KR101134913B1 - A formation method of hybrid organic-inorganic electroluminescence device using reactive ink-jet - Google Patents

Abstract

Disclosed is a method of manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet. Forming a PEDOT / PSS layer on the lower electrode layer according to an embodiment of the present invention; And nano-phosphor holes are injected into the PEDOT / PSS layer by using a thin film formation method in which each ink solution is ejected from two or more ink heads of an inkjet printer to form a film through chemical reaction of two or more ejected ink solutions. Forming a composite fluorescent layer formed in the polymer layer to play a role, by using a reactive inkjet method to form a nano-fluorescence layer directly from the reactive ink sprayed from two or more heads, when manufacturing a reactive ink The nanophosphor and the hole injection layer surrounding the same may be simultaneously formed by including the polymer material which may play a role of hole injection.

Description

A method for manufacturing an organic-inorganic hybrid EL device using a reactive inkjet {A FORMATION METHOD OF HYBRID ORGANIC-INORGANIC ELECTROLUMINESCENCE DEVICE USING REACTIVE INK-JET}

The present invention relates to an organic-inorganic hybrid electroluminescent device, and more particularly, each ink composition ejected from two or more ink heads meet on a substrate, and the nano-phosphor is formed into a desired pattern in the hole injection polymer layer through a chemical reaction. The present invention relates to a method of manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet capable of being formed to improve uniformity of a nano-phosphor.

Organic electroluminescent devices can be classified into low molecular organic electroluminescent devices (OLED) using low molecular materials and high molecular organic electroluminescent devices (PLED) using polymers.

In the case of PLED, printing technology using inkjet is in the spotlight, and development of bubble jet or piezo inkjet technology has been actively performed, and many studies are being made even now. In contrast, low-molecular OLEDs must use vacuum deposition. It is proposed that the laminated structure in PLED is advantageous for improving device stability and efficiency, but it is not easy to manufacture the laminated structure as compared to the low molecular OLED because PLED forms a thin film layer by a wet method. In other words, after coating the primary thin film layer on the substrate, and then dropping the solution of the secondary thin film material on the primary thin film layer, the primary thin film layer is often melted or peeled off by a solvent in which the secondary thin film material is dissolved. Because it can occur.

Although a method of introducing a crosslinked polymer synthesized in the process of manufacturing a PLED having a laminated structure using a general polymer and a copolymer soluble in water or methanol has been studied, these methods are limited to a specific polymer dissolved in a specific solvent. It is difficult to apply to PLED manufacturing process of multi-layer structure. In the case of low molecular OLEDs, high-efficiency light can be obtained at low voltage by forming nanometer-sized layers using an expensive vacuum system, but there are many problems in terms of lifetime and reliability. In contrast, in the case of the organic-inorganic hybrid electroluminescent device, the light emitting layer is composed of inorganic particles or a film, and thus the lifespan and reliability of the light emitting layer are very high.

In the conventional organic-inorganic hybrid electroluminescent device, as shown in FIG. 1, a polymer layer 110 and a light emitting layer, the nanophosphor layer 120 serving as hole transport, are sequentially formed on the PEDOT / PSS layer. The nano phosphor may be formed on the silver polymer layer by using a method such as spin coating.

However, the conventional organic-inorganic hybrid electroluminescent device is formed by the nano-coating particles by using a spin coating, such as agglomeration of the nano-fluorescence particles are generated, which results in inferior uniformity.

An object according to an embodiment of the present invention, which was devised to solve the above problems, is to directly form a nano-fluorescence layer from reactive inks sprayed from two or more heads using a reactive inkjet method, and to inject holes in the manufacture of reactive inks. An organic-inorganic hybrid electroluminescent device manufacturing method using a reactive inkjet capable of simultaneously forming a pattern and a nano phosphor and a hole injection layer surrounding the same by including a polymer material that can play a role is provided.

In addition, another object according to an embodiment of the present invention, it is possible to obtain a nano-fluorescence layer difficult to be molded in a patterned state by the respective ink composition ejected from each of the two or more ink heads meet, the inkjet printing technology According to the more advanced principle of 'drop-on-demand' (hereinafter referred to as DOD) method, the pattern film of the desired material is synthesized in the desired part to solve the problem of the conventional ink, the clogging problem of the nozzle, the disconnection of the pattern, etc. The present invention provides a method for manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet.

In order to achieve the above object, an organic-inorganic hybrid EL device manufacturing method according to an aspect of the present invention comprises the steps of forming a PEDOT / PSS layer on the lower electrode layer; And nano-phosphor holes are injected into the PEDOT / PSS layer by using a thin film formation method in which each ink solution is ejected from two or more ink heads of an inkjet printer to form a film through chemical reaction of two or more ejected ink solutions. Forming a composite fluorescent layer formed in the polymer layer to play a role.

Preferably, the ink solution is mixed with zinc acetate and a predetermined dopant in a solution consisting of xylene, hydrofuran and anhydrous alcohol with surfactant effect, and poly-vinylcarbazole (PVK) is added to the mixed solution It may comprise a composition.

Preferably, the ink solution is a composition in which thiourea (NH2CSNH2) is mixed with a solution made of xylene, hydrofuran, and anhydrous alcohol with surfactant effect, and a poly-vinylcarbazole (PVK) is added to the mixed solution. It may include.

Preferably, the PVK is selected from TPD (N, N'-bis (3-methylphenyl) -N, N-diphenyl- [1,1'-biphenyl] -4,4'-diamine), and carbazole derivatives. It can be replaced by either.

Preferably, the ink solution is mixed with zinc acetate and a predetermined dopant in a solution consisting of xylene, hydrofuran and anhydrous alcohols having a surfactant effect, NVK (N-vinylcarbazole) is added to the mixed solution It may comprise a composition.

Preferably, the ink solution is thiourea (NH2CSNH2) is mixed with a solution consisting of xylene, hydrofuran and anhydrous alcohol with a surfactant effect, NVK (N-vinylcarbazole) is added to the mixed solution It may include.

In addition, the ink solution may be added to the composition a photoreaction initiator to improve the polymerization reaction rate from the NVK to poly-vinylcarbazole (PVK).

An organic-inorganic hybrid EL device according to an aspect of the present invention includes a PEDOT / PSS layer formed on the lower electrode layer; And a thin film forming method which forms a film through chemical reaction of two or more ink solutions ejected by ejecting respective ink solutions from two or more ink heads of an inkjet printer, and is formed on the PEDOT / PSS layer, It characterized in that it comprises a composite fluorescent layer formed in the polymer layer to act as a hole injection.

Furthermore, the LiF layer may further include a LiF layer formed on the composite fluorescent layer.

According to the present invention, the problem of storage of ink using nano-sized particles and the problem of storage by specific gravity of particles, in the case of nano-sized powder is difficult to increase the concentration of the powder, or difficult to manufacture the powder, Each other compound is ejected from the ink head even when it is not present, and the desired materials are synthesized through the reaction of the respective ejections on the substrate, thereby providing a means for solving the above problems at once.

In addition, it is possible to control the size and electrical or optical properties of the nanoparticles produced by mixing a variety of functional polymers in the reactive ink, the concentration difference between each of the initial injection reactants as a principle of obtaining a uniform reaction in the method using a reactive inkjet According to the diffusion and reaction at the same time, the heat of reaction from the chemical reaction acts as the transport heat of the unreacted reactant to obtain a relatively uniform reaction, it is possible to synthesize a uniform reaction product in the micro-sized region . Therefore, a highly efficient hybrid light emitting device can be manufactured at low cost by using an organic-inorganic composite film patterned by reactive inkjet printing.

1 is a cross-sectional view of an organic-inorganic hybrid electroluminescent device according to an exemplary embodiment.
2 is a view for explaining an organic-inorganic hybrid electroluminescent device according to an embodiment of the present invention.
3 is a flowchart illustrating a method of manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet according to an embodiment of the present invention.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, a method of manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 3. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Inkjet printing technology is a method of ejecting and recording ink droplets only when printing under atmospheric pressure, and the method of forming ink droplets is a piezoelectric method of making ink droplets using a piezoelectric transducer, and spraying ink by making bubbles by using heat. The piezoelectric method is further divided into a planar transducer such as a thin film or a piston and a cylindrical transducer, depending on the shape of the piezoelectric transducer. In the case of using a piezoelectric transducer, the transducer is attached to an ink chamber or a nozzle to form ink droplets as the piezoelectric element shrinks, and in the case of using a bubble, the volume expands as the bubble size increases, thereby pushing the ink out of the ink chamber. Drops will form. In all of these methods, ink resupply is automatic by capillary suction, so there is no need for a pump, and ink drops can be ejected only when you want to record them, so you can call them "drop-on-demand" (DOD). It is called by name.

In the electronics industry, there is a trend to manufacture inexpensive, high resolution and fine lines of electronic devices, and thus, a printing technology using an inkjet is in the spotlight. Technological developments on bubble jet or piezo ink jet technology have been actively carried out, and a lot of research is being done now. However, the technique using the characteristics of the conventional inkjet printing has been examined in many parts, such as the formation of a metal conductive film and the formation of a ceramic film. However, ink containing a metal powder of a predetermined size or more may be clogged by nozzles or sprayed metal particles. It is difficult to maintain the ink produced for a long time due to its high specific gravity, and when nano-sized metal particles are contained, it is impossible to obtain sufficient conductivity as a conductor because the metal particles are not contained at a certain concentration or breakage of the formed pattern. There are problems caused, similar problems in the formation of ceramic films, or the problem of making an ink impossible in the case of a material that is extremely difficult to manufacture nanopowders.

The present invention uses a reactive inkjet method to directly form a nano-fluorescence layer or nano-fluorescence particles of a desired pattern from a reactive ink sprayed from two or more heads, and to include a polymeric material that can act as a hole injection in the manufacture of reactive ink By simultaneously forming a pattern and a nano phosphor and a hole injection layer surrounding them, and furthermore, according to the principle developed more in the DOD method, which is an advantage of inkjet printing technology, a pattern film of a desired material is synthesized in a desired part to solve the problem of the conventional ink. The point is to solve.

Example 1 Preparation of Reactive Ink for Fabrication of Nanophosphor and Hole Transport Polymer Composite Membrane

1-1. Preparation of Inks Containing Zinc Ions

0.54 [g] of zinc acetate and 0.0054 [g] of manganese acetate as dopant to 50 [ml] of xylene, 40 [ml] of hydrofuran and anhydrous alcohol with surfactant effect, here 10 [ml] Mix in the resulting solution. In addition, 0.5 ~ 3 [g] of PVK (poly-vinylcarbazole), which plays a role of viscosity control and hole transport, is dissolved in the mixed solution to have an appropriate viscosity during printing.

Here, as the dopant, salts of metals such as copper, silver, europium and the like may be used in an amount of about 0.1 to 2 [%] relative to zinc ions, and PVK may be selected from TPD (N, N'-bis (3-methylphenyl) -N, N-diphenyl- [1,1'-biphenyl] -4,4'-diamine), and carbazole derivatives.

1-2. Ink production containing sulfur ions

Thiourea (NH2CSNH2) 0.64 [g] is mixed into a solution consisting of 50 [ml] xylene, 40 [ml] hydrohydroan and anhydrous alcohol with surfactant effect, here 10 [ml], and printed 0.5 to 3 [g] of PVK (poly-vinylcarbazole), which plays a role of viscosity control and hole transport, is dissolved in the mixed solution to have a proper viscosity.

Herein, the amount of PVK added is preferably equal to the amount of PVK included in preparing the ink containing zinc ions of 1-1, and PVK is TPD (N, N'-bis (3-methylphenyl) -N, N -Diphenyl- [1,1'-biphenyl] -4,4'-diamine), and carbazole derivatives.

1-3. Preparation of Inks Containing Zinc Ions and NVK

0.54 [g] of zinc acetate and 0.0054 [g] of manganese acetate as dopant to 50 [ml] of xylene, 40 [ml] of hydrofuran and anhydrous alcohol with surfactant effect, here 10 [ml] It is mixed with the solution, which is dissolved by adding about 0.5 to 3 [g] of NVK (N-vinylcarbazole).

Here, as the dopant, salts of metals such as copper, silver, and europium may be used at about 0.1 to 2 [%] relative to zinc ions, and light such as azobisisobutyronitrile (AIBN) to increase the polymerization reaction rate from NVK to PVK. The reaction initiator and the like can be used by putting in about 1 [%] compared to NVK.

1-4. Preparation of Inks Containing Sulfur Ions and NVK

Thiourea (NH2CSNH2) 0.64 [g] is mixed with a solution consisting of 50 [ml] xylene, 40 [ml] hydrohydroan and an anhydrous alcohol having a surfactant effect, here 10 [ml]. NVK (N-vinylcarbazole) is added to the mixed solution to dissolve 0.5 ~ 3 [g].

In this case, the amount of NVK added is preferably equal to the amount of NVK included in the preparation of the ink containing zinc ions and NVK of 1-3, such as azobisisobutyronitrile (AIBN) in order to speed up the polymerization reaction from NVK to PVK. Photoreaction initiators and the like may be used in an amount of about 1 [%] relative to NVK.

Example 2 Fabrication of Organic Inorganic Hybrid Electroluminescent Device Composed of Nano Fluorescent Layer and Hole Transport Polymer

2 is a view for explaining an organic-inorganic hybrid electroluminescent device according to an embodiment of the present invention.

Referring to FIG. 2, the organic-inorganic hybrid EL device includes a lower electrode layer 220, a PEDOT / PSS layer 230, a composite fluorescent layer 240, a LiF layer 250, and an upper electrode layer (as shown in FIG. 2A). 260).

The lower electrode layer (+) 220 is formed by coating on a transparent plastic substrate or glass substrate 210 including any one of a polymer film substrate, such as PET, PEN, PP, such as ITO, FTO, doped ZnO It may be formed by a transparent conductive film containing any one of the transparent electrode material.

The PEDOT / PSS layer 230 is a hole injection layer formed on the lower electrode layer 220 and is a composite layer of PEDOT (poly (3,4-ethylenedioxythiophene)) and PSS (poly (styrenesulfonate)). .

In this case, the generated PEDOT / PSS layer 230 may be manufactured in various film thicknesses, and may be generally manufactured in a thickness of 30 [nm] to 200 [nm], before forming the composite fluorescent layer 240. The PEDOT / PSS layer 230 may be completely dried at 80 degrees or higher.

The composite fluorescent layer 240 injects the ink prepared in 1-1 and 1-2 of [Example 1] into ink of an inkjet printer having two or more ink heads, respectively, and prints the PEDOT / It is applied on top of the PSS layer and reacted to form nano-fluorescent particles in the desired pattern form in the hole injection polymer. That is, the nano-fluorescence layer and the hole injection polymer are simultaneously formed in a patterned state.

At this time, in order to accelerate the formation of ZnS: Mn, the heat treatment may be applied for 30 minutes or more at 80 degrees or more.

Alternatively, the composite fluorescent layer 240 injects the ink prepared in 1-3 and 1-4 of [Example 1] into ink of an inkjet printer having two or more ink heads, respectively, and prints the ink in the pattern to be printed. It is applied on top of the PEDOT / PSS layer and reacted to form the nanofluorescent layer and the hole injection polymer in a patterned state at the same time.

At this time, in order to accelerate the formation of ZnS: Mn and the polymerization reaction of NVK, heat treatment may be performed at 80 ° C. or higher for 30 minutes or more, and when the photoreaction initiator is used together with the heat treatment, or 5 minutes to UV lamp to increase the reaction rate. 10 minutes can be processed.

Here, the composite fluorescence formed by using the chemical reaction of two inks 1-1 and 1-2 of [Example 1] or the chemical reaction of two inks 1-3 and 1-4 of [Example 1] The layer is nanofluorescence particles 241, as can be seen from the perspective view of the composite fluorescent layer shown in Figure 2b because each of the reactants initially injected through a uniform reaction using a reactive inkjet to cause the diffusion and reaction according to the concentration difference It is relatively uniformly surrounded by the polymer layer 242 serving as the hole injection role, thereby improving the uniformity of the nano-phosphor.

That is, the composite fluorescent layer 240 is formed together in the polymer layer 242, that is, the hole transport layer in which the nano-fluorescence particles 241 for light emission play a role of hole transport.

The LiF layer 250 is formed on the composite fluorescent layer 230 by using a general deposition method or a solution coating method, and may be formed to a thickness of 0.1 [nm] to 5 [nm].

The upper electrode layer (-) 260 is formed on the LiF layer 250, and may be formed by coating a metal film including Pt or a noble metal (Au, Ag, etc.) material having high light reflectance.

In this case, the upper electrode layer 160 may be formed to a thickness of 10 [nm] to 500 [nm] using Pt, or may be formed to a thickness of 100 nm to 400 nm using a transparent electrode material.

Such an organic-inorganic hybrid electroluminescent device using a reactive inkjet according to an embodiment of the present invention is selected from the group consisting of a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer and an electron injection layer between the lower electrode layer and the upper electrode layer. It may further comprise one or more layers.

At this time, as the hole injection layer and the hole transport layer material, PEDOT: PSS, TPD (N, N'-), which is PEDOT (poly (3,4-ethylenedioxythiophene)) doped with a PSS (poly (styrenesulfonate)) layer Bis (3-methylphenyl) -N, N-diphenyl- [1,1'-biphenyl] -4,4'-diamine), and carbazole derivatives such as PVK, and the like, and the like, and an electron transport layer material Aluminum trihydroxyquinoline (Alq3), 1,3,4-oxadiazole derivative PBD (2- (4-biphenylyl) -5-phenyl-1,3,4-oxadiazole), quinoxaline derivative TPQ (1,3,4-tris [(3-penyl-6-trifluoromethyl) quinoxaline-2-yl] benzene) and triazole derivatives can be used, and the electron injection layer material is LiF, CsF, MgF2, CaF2 Ionic compounds such as LiO 2, NaF, NaCl, KCl, K 2 O, RbCl, and all alkali metal materials can be used.

In addition, the material for forming the composite fluorescent layer is a nano-phosphor selected from among a fluorescent material doped with ions such as Ag, Mn, Cu, Cl, Al, etc. based on a sulfide-based structure of ZnS, CdS or Two or more kinds of nano phosphors for emitting white light may be used.

As described above, the organic-inorganic hybrid electroluminescent device according to the present invention simultaneously forms a nano-phosphor acting as a light emitting layer in a polymer layer acting as a hole transport through a chemical reaction between inks by reactive inkjet, thereby agglomeration of nano-fluorescence particles. Uniformity can be removed to improve the uniformity, and the cost competitiveness can be improved because a simple process and a material are used as compared to the organic EL type optical device.

In addition, it can be applied to various optical devices because it can be manufactured inexpensively and stably, and ink containing a metal powder of a predetermined size or more is maintained for a long time due to the clogging of a nozzle or a large specific gravity of metal particles when spraying. Difficult to solve, a problem in which, when a nano-sized metal particle is contained, a sufficient concentration as a conductor is not obtained or a breakage of a formed pattern is caused by not containing a metal particle of a certain concentration, or similar problem in the formation of a ceramic film. In the case of a material which is extremely difficult to manufacture nanopowders, it is possible to solve problems of conventional inks, such as a problem in that it is impossible to manufacture ink.

3 is a flowchart illustrating a method of manufacturing an organic-inorganic hybrid electroluminescent device using a reactive inkjet according to an embodiment of the present invention.

Referring to FIG. 3, a transparent conductive substrate including any one of a transparent plastic substrate including any one of polymer film substrates such as PET, PEN, and PP or a transparent electrode material such as ITO, FTO, and doped ZnO on a glass substrate. Coating the film to form a lower electrode layer for applying a positive voltage (S310).

A PEDOT / PSS layer, which is a layer of PEDOT (poly (3,4-ethylenedioxythiophene)) and PSS (poly (styrenesulfonate)), is formed as a hole injection layer on the formed lower electrode layer (S320).

At this time, the resulting PEDOT / PSS layer can be prepared with a film thickness of typically 30 [nm] ~ 200 [nm], it can be completely dried at 80 degrees or more.

Next, the nano-phosphor is formed using a thin film formation method in which each ink solution is ejected from two or more ink heads of an inkjet printer on the dried PEDOT / PSS layer to form a film through chemical reaction of the two or more ejected ink solutions. A composite fluorescent layer formed in the polymer layer serving as a hole injection is formed (S330).

For example, the inks prepared as described in 1-1 and 1-2 of [Example 1] described above were injected into the ink of an inkjet printer, respectively, and applied to the PEDOT / PSS layer on the pattern to be printed. The reaction may form a composite fluorescent layer in which the nanophosphor is formed in the polymer layer, and heat treatment is performed at 80 degrees or more for 30 minutes or more to accelerate the formation of ZnS: Mn.

As another example, the inks prepared as described in the above-mentioned [Example 1] 1-3 and 1-4 are respectively injected into the ink of the inkjet printer, and applied to the PEDOT / PSS layer on the pattern to be printed. After the reaction to form a composite fluorescent layer in which the nano-phosphor is formed in the polymer layer, in order to accelerate the formation of ZnS: Mn and the polymerization reaction of NVK, heat treatment at 80 degrees or more for 30 minutes, and the light reaction with heat treatment When using an initiator or to increase the reaction rate, the treatment is performed for 5 to 10 minutes with a UV lamp.

A LiF layer is formed on the composite fluorescent layer formed by step S330 using a general deposition method or a solution coating method, and an upper electrode layer is formed on the LiF layer using Pt or the like to apply a negative voltage. (S340, S350).

As described above, the organic-inorganic hybrid electroluminescent device manufacturing method according to the present invention can improve the uniformity of the nano-phosphor, solve the problems with the conventional ink, and can simultaneously form the hole transporting layer and the light emitting layer. In addition, it is possible to control the size, electrical or optical properties of the nanoparticles by hoping a variety of functional polymers in the ink to use a reactive ink.

The organic-inorganic hybrid electroluminescent device manufacturing method using the reactive inkjet according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and is not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the spirit of the present invention, it is not limited to the embodiments and the accompanying drawings. And should be judged to include equality.

220: lower electrode layer
230: PEDOT / PSS layer
240: composite fluorescent layer
241: nano fluorescent particles
242: polymer layer
250: LiF layer
260: upper electrode layer

Claims (10)

Forming a PEDOT / PSS layer over the lower electrode layer; And
The PEDOT / PSS is formed using a thin film formation method in which a zinc ion-containing ink solution and a sulfur ion-containing ink solution are respectively ejected from different ink heads of an inkjet printer to form a film through chemical reaction of the ejected ink solution. Forming a composite phosphor layer in which a nano phosphor is doped with ions in a polymer layer serving as a hole injection on the layer
Organic-inorganic hybrid electroluminescent device manufacturing method comprising a. The method of claim 1,
The ink solution containing the zinc ions
Zinc acetate and a predetermined dopant are mixed with a solution made of xylene, hydrofuran and anhydrous alcohol with surfactant effect, and the mixed solution includes a composition to which PVK (poly-vinylcarbazole) is added. An organic-inorganic hybrid electroluminescent device manufacturing method. The method of claim 1,
The ink solution containing sulfur ions is
Thiourea (NH2CSNH2) is mixed with a solution made of xylene, hydrofuran and anhydrous alcohol with surfactant effect, and the mixed solution comprises a composition in which poly-vinylcarbazole (PVK) is added. Organic inorganic hybrid electroluminescent device manufacturing method. The method according to claim 2 or 3,
The PVK is
Replaceable with any one of TPD (N, N'-bis (3-methylphenyl) -N, N-diphenyl- [1,1'-biphenyl] -4,4'-diamine), and carbazole derivatives An organic-inorganic hybrid electroluminescent device manufacturing method. The method of claim 1,
The ink solution containing the zinc ions
Zinc acetate and a predetermined dopant are mixed with a solution made of xylene, hydrofuran and anhydrous alcohol with surfactant effect, and the mixed solution includes a composition to which NVK (N-vinylcarbazole) is added. An organic-inorganic hybrid electroluminescent device manufacturing method. The method of claim 1,
The sulfur ion-containing ink solution
Thiourea (NH2CSNH2) is mixed with a solution made of xylene, hydrofuran and anhydrous alcohol with surfactant effect, and the mixed solution comprises a composition to which NVK (N-vinylcarbazole) is added. Organic inorganic hybrid electroluminescent device manufacturing method. The method according to claim 5 or 6,
The ink solution is
The method of manufacturing an organic-inorganic hybrid electroluminescent device, characterized in that an optical reaction initiator comprising azobisisobutyronitrile (AIBN) for improving the polymerization rate from NVK to poly-vinylcarbazole (PVK) is added to the composition. The method of claim 7, wherein
The photoreaction initiator
An organic-inorganic hybrid electroluminescent device manufacturing method comprising azobisisobutyronitrile (AIBN). A PEDOT / PSS layer formed over the lower electrode layer; And
The PEDOT is formed by a thin film forming method in which a zinc ion-containing ink solution and a sulfur ion-containing ink solution are ejected from different ink heads of an inkjet printer to form a film through chemical reaction of two or more ejected ink solutions. The composite phosphor layer formed on the / PSS layer and formed by doping nano phosphors with ions inside the polymer layer serving as hole injection.
Organic-inorganic hybrid electroluminescent device comprising a. 10. The method of claim 9,
LiF layer formed on the composite fluorescent layer
An organic-inorganic hybrid electroluminescent device further comprising.

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