Flexible fast response electrochromic device and method of making the same

Abstract

The present application relates to the technical field of electrochromic devices, and particularly relates to a novel fast-response electrochromic device and a preparation method thereof. The device is a sandwich structure, and the middle layer is an electrolyte layer. The electrolyte layer comprises a non-solidified region in the center and a solidified region at the edge. The substrate layer and the electrode layer are both transparent materials. The preparation method comprises the following steps: preparing an electrolyte; sputtering an electrode layer on a clean transparent substrate, and sealing the edges to prepare an electrode box with one side open, injecting the electrolyte, and then sealing the injection port; covering the non-solidified region with a light-proof mold, and performing light-induced solidification or heat-induced solidification on the solidified region, so that the liquid electrolyte in the solidified region is converted into solid electrolyte, and the device preparation is completed. The advantages are as follows: the mechanical strength and sealing performance of the device are enhanced, and the leakage rate is significantly reduced; the main part of the device retains the high ionic conductivity of the liquid electrolyte, and the excellent color-changing speed and effect of the electrochromic device are ensured.

Description

Technical Field

[0001] This invention relates to the field of electroluminescent device technology, and in particular to a novel fast-response electroluminescent device and its preparation method. Background Technology

[0002] Electrochromism (EC) is a phenomenon in which the optical properties (such as reflectivity, transmittance, and absorptivity) of a material undergo stable and reversible color changes under the influence of an applied electric field. This technology has broad application prospects in energy-saving windows and displays. In recent years, this technology has made significant progress in several fields.

[0003] Electrochromic technology is a novel electrochromic technology that achieves reversible switching between a transparent state, a dark-colored opaque state, and a specular reflective state through the cyclic deposition and dissolution of a metal on the surface of a transparent conductive layer on the working electrode, thereby modulating natural light and infrared heat. It can adjust the transmittance from 90% to 0.1% and the modulation rate to as high as 90%. In contrast, traditional electrochromic glass typically only achieves a visible light modulation rate of 60-70%, as disclosed in invention publication CN116119942B, dated August 9, 2024, entitled "A Visible-Near-Infrared Dual-Frequency Electrochromic Niobium Tungsten Oxide Thin Film and Its Preparation Method and Application." The unique feature of electrochromic technology is the addition of a specular reflective state, which can reflect almost all visible and infrared light, with an average reflectivity exceeding 90%, thus significantly reducing visible light and infrared heat radiation from the sun.

[0004] The electrolyte layer is a core component of electrochromic devices, and based on their physical state, they are mainly classified into three categories: liquid electrolytes, gel electrolytes, and solid electrolytes. Liquid electrolytes exhibit excellent color-changing effects in electrochromic devices due to their high ionic conductivity, but they also have significant drawbacks, such as poor chemical stability, susceptibility to decomposition, lower safety, leakage risk, and complex encapsulation processes that increase manufacturing difficulty. Gel electrolytes have improved the stability of liquid electrolytes to some extent, but their ionic conductivity, mechanical properties, and long-term stability still need further improvement to adapt to a wider range of applications. In contrast, solid electrolytes exhibit superior chemical stability and mechanical properties, are less prone to leakage, offer high safety, and are suitable for various environments. However, the relatively low ionic conductivity of solid electrolytes limits their color-changing speed and effect. Furthermore, the preparation process of solid electrolytes is complex and costly, and interface issues remain a technical challenge requiring further research and solutions.

[0005] In summary, existing electrolytes for electroluminescent devices have many shortcomings. Liquid electrolytes suffer from poor stability and low safety, and are difficult to encapsulate; gel electrolytes have insufficient ionic conductivity and mechanical properties, and lack long-term stability; solid electrolytes, while safe and stable, have low conductivity, complex fabrication processes, and prominent interface problems. These drawbacks limit the performance and application range of electroluminescent devices. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a novel fast-response electroluminescent device and its fabrication method.

[0007] The primary objective of this invention is to provide a novel fast-response electroluminescent device, comprising, from bottom to top, a substrate layer, an electrode layer, an electrolyte layer, another electrode layer, and an encapsulation layer;

[0008] The electrolyte layer includes a non-cured region at the center and a cured region at the edge; the substrate layer is a transparent substrate, and the electrode layer is a transparent conductive layer.

[0009] Preferably, the electrolyte layer thickness is 10µm to 1.5mm.

[0010] Preferably, the electrolyte in the electrolyte layer comprises an organic solvent, an electrolyte salt, additives, a polymer matrix, and an initiator.

[0011] Preferably, the substrate is a glass substrate; the substrate is made of the same material as the encapsulation layer; and the electrode layer is made of ITO electrode, Pt electrode, or silver nanowire.

[0012] The second objective of this invention is to provide a novel method for fabricating a fast-response electroluminescent device, specifically comprising the following steps:

[0013] S1. Preparation of electrolyte: The organic solvent, electrolyte salt, additives, polymer matrix and initiator are mixed evenly to obtain the electrolyte;

[0014] S2. Preparation of the electrode box; specifically including the following sub-steps:

[0015] S201. Clean the transparent substrate and dry it to obtain the substrate layer;

[0016] S202. An electrode layer is obtained by sputtering on the surface of the substrate layer;

[0017] S203. Prepare a polytetrafluoroethylene (PTFE) gasket and place it between two opposing electrode layers. Seal both sides of the PTFE gasket in parallel. After sealing, remove the PTFE gasket and seal one of the remaining two sides to form an electrode box with a single-sided opening.

[0018] S3. Device packaging and curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, and the injection port is sealed. The non-cured area is covered with an opaque mold, and the curing area is photo-initiated or thermally-initiated to convert the liquid electrolyte in the curing area into a solid electrolyte, thus completing the device fabrication.

[0019] Preferably, the initiator is a photoinitiator or a thermal initiator; the photoinitiator is Irgacure 184, Irgacure 651, triphenylthionium hexafluorophosphate or diphenyl mercaptan; the thermal initiator is azobisisobutyronitrile, benzoyl peroxide or sodium nitrite.

[0020] Preferably, step S1 includes the following sub-steps:

[0021] S101. Mix the electrolyte salt and additives in proportion, add them to the organic solvent, and stir for more than 3 hours to ensure that the mixture is uniform;

[0022] S102. Add 5-30 wt% of the polymer matrix to the mixture, and continue stirring for more than 3 hours until it is uniformly dispersed;

[0023] S103. Add 0.1~1wt% of photoinitiator or thermal initiator according to the total mass of the electrolyte, and stir until uniformly distributed to obtain the electrolyte.

[0024] Preferably, the electrolyte salt in step S1 is silver nitrate, lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate, or trichloroaluminate; the additive is copper chloride, tetrabutylammonium bromide, or / and lithium bromide; the organic solvent is propylene carbonate, ethylene carbonate, dimethyl carbonate, N,N-dimethylformamide, ethyl methyl carbonate, or N-methyl-2-pyrrolidone; and the polymer matrix includes neopentyl glycol diacrylate, ethylene glycol dimethacrylate, hydroxyethyl acrylate, or / and trimethylolpropane triacrylate.

[0025] Preferably, in step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10 wt% of the total electrolyte mass; the photoinitiator is Irgacure 184, accounting for 0.5 wt% of the total electrolyte mass.

[0026] In step S3, a photo-initiated curing method is used, in which an ultraviolet lamp with a wavelength matching that of the photoinitiator is used to irradiate the curing area for 3 to 10 minutes.

[0027] Preferably, in step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10 wt% of the total mass of the electrolyte; the thermal initiator is azobisisobutyronitrile.

[0028] In step S3, a thermally initiated curing method is used, with a heating temperature of 60~90℃ and a heating time of 1~3 hours.

[0029] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0030] This invention utilizes in-situ polymerization technology to precisely convert the liquid electrolyte at the periphery of an electroreflective device into a solid electrolyte, thus forming a unique solid-liquid hybrid electrolyte system. This design combines the chemical stability and mechanical strength advantages of solid electrolytes, significantly enhancing the device's mechanical strength and sealing performance, effectively preventing electrolyte leakage, reducing the leakage rate by 95%, ensuring the device's reliability and safety, and effectively overcoming the challenges of traditional liquid electrolytes in the encapsulation process. While maintaining the high stability and safety of the solid electrolyte at the periphery, the main body of the device retains the high ionic conductivity of the liquid electrolyte, ensuring the electroreflective device's excellent color-changing speed and effect. Furthermore, the photocuring or thermal curing process is simple, enabling large-scale roll-to-roll production of flexible electroreflective devices. This invention opens up new avenues for in-depth research and application of electroreflective technology and provides technical support for the large-area and industrialization of electroreflective devices. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a novel fast-response electroluminescent device provided according to an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the planar region division of a novel fast-response electroluminescent device provided according to an embodiment of the present invention.

[0033] Figure label:

[0034] 1. Substrate layer;

[0035] 2. Electrode layer;

[0036] 3. Electrolyte layer;

[0037] 4. Encapsulation area;

[0038] 5. Cured area;

[0039] 6. Non-cured areas;

[0040] 7. Encapsulation layer. Detailed Implementation

[0041] In the following description, embodiments of the invention will be described with reference to the accompanying drawings. In the description below, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0043] The present invention provides a novel fast-response electroluminescent device, comprising a substrate layer, an electrode layer, an electrolyte layer, another electrode layer, and an encapsulation layer arranged sequentially from bottom to top;

[0044] The electrolyte layer has a thickness of 10µm to 1.5mm; the electrolyte layer includes a non-cured area in the center and a cured area at the edge;

[0045] The substrate is a transparent substrate, preferably a glass substrate;

[0046] The electrode layer consists of a working electrode and a counter electrode, and is preferably a transparent conductive layer, which can be achieved by conductive glass (such as ITO glass) or a transparent conductive composite layer formed by combining transparent materials and conductive materials; the electrode layer is made of ITO electrode, Pt electrode or silver nanowire; in a specific embodiment, the electrode layer is an ITO electrode.

[0047] Electrolytes consist of organic solvents, electrolyte salts, additives, polymer matrices, and initiators;

[0048] The preparation method specifically includes the following steps:

[0049] S1. Preparation of electrolyte: The organic solvent, electrolyte salt, additives, polymer matrix, and initiator are mixed evenly to obtain the electrolyte; specifically, it includes the following sub-steps:

[0050] S101. Mix the electrolyte salt and additives in a precise ratio, add them to an organic solvent, and stir for at least 3 hours to ensure the mixture is homogeneous; the mass ratio of electrolyte salt to additives is 5~10:60~70.

[0051] Preferably, the electrolyte salt is silver nitrate (AgNO3), lithium perchlorate (LiClO4), lithium tetrafluoroborate (LiPF4), lithium hexafluorophosphate (LiPF6), trichloroaluminate (Al(ClO4)3), etc.; the additives are copper chloride CuCl2, tetrabutylammonium bromide (TBABr), lithium bromide, etc.; the organic solvents are propylene carbonate (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), N,N-dimethylformamide (DMF), ethyl methyl carbonate (EMC), N-methyl-2-pyrrolidone (NMP), and various ionic solvents, etc.

[0052] In a specific embodiment, the electrolyte salt is silver nitrate AgNO3, and the additives are copper chloride CuCl2 and tetrabutylammonium bromide TBAB, which are mixed in a mass ratio of 6.5:1:62.

[0053] S102. Add 5-30 wt% of the polymer matrix to the mixture, and continue stirring for more than 3 hours until it is uniformly dispersed;

[0054] Preferably, the polymer matrix accounts for 10-15 wt% of the total mass of the electrolyte; the polymer matrix includes, but is not limited to, monomers such as neopentyl glycol diacrylate (NPGDA), ethylene glycol dimethacrylate (EGDMA), hydroxyethyl acrylate (HEA), and trimethylolpropane triacrylate (TMPTA);

[0055] In a specific embodiment, the polymer matrix is ​​neopentyl glycol diacrylate (NPGDA), accounting for 10 wt% of the total electrolyte mass;

[0056] S103. Add 0.1~1wt% of photoinitiator or thermal initiator according to the total mass of the electrolyte, and stir until uniformly distributed to obtain the electrolyte;

[0057] Preferably, the photoinitiator is Irgacure 184, Irgacure 651, triphenylthionium hexafluorophosphate, or diphenyl mercaptan, etc.; in a specific embodiment, the photoinitiator is Irgacure 184, accounting for 0.5 wt% of the total mass of the electrolyte;

[0058] Preferably, the thermal initiator is azobisisobutyronitrile, benzoyl peroxide, or sodium nitrite, etc.

[0059] S2. Preparation of the electrode box:

[0060] S201. Clean the transparent substrate (glass substrate), dry it, and obtain the substrate layer;

[0061] In a specific embodiment, the glass substrate is sequentially immersed in acetone, ethanol and deionized water, and ultrasonically cleaned for 15 minutes in each case, followed by drying.

[0062] S202. An electrode layer is obtained by sputtering on the surface of the substrate layer;

[0063] Specifically, the electrode layer is an ITO electrode;

[0064] S203. Prepare a polytetrafluoroethylene (PTFE) gasket and place it between two opposing electrode layers. Seal both sides of the PTFE gasket in parallel. After sealing, remove the PTFE gasket and seal one of the remaining two sides to form an electrode box with a single-sided opening.

[0065] In a specific embodiment, the polytetrafluoroethylene gasket is long and strip-shaped with a thickness of 300 micrometers; the edges are sealed using a hot melt glue gun.

[0066] S3. Device packaging and curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, and the injection port is sealed. The non-curing area is covered with an opaque mold, and the curing area is photo-initiated or thermally-initiated to convert the liquid electrolyte in the curing area into a solid electrolyte, thus completing the device fabrication.

[0067] Preferably, photoinitiated curing involves irradiating the curing area with an ultraviolet lamp whose wavelength matches that of the selected photoinitiator for 3 to 10 minutes; in a specific embodiment, the ultraviolet lamp wavelength is 365 nm and the irradiation time is 5 minutes.

[0068] Preferably, thermally initiated curing is performed by heating, with the heating temperature set between 60 and 90°C and the heating time between 1 and 3 hours.

[0069] Example 1

[0070] See Figures 1-2 As shown, this embodiment provides a novel fast-response electroluminescent device and its fabrication method; the device includes a substrate layer 1, an electrode layer 2, an electrolyte layer 3, and an encapsulation layer 7 arranged sequentially from bottom to top. Figure 1 );

[0071] The electrolyte layer 3 has a thickness ranging from 10 μm to 1.5 mm; the electrolyte layer 3 includes a non-cured region 6 in the center and a cured region 5 at the edge; the substrate layer 1 and the encapsulation layer 7 are both glass substrates; the electrode layer 2 is an ITO electrode.

[0072] The preparation method specifically includes the following steps:

[0073] S1. Preparation of electrolyte: This includes the following sub-steps:

[0074] S101. Mix silver nitrate (AgNO3), copper chloride (CuCl2), and tetrabutylammonium bromide (TBABr) in a mass ratio of 6.5:1:62, add the mixture to the solvent N-methyl-2-pyrrolidone (NMP), and stir for at least 3 hours to ensure the mixture is homogeneous.

[0075] S102. Add 10 wt% of the polymer matrix neopentyl glycol diacrylate (NPGDA) to the mixture, and continue stirring for more than 3 hours until it is uniformly dispersed;

[0076] S103. Add 0.5 wt% of photoinitiator Irgacure 184 to the total electrolyte and stir until uniformly distributed to obtain the electrolyte.

[0077] S2. Preparation of the electrode box:

[0078] S201. The glass substrate is placed in acetone, ethanol and deionized water in sequence, and ultrasonically cleaned for 15 minutes in each. Then it is dried to obtain substrate layer 1 or encapsulation layer 7.

[0079] S202. ITO film is deposited on the surface of substrate layer 1 or encapsulation layer 7 by sputtering to obtain electrode layer 2;

[0080] S203. Prepare a long strip of polytetrafluoroethylene (PTFE) gasket with a thickness of 300 micrometers. Place the PTFE gasket between two oppositely placed electrode layers 2. Seal the two sides of the PTFE gasket parallel to each other using a hot melt glue gun. After sealing, remove the PTFE gasket and seal one of the remaining two sides to form an electrode box with a single-sided opening.

[0081] S3. Device Packaging and Curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, and the injected part is the electrolyte layer 3; the injection port is sealed, and the outer periphery is formed by sealing; the non-curing area 6 is covered with an opaque mold, and the curing area 5 is irradiated with a UV lamp with a wavelength of 365nm to perform photo-initiated curing for 5 minutes; the liquid electrolyte in the curing area 5 is converted into a solid electrolyte, and the device fabrication is completed.

[0082] like Figure 2As shown, the device surface is divided into different regions, with curing region 5 being the critical region requiring curing. When using photoinitiated curing, a specific photoinitiator is selected, such as Irgacure 184, Irgacure 651, triphenylthionium hexafluorophosphate, or diphenylthiol. To ensure that only curing region 5 is cured, the non-curing region 6 needs to be shielded. Subsequently, the curing region 5 is irradiated with an ultraviolet lamp whose wavelength matches the selected initiator to achieve curing of the liquid electrolyte. The curing time is affected by the thickness of the electrolyte layer 3 and the amount of polymer matrix and initiator added, generally ranging from 3 to 10 minutes.

[0083] The shape of the device of the present invention is in Figure 2 The example shown is a square, but the application of this invention is not limited to this; rectangular, circular, rhomboid, and other irregular device shapes can also be classified in this way.

[0084] Example 2

[0085] This embodiment provides a novel fast-response electroluminescent device and its fabrication method; the device structure is the same as in Embodiment 1;

[0086] The preparation method specifically includes the following steps:

[0087] S1. Preparation of electrolyte: This includes the following sub-steps:

[0088] S101. Mix silver nitrate (AgNO3), copper chloride (CuCl2), and tetrabutylammonium bromide (TBABr) in a mass ratio of 6.5:1:62, add the mixture to the organic solvent N-methyl-2-pyrrolidone (NMP), and stir for at least 3 hours to ensure the mixture is homogeneous.

[0089] S102. Add 10 wt% of the polymer matrix neopentyl glycol diacrylate (NPGDA) to the mixture, and continue stirring for more than 3 hours until it is uniformly dispersed;

[0090] S103. Add 0.5 wt% of the thermal initiator azobisisobutyronitrile (AIBN) to the total electrolyte and stir until uniformly distributed to obtain the electrolyte.

[0091] S2. Preparation of the electrode box:

[0092] S201. The glass substrate is placed in acetone, ethanol and deionized water in sequence, and ultrasonically cleaned for 15 minutes in each. Then it is dried to obtain substrate layer 1 or encapsulation layer 7.

[0093] S202. ITO film is deposited on the surface of substrate layer 1 or encapsulation layer 7 by sputtering to obtain electrode layer 2;

[0094] S203. Prepare a long strip of polytetrafluoroethylene (PTFE) gasket with a thickness of 300 micrometers. Place the PTFE gasket between two oppositely placed electrode layers 2. Seal the two sides of the PTFE gasket parallel to each other using a hot melt glue gun. After sealing, remove the PTFE gasket and seal one of the remaining two sides to form an electrode box with a single-sided opening.

[0095] S3. Device Encapsulation and Curing: The electrolyte prepared in step S1 is injected into the electrode box prepared in step S2, with the injected portion being the electrolyte layer 3. One side of the injection port is sealed, forming an encapsulation area 4 around the seal. The non-cured area 6 is covered with an opaque mold, and the curing area is thermally initiated for curing using a heating method. The heating temperature is set to 60-90℃, and the heating time is 1-3 hours. This transforms the liquid electrolyte in the curing area into a solid electrolyte, completing the device fabrication. During the thermally initiated curing process, due to the thermal conductivity of the electrolyte and the transparent substrate, the non-cured area 6 adjacent to the curing area 5 will be indirectly heated. However, due to the uneven heat distribution, by precisely controlling the amount of polymer matrix and initiator added, as well as the curing time, it can be ensured that the non-cured area 6 remains liquid and does not solidify.

[0096] Brief Description of the Principle: In-situ polymerization of electrolytes is a highly efficient method for directly preparing polymer electrolytes within electrode materials or electrochromic devices. The in-situ polymerization process can be initiated in various ways, including thermal initiation, photoinitiation, chemical initiation, or electrochemical initiation. This invention utilizes thermal or photoinitiation. These two initiation methods provide a more precise operating space, allowing the polymerization reaction to occur in specific areas and to specific degrees, thereby avoiding the problems of uneven polymerization or over-polymerization that may occur in traditional methods. This enables precise control over the degree and depth of polymerization of the solid electrolyte at the edges of the device.

[0097] The key technical points of this invention are: (1) a solid-liquid combined electrolyte system: in-situ polymerization technology is implemented around the periphery of the electroluminescent device to convert the liquid electrolyte into a solid state, forming a robust solid electrolyte network (one of the core aspects of this invention). This method not only enhances the mechanical strength and sealing performance of the device, but also effectively prevents electrolyte leakage, reduces the leakage rate by 95%, and ensures stability under extreme environments, significantly improving the safety and durability of the device. While maintaining the solidification of the periphery, the electrolyte in the main body of the device remains liquid, ensuring the effective migration of ions inside the device and maintaining excellent ionic conductivity (greater than 10). -3(2) Preparation and optimization of electrolyte system: The protection points of this invention include the preparation method of solid-liquid electrolyte network, the composition of electrolyte system (specific combination and ratio of solid and liquid electrolytes), and a method for precise control of the planar area of ​​electroluminescent device. These designs ensure ionic conductivity and electrochemical stability. In summary, this invention innovatively proposes an electrolyte with both solid and liquid properties, a novel fast-response electroluminescent device and its preparation method and application. Using in-situ polymerization technology, the liquid electrolyte at the periphery of the electroluminescent device is precisely converted into a solid electrolyte, thus forming a unique solid-liquid hybrid electrolyte system. This design integrates the chemical stability and mechanical strength advantages of solid electrolyte, ensuring the reliability and safety of the device, while effectively overcoming the difficulties of traditional liquid electrolyte in the encapsulation process. While maintaining the high stability and safety of the solid electrolyte at the periphery, the main body of the device still retains the high ionic conductivity of the liquid electrolyte, ensuring the excellent color-changing speed and effect of the electroluminescent device. This invention opens up new avenues for the in-depth research and application of electroluminescent technology and provides technical support for the large-area and industrialization of electroluminescent devices. By providing a method for precise control of a specific area, it opens up new paths for the in-depth research and application of electroluminescent technology. Scientific analysis and experimental results consistently demonstrate the technical effectiveness of this invention, showcasing outstanding advantages in improving social, economic, and technological benefits.

[0098] It should be understood that the various forms of processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this invention can be achieved, and this is not limited herein.

[0099] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A novel fast-response electroluminescent device, characterized in that: It includes, from bottom to top, a substrate layer, an electrode layer, an electrolyte layer, another electrode layer, and an encapsulation layer; The electrolyte layer includes a non-cured area at the center and a cured area at the edge; The substrate layer is a transparent substrate, and the electrode layer is a transparent conductive layer.

2. The novel fast-response electroluminescent device according to claim 1, characterized in that: The thickness of the electrolyte layer is 10µm to 1.5mm.

3. The novel fast-response electroluminescent device according to claim 1, characterized in that: The electrolyte layer comprises an organic solvent, an electrolyte salt, additives, a polymer matrix, and an initiator.

4. The novel fast-response electroluminescent device according to claim 1, characterized in that: The substrate is a glass substrate; the substrate is made of the same material as the encapsulation layer; the electrode layer is made of ITO electrode, Pt electrode or silver nanowire.

5. A method for preparing a novel fast-response electroluminescent device according to any one of claims 1-4, characterized in that, Specifically, the steps include the following: S1. Preparation of electrolyte: The organic solvent, electrolyte salt, additives, polymer matrix and initiator are mixed evenly to obtain the electrolyte; S2. Preparation of the electrode box; specifically including the following sub-steps: S201. Clean the transparent substrate and dry it to obtain the substrate layer; S202. An electrode layer is obtained by sputtering on the surface of the substrate layer; S203. Prepare a polytetrafluoroethylene (PTFE) gasket and place it between two opposing electrode layers. Seal both sides of the PTFE gasket in parallel. After sealing, remove the PTFE gasket and seal one of the remaining two sides to form an electrode box with a single-sided opening. S3. Device packaging and curing: Inject the electrolyte prepared in step S1 into the electrode box prepared in step S2, and seal one side of the injection port. An opaque mold is used to cover the non-cured area, and photo-initiated curing or thermal-initiated curing is performed on the cured area to transform the liquid electrolyte in the cured area into a solid electrolyte, thus completing the device fabrication.

6. The method for fabricating a novel fast-response electroluminescent device according to claim 5, characterized in that: The initiator is a photoinitiator or a thermal initiator; the photoinitiator is Irgacure 184, Irgacure 651, triphenylthionium hexafluorophosphate or diphenyl mercaptan; the thermal initiator is azobisisobutyronitrile, benzoyl peroxide or sodium nitrite.

7. The method for fabricating a novel fast-response electroluminescent device according to claim 6, characterized in that: Step S1 includes the following sub-steps: S101. Mix the electrolyte salt and additives in proportion, add them to the organic solvent, and stir for more than 3 hours to ensure that the mixture is uniform; S102. Add 5-30 wt% of the polymer matrix to the mixture, and continue stirring for more than 3 hours until it is uniformly dispersed; S103. Add 0.1~1wt% of photoinitiator or thermal initiator according to the total mass of the electrolyte, and stir until uniformly distributed to obtain the electrolyte.

8. The method for fabricating a novel fast-response electroluminescent device according to claim 7, characterized in that: The electrolyte salt in step S1 is silver nitrate, lithium perchlorate, lithium tetrafluoroborate, lithium hexafluorophosphate, or trichloroaluminate; the additive is copper chloride, tetrabutylammonium bromide, or / and lithium bromide; the organic solvent is propylene carbonate, ethylene carbonate, dimethyl carbonate, N,N-dimethylformamide, ethyl methyl carbonate, or N-methyl-2-pyrrolidone; and the polymer matrix includes neopentyl glycol diacrylate, ethylene glycol dimethacrylate, hydroxyethyl acrylate, or / and trimethylolpropane triacrylate.

9. The method for fabricating a novel fast-response electroluminescent device according to claim 7, characterized in that: In step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10 wt% of the total electrolyte mass; the photoinitiator is Irgacure 184, accounting for 0.5 wt% of the total electrolyte mass. In step S3, a photo-initiated curing method is used, in which an ultraviolet lamp with a wavelength matching that of the photoinitiator is used to irradiate the curing area for 3 to 10 minutes.

10. The method for fabricating a novel fast-response electroluminescent device according to claim 7, characterized in that: In step S1, the polymer matrix is ​​neopentyl glycol diacrylate, accounting for 10 wt% of the total mass of the electrolyte; the thermal initiator is azobisisobutyronitrile. In step S3, a thermally initiated curing method is used, with a heating temperature of 60~90℃ and a heating time of 1~3 hours.

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