin film in an atmosphere adjusted to a relative humidity of 0% to 50% in a previous step for preparing a perovskite nanostructure to be.

Specifically, the metal halide powder of step 1 may be a powdery compound consisting of a compound of MX n (n = 1 to 3), where M may be any one of 2 to 5 period transition metal elements, X may be any one of a 3 to 5-cycle halogen group element.

As a specific example, a metal halide powder in the step 1 is iodide, lead (PbI 2), bromide, lead (PbBr, PbBr 2), chloride, lead (PbCl, PbCl 2), iodide, tin (SnI 2), bromide, tin (SnBr, SnBr 2), tin chloride (SnCl, SnCl 2), copper iodide (CuI, CuI 2), copper bromide (CuBr, CuBr 2), copper chloride (CuCl 2, CuCl), iodide, manganese (MnI, MnI 2), bromide, manganese It can be used (MnBr, MnBr 2) and manganese chloride (MnCl, MnCl 2) and the like.

In addition to the use of the metal halide compound in the step 1, particularly in the form of powder, a perovskite nanostructure excellent in uniformity and crystallinity can be produced along with the production of a dense precursor film.

In addition, the step 1 is performed in an atmosphere controlled at a relative humidity of 0% to 50%, preferably in an atmosphere adjusted at a relative humidity of 0% to 30%, more preferably, The humidity may be performed in an atmosphere adjusted to 0% to 20%, and most preferably, the atmosphere may be adjusted to 0% to 10% relative humidity. When preparing the metal halide thin film in the step 1, the morphology of the metal halide thin film produced by controlling the relative humidity can be controlled. In particular, it is preferable to form a metal halide thin film having a dense structure in order to form a perovskite nanostructure excellent in crystallinity.

Further, it is preferable that the metal halide thin film is further subjected to a low-temperature heat treatment after the step 1. The low-temperature heat treatment may be performed at a temperature of 50 ° C to 150 ° C, at a temperature of 75 ° C to 125 ° C, or at a temperature of 90 ° C to 110 ° C. The metal halide thin film produced in the step 1 can be heat treated at a low temperature to form a dense structure of the metal halide thin film.

In addition, the mixed solution of step 1 may further include an organic solvent, and the organic solvent may be used without limitation as long as it is a solvent capable of dispersing or dissolving the metal halide powder. Specific examples thereof include dimethylformamide (DMF) , Dimethylsulfoxide (DMSO), g-butylolactone (GBL), N-methyl-2-pyrrolidone (NMP) and the like.

Further, the wet coating method of step 1 may be used without limitation, and it may be performed by a method such as spin coating, dip coating, and spray coating as a specific example. However, the application of the step 1 is not limited thereto.

When spin coating is used as the coating method of the step 1, the spin coating may be performed at a rotation speed of 500 rpm to 5,000 rpm, preferably 1,500 rpm to 4,000 rpm, more preferably 2,500 rpm to 3,500 rpm And may be performed for 1 second to 120 seconds, preferably 5 seconds to 60 seconds, but the application method is not limited thereto.

Next, in the method for producing a perovskite nanostructure according to the present invention, Step 2 is a step of immersing the metal halide thin film prepared in Step 1 in a solution of 0.3 M to 0.5 M containing the compound of Formula 1 To form a perovskite seed.

The step 2 is a step of forming a perovskite seed to form a perovskite nanostructure having a good crystallinity in the metal halide thin film produced in the step 1, wherein the metal halide thin film is a perovskite phase Is immersed in a solution containing a high concentration.

At this time, the immersion in step 2 is preferably performed for 1 second to 15 minutes, more preferably 5 seconds to 30 seconds. If the immersion in the step 2 is performed for less than 1 second, it is difficult to form a seed for growing the perovskite nanostructure or there is a problem of uniformity, and if it exceeds 15 minutes, excessive seed formation There is a problem of uniformity of the perovskite nanostructure to be manufactured later.

Next, in the method for producing the perovskite nanostructure according to the present invention, Step 3 is a step of immersing the metal halide thin film formed with perovskite seeds in the solution containing the compound of Formula 1 in Step 2, To form a robust nanowire.

Step 3 is a step of forming a perovskite nanostructure from a perovskite seed by using a solution containing an atom or a molecule having a perovskite seed and a perovskite phase formed on the metal halide thin film , A metal halide thin film formed with a perovskite seed is immersed in a solution to grow a perovskite nanostructure.

At this time, the concentration of the solution containing the compound of Formula 1 in Step 3 is preferably 0.001 M to 0.5 M, more preferably 0.038 M to 0.3 M, most preferably 0.038 M to 0.1 M. If the concentration of the solution containing the compound of Chemical Formula 1 in Step 2 is less than 0.001 M, there is a problem that it is difficult to grow the perovskite nanostructure. If the concentration exceeds 0.5 M, the perovskite nano There is a problem that the crystallinity of the structure deteriorates.

In addition, it is preferable that the immersion of step 3 is performed for 10 minutes to 24 hours, more preferably for 60 minutes to 720 minutes. If the immersion in step 3 is performed for less than 10 minutes, there is a problem that it is difficult to grow the perovskite nanostructure. If the immersion is performed for more than 24 hours, the perovskite material is dissolved in the solvent .

The perovskite nanostructure can be produced in the manner as described above, and in particular, nanowire-shaped perovskite nanostructures can be produced.

Further,

An electronic device including the perovskite nanostructure produced by the above-described method is provided.

The present invention can be applied to an electronic device using a perovskite nanostructure according to the present invention as a gas / light sensor, a field effect transistor (FET), a solar cell, and the like.

Hereinafter, the present invention will be described in detail with reference to the following examples and experimental examples.

It should be noted, however, that the following examples and experimental examples are illustrative of the present invention, but the scope of the invention is not limited by the examples and the experimental examples.

≪ Example 1 > Preparation of perovskite nanostructure 1

Step 1: A 1 M solution of lead iodide (PbI 2 ) was added to a dimethylformamide (DMF) solvent, followed by stirring at 70 ° C for 12 hours to prepare a mixed solution.

Thereafter, the mixed solution was spin-coated for 5 seconds at a rotation rate of 3,000 rpm in a 0% relative humidity atmosphere to prepare a PbI 2 thin film. Then, the PbI 2 thin film was subjected to a low temperature heat treatment at a temperature of 100 ° C for 5 minutes.

Step 2: A solution was prepared by mixing methyl isopropyl myristate (CH 3 NH 3 I, MAI) at a concentration of 0.038 M in isopropyl alcohol (IPA) solvent, and the thin film prepared in step 1 was immersed in the solution for 12 hours To prepare a perovskite nanostructure.

≪ Example 2 > Preparation of perovskite nanostructure 2

A perovskite nanostructure was prepared in the same manner as in Example 1, except that the mixed solution was spin-coated for 10 seconds in the step 1 of Example 1 to prepare a PbI 2 thin film.

≪ Example 3 > Preparation of perovskite nanostructure 3

A perovskite nanostructure was prepared in the same manner as in Example 1, except that the mixed solution was spin-coated for 30 seconds in the step 1 of Example 1 to prepare a PbI 2 thin film.

Example 4 Production of Perovskite Nanostructure 4

The same procedure as in Example 1 was carried out except that in Step 2 of Example 1, a mixed solution of 0.068 M methyl iodide (CH 3 NH 3 I, MAI) in isopropyl alcohol (IPA) solvent was used Perovskite nanostructures were prepared.

≪ Example 5 > Preparation of perovskite nanostructure 5

Step 1: A 1 M solution of lead iodide (PbI 2 ) was added to a dimethylformamide (DMF) solvent, followed by stirring at 70 ° C for 12 hours to prepare a mixed solution.

Thereafter, the mixed solution was spin-coated for 5 seconds at a rotation rate of 3,000 rpm in a 0% relative humidity atmosphere to prepare a PbI 2 thin film. Then, the PbI 2 thin film was subjected to a low temperature heat treatment at a temperature of 100 ° C for 5 minutes.

Step 2: Methyl iodide (CH 3 NH 3 I, MAI) was mixed at 0.3 M concentration in isopropyl alcohol (IPA) solvent to prepare a solution, and the thin film prepared in step 1 was immersed in the solution for 5 seconds To form a perovskite seed.

Step 3: Methyl iodide (CH 3 NH 3 I, MAI) was mixed at 0.038 M concentration in a solvent of isopropyl alcohol (IPA) to prepare a solution. The thin film formed with perovskite seed in step 2 was stirred for 12 hours To prepare a perovskite nanostructure.

≪ Comparative Example 1 &

The perovskite nanostructure was formed in the same manner as in Example 2 except that the step 1 of Example 2 was performed in a 55% relative humidity atmosphere.

At this time, the growth of the perovskite nanostructure was limited in a 55% relative humidity atmosphere.

≪ Comparative Example 2 &

The perovskite nanostructure was formed in the same manner as in Example 3, except that the step 1 of Example 3 was performed in a 55% relative humidity atmosphere.

At this time, the growth of the perovskite nanostructure was limited in a 55% relative humidity atmosphere.

<Experimental Example 1> Scanning electron microscopic observation

In order to confirm the shape of the perovskite nanostructure according to the present invention, the perovskite nanostructures prepared in Examples 1 to 5, Comparative Example 1 and Comparative Example 2 were observed with a scanning electron microscope, Are shown in Figs.

First, the shapes of the PbI 2 thin films prepared in Step 1 of Example 2, Example 3, Comparative Example 1 and Comparative Example 2 were observed with a scanning electron microscope, and the results are shown in FIG.

As shown in FIG. 1, it was confirmed that the PbI 2 thin film produced by the method of the present invention was formed in a very dense structure. On the other hand, it was confirmed that the PbI 2 thin film prepared by adjusting the relative humidity to 55% has high porosity.

In addition, the shape of the perovskite nanostructure produced according to the immersion time in the step 2 of Example 1 and Example 4 was observed with a scanning electron microscope, and the result is shown in FIG.

As shown in FIG. 2, it was confirmed that the perovskite nanostructure grows with time in the methyl iodide ammonium solution, which is a material having a perovskite phase.

Further, the detailed shape of the perovskite nanostructure produced in Example 1 is shown in FIG.

As shown in FIG. 4, the shape in which the perovskite nanostructure is synthesized can be confirmed. First, a perovskite layer is formed on the metal halide thin film. Then, a specific grain of the perovskite is dissolved in the solution A site where an additional reaction takes place is generated. At this time, a reaction occurs on a new site (surface of the metal halide thin film), and a perovskite phase is synthesized. At this time, when a metal halide thin film is subjected to a reaction with a perovskite phase, a volume expansion causes compressive stress on the surrounding grains, and a newly generated grain is subjected to strain / stress, The nanostructure grows. That is, the grain with strain / stress acts as a seed having anisotropy, and mass transfer occurs to the surface of a grain having a high interfacial energy to grow the nanostructure.

The shapes of the perovskite nanostructures prepared in Examples 1 and 5 are shown in FIG.

As shown in FIG. 5, it was confirmed that a perovskite nanostructure superior in crystallinity was formed when the perovskite seed was formed on the metal halide thin film.

Claims (10)

(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%;
Immersing the metal halide thin film prepared in the step 1 in a solution containing the compound of the formula (1) (step 2); And
A step of immersing the metal halide thin film immersed in step 2 in a solution containing a compound of formula 1 to form a perovskite nanowire (step 3);

&Lt; Formula 1 >
A n X m
(In the formula 1,
A is C 1-20 straight or branched alkyl substituted with an amine group,
X is a halogen ion,
Wherein n is 1 or 2,
And m is 1 to 4).
The method according to claim 1,
Metal halide powder in the step 1 is iodide, lead (PbI 2), bromide, lead (PbBr, PbBr 2), chloride, lead (PbCl, PbCl 2), iodide, tin (SnI 2), bromide, tin (SnBr, SnBr 2), chloride Tin (SnCl, SnCl 2 ), copper iodide (CuI, CuI 2 ), copper bromide (CuBr, CuBr 2 ), copper chloride (CuCl 2 , CuCl), manganese iodide (MnI, MnI 2 ), manganese bromide 2 ) and manganese chloride (MnCl, MnCl 2 ). 2. The method for producing a perovskite nanostructure according to claim 1, wherein the perovskite nanostructure is at least one selected from the group consisting of MnCl 2 and MnCl 2 .
The method according to claim 1,
The method of manufacturing a perovskite nanostructure according to claim 1, further comprising the step of subjecting the metal halide thin film to a low temperature heat treatment after the step (1).
The method of claim 3,
Wherein the low-temperature heat treatment is performed at a temperature of 50 ° C to 150 ° C.
The method according to claim 1,
Wherein the mixed solution of step 1 further comprises an organic solvent,
The organic solvent may be at least one selected from the group consisting of dimethylformamide (DMF), dimethylsulfoxide (DMSO), g-butylolactone (GBL) and N-methyl-2-pyrrolidone Of the perovskite nanostructure.
The method according to claim 1,
The application of the step 1 is carried out by one of a method selected from the group consisting of spin coating, dip coating and spray coating. The perovskite nano structure Gt;
The method according to claim 1,
Wherein the concentration of the solution containing the compound of Formula 1 in Step 2 is in the range of 0.001 M to 0.5 M. The method for producing a perovskite nanostructure according to claim 1,
The method according to claim 1,
Wherein the immersion in step 2 is performed for 10 minutes to 24 hours. &Lt; RTI ID = 0.0 &gt; 21. &lt; / RTI &gt;
(Step 1) of preparing a metal halide thin film by applying a mixed solution containing a metal halide powder in an atmosphere adjusted at a relative humidity of 0% to 50%;
Immersing the metal halide thin film prepared in the step 1 in a solution of 0.3 M to 0.5 M containing the compound of the formula (1) to form a perovskite seed (step 2); And
(Step 3) of immersing the metal halide thin film in which the perovskite seed has been formed in the solution containing the compound of formula (1) to form perovskite nanowires in step 2, Method of making the structure:

&Lt; Formula 1 >
A n X m
(In the formula 1,
A is C 1-20 straight or branched alkyl substituted with an amine group,
X is a halogen ion,
Wherein n is 1 or 2,
And m is 1 to 4).
An electronic device comprising a perovskite nanostructure produced by the manufacturing method of claim 1 or 9.
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WO2006085912A2 (en) 2004-06-03 2006-08-17 Stanislaus Wong Large-scale synthesis of perovskite nanostructures
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JP2002080839A (en) 2000-09-08 2002-03-22 Japan Science & Technology Corp Organic ammonium/inorganic laminar perovskite compound and its production method
WO2006085912A2 (en) 2004-06-03 2006-08-17 Stanislaus Wong Large-scale synthesis of perovskite nanostructures
JP2015138822A (en) * 2014-01-21 2015-07-30 国立大学法人京都大学 Manufacturing method of high performance perovskite solar cell

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