31 results about "Titanium dioxide thin film" patented technology

The invention discloses a preparation method of a three-dimensional titanium dioxide micro-nano structure, which belongs to the technical field of micro-nano structure preparation, and comprises the following steps: evaporating a titanium dioxide film on a clean glass substrate; spin-coating positive photoresist on the titanium dioxide thin film; carrying out electron beam exposure on the photoresist, customizing a pattern, and carrying out developing and fixing treatment on the photoresist; evaporating a chromium (Cr) film on the developed and fixed sample; stripping the residual photoresist, and obtaining a patterned chromium hard mask on the titanium dioxide thin film; performing reactive ion beam etching on the titanium dioxide film; and removing the chromium hard mask from the etched sample to obtain the three-dimensional titanium dioxide nano-column array micro-nano structure. The titanium dioxide micro-nano structure prepared by the method has high degree of freedom, and regular regulation and control of nano structure unit parameters can be realized by changing reactive ion beam etching process parameters.

The invention relates to a titanium dioxide film as well as a preparation method and application thereof. The preparation method comprises the following steps: providing a substrate; an electron beam evaporation deposition method is adopted to enable the evaporation source material to form a deposition film on the surface of the substrate; wherein in the electron beam evaporation deposition method, reaction gas comprises oxygen, and the flow of the oxygen is 40 sccm to 80 sccm; carrying out annealing treatment on the deposited film to prepare a titanium dioxide film; titanium dioxide in the titanium dioxide film preferentially grows along a (004) crystal face; the evaporation source material comprises trititanium pentoxide. The electron beam evaporation deposition method is adopted, oxygen is introduced in the vacuum environment, trititanium pentoxide is converted into titanium dioxide, the titanium dioxide preferentially and directionally grows on the surface of the substrate along the crystal face (004), and preferential growth of the titanium dioxide material in the film is regulated and controlled.

The present invention provides a titanium oxide film with excellent anti-reflective properties and manufacturing efficiency, as well as a method for producing the same. [Solution] The titanium oxide film 1 contains a crystal in which a group of Ti2O3 diffraction spots appear in the electron diffraction pattern observed with a transmission electron microscope, and the refractive index when light with a wavelength of 550 nm is incident on it is greater than 2.50 and less than or equal to 2.80.

The present invention belongs to the technical field of capacitors and specifically relates to a photosensitive capacitor and a preparation method thereof. The photosensitive capacitor includes an upper plate, an upper electrode, a CuWO4-TiO2 dielectric layer, a lower electrode, a lower plate and a conductive wire, wherein the lower plate is arranged below the lower electrode, the upper plate is arranged above the upper electrode, the CuWO4-TiO2 dielectric layer is located between the upper electrode and the lower electrode, two conductive wires are provided, respectively connecting the upper electrode and the lower electrode, the CuWO4-TiO2 dielectric layer is obtained by sintering CuWO4 on both sides of a titanium dioxide film, and the present invention modifies and composites rutile titanium dioxide with CuWO4 as a dielectric layer, forms a stable crystal interface between CuWO4 and rutile titanium dioxide, and photons of visible light incident on the CuWO4 can excite holes generated by electrons, inducing the rutile titanium dioxide to generate small polarons, thereby maintaining a relatively high dielectric constant, so that the photosensitive capacitor can effectively utilize sunlight to regulate capacitance.

The application belongs to the technical field of solar cell preparation, and relates to a levodopa molecule modified titanium dioxide film, a preparation method thereof and application thereof in a perovskite solar cell. The levodopa molecule is used to introduce a molecular interface layer in the perovskite and the titanium dioxide, passivate defects in the perovskite and the titanium dioxide, improve photoelectric conversion efficiency, and strengthen working stability and storage stability. The levodopa molecule modified titanium dioxide film prepared by the application can also be applied in the preparation of a perovskite solar cell. The perovskite solar cell is made of a conductive substrate, an electron transport layer, a perovskite layer, a hole transport layer and a metal electrode layer arranged from bottom to top, wherein the electron transport layer is the levodopa molecule modified titanium dioxide film.

The present invention discloses a method for preparing a titanium dioxide hole blocking layer for a large-area perovskite solar cell. The method uses n-butyl titanate as a titanium source, and generates an N- and F-co-doped titanium dioxide film by a mixed hydrolysis method with nitric acid and 3-fluoropropanol. The titanium dioxide hole blocking layer surface is interface-modified using 3-mercaptopropionic acid or mercaptoacetic acid to form the titanium dioxide hole blocking layer of the perovskite solar cell. The method generates the N- and F-co-doped titanium dioxide film by a mixed hydrolysis method with nitric acid and 3-fluoropropanol, thereby ensuring that the large-area hole blocking layer film does not have holes and maintaining high photovoltaic performance of the solar cell.

The invention relates to a water photovoltaic thin film device based on titanium dioxide and a preparation method and application thereof, and the preparation method comprises the following steps: transversely coating two conductive carbon pastes on a flexible substrate through a blade coating method, and drying to form two parallel wires to obtain a substrate with a wire layer; longitudinally coating a layer of titanium dioxide slurry on the substrate with the wire layer, wherein the titanium dioxide slurry is formed by mixing titanium dioxide nano powder, a binder and an organic solvent; and drying to form a titanium dioxide film, thereby obtaining the water photovoltaic film device based on titanium dioxide. The water photovoltaic thin film device based on titanium dioxide can generate continuous water photovoltaic electric energy through water evaporation driving, a self-driving signal source is provided for the device, so that dependence on an external power supply is avoided, meanwhile, as an N-type semiconductor, the conductivity of the device is highly sensitive to the environmental oxygen concentration, and by measuring an electric signal spontaneously generated by the device, the oxygen concentration of the environment can be accurately measured. The oxygen concentration of the environment can be indirectly sensed with high sensitivity without an external power supply.

This invention discloses an electromagnetic field localization enhancement structure based on a double-layer film and side-polished perovskite optical fiber, comprising: a side-polished single-crystal organometallic perovskite optical fiber, a single-layer graphene film, an alumina film, and a titanium dioxide film; the single-layer graphene film, alumina film, and titanium dioxide film are sequentially disposed above the polished surface of the side-polished single-crystal organometallic perovskite optical fiber; the interaction between the fiber mode and the single-layer graphene in the side-polished single-crystal organometallic perovskite optical fiber is achieved based on the double-layer film structure composed of the alumina film and titanium dioxide film with successively increasing refractive indices, thereby realizing the localization enhancement of the electromagnetic field at the graphene; the localization enhancement effect of the electromagnetic field at the graphene is modulated by controlling the thickness of the double-layer film of alumina film and titanium dioxide film deposited on the side-polished single-crystal organometallic perovskite optical fiber with transferred single-layer graphene. This invention enables efficient interaction between the transmitted optical field in the fiber core and two-dimensional materials, providing a framework for integrating high-performance photodetectors, sensors, and nonlinear devices on perovskite optical fibers.

The invention relates to a medicine film coating, in particular to a titanium dioxide-free white film coating formula. In the formula of the titanium dioxide-free white film coating, the dry powder formula of the white film coating comprises the following components in percentage by weight: 20-70% of a film material, 1-30% of a plasticizer, 20-50% of an opacifying agent, 0-50% of an anti-sticking agent and 0-10% of a common auxiliary agent for improving the coating effect. According to the white film coating formula disclosed by the invention, the components with specific requirements are mixed according to a certain proportion, so that the whiteness of the obtained white film coating is the color and luster shown after the components in the formula interact; in the formula, the film-forming polymer can form a crystal region interface beneficial to light scattering, and the calcium carbonate with specific morphology and particle size is combined, so that the transmission of light can be greatly reduced, and finally a product of which the whiteness is basically equivalent to that of the titanium dioxide-containing film coating is obtained, so that the product can meet the ever-increasing health requirements of people and improve the brand competitiveness.

The invention discloses a method for regulating and controlling crystallization of a perovskite thin film based on a potassium nitrate modified buried interface. The method comprises the following steps: dissolving potassium nitrate in DMSO; coating a DMSO solution of potassium nitrate on the titanium dioxide film by adopting a spin-coating method, and annealing to obtain a potassium nitrate buried interface modification layer; and preparing a perovskite layer on the potassium nitrate buried interface modification layer to obtain the potassium nitrate modified perovskite thin film. The prepared potassium nitrate modified perovskite thin film can be further used for preparing a perovskite photovoltaic device. According to the invention, potassium nitrate is used as a bottom-buried interface modification layer, in the annealing crystallization process of the perovskite film, perovskite crystallization can be delayed, a glossy perovskite film with a large grain size is formed, defects at the grain boundary of the perovskite film and in the crystal are passivated, the transmission capability of charges at the bottom-buried interface is improved, and the performance of a photovoltaic device is improved. The method is low in cost and suitable for large-scale perovskite solar photovoltaic devices, especially for preparation of perovskite cells.

The application discloses a kind of high-performance micro-nano composite material and preparation method thereof, it is related to the field of nano composite material.The application is first carbon source and silicon source are mixed, add pore forming agent to form porous preform, then use high-power microwave heating, prepare network-like silicon carbide fiber.The application is first used grid-like silicon carbide fiber, silicon carbide powder, mixed and dissolved to form preform, use nano zirconium dioxide as modified material, then add titanium dioxide gel, titanium dioxide gel enters pore, solidification and crystallization will occur to titanium dioxide when sintering, simultaneously form a layer of titanium dioxide film in sintering process, increase bonding strength, improve material performance.The micro-nano porous composite ceramic prepared by the application uses network-like silicon carbide fiber as skeleton, connects silicon carbide powder and nano zirconium oxide, and forms double-layer ceramic structure by compounding titanium dioxide, with high carrier strength, strong toughness, and three-dimensional communication, internal structure is stable under high impact, and performance is superior.

The invention discloses a titanium oxide nanosheet photoelectric film material and a preparation method thereof, and belongs to the technical field of functional films. According to the preparation method, the oxygen content controllable pulse radio frequency temperature control reactive sputtering technology is adopted, self-organization growth and amorphous stable regulation and control of the titanium oxide nanosheets are achieved at the temperature of 50-100 DEG C, and therefore the titanium oxide thin film material of the amorphous porous layered nanosheet island-shaped structure is obtained. The titanium oxide nanosheet photoelectric thin film material prepared by the invention has an amorphous porous layered nanosheet island-shaped tissue structure, and the thin film material is endowed with excellent optical modulation performance and electrochemical energy storage performance, so that the thin film material can synchronously realize storage and release of electric quantity in an electrochromic process; and the energy storage state can be visually represented through color change, and the method is suitable for the fields of photoelectric multifunctional devices, intelligent dimming energy storage devices and other related advanced energy devices.

The utility model relates to the field of sewage treatment equipment, in particular to a rural sewage treatment device which comprises a base, a purification assembly is arranged on the surface of the top of the base, and a limiting assembly is arranged on the surface of the purification assembly. After rural sewage is collected by the water storage tank, the annular column on the surface of the first trapezoidal plate and the water bottle form a lower siphon auxiliary device, the water bottle is communicated with the water storage tank through the guide pipe, and hydrostatic pressure difference is formed by the height difference between the water storage tank and the first filter tank; high-position water generates a siphonic effect through a U-shaped pipe structure, unpowered self-circulation water guiding is achieved, meanwhile, common earthworm feces and carbon are mixed through the second filtering box and the filtering tank to serve as a filtering material, the filtering effect is improved, a titanium dioxide film deeply removes bacteria through photocatalysis under the condition of ultraviolet light illumination, and the water quality is improved. A ferroferric oxide particle layer assists activated carbon to adsorb heavy metal ions, and the angle of the rotating frame is conveniently adjusted through a connecting cylinder and a second convex column.

The invention discloses a thin film device for enhancing photocatalytic performance based on a water photovoltaic effect and a hydrogen production method thereof. The thin film device comprises a PVC substrate layer; the plurality of carbon paste wires are arranged at intervals and cover the PVC substrate layer; and the titanium dioxide film is arranged in a continuous area on the PVC substrate layer and covers all the PVC substrate layer and the at least two carbon paste wires in the continuous area. The PVC is used as the substrate layer, the carbon paste wire is formed on the substrate layer, then the titanium dioxide thin film is communicated with the carbon paste wire to form the thin film device for enhancing the photocatalytic performance based on the hydro-voltaic effect, and the device can achieve in-situ coupling of the hydro-voltaic effect and the photocatalytic process under the evaporation and illumination conditions, so that the hydrogen production efficiency is improved.

To provide a technique for forming a film of rutile-type titanium oxide on the surface of a synthetic resin material without deforming or dissolving the synthetic resin material. The method for forming a rutile titanium oxide film is a method for forming a thin film of rutile titanium oxide on a target surface of an object, and includes a power supply step of supplying power at a predetermined frequency N to a target T containing Ti, wherein the instantaneous power density of the power in the power supply step is 1.1 kW / cm. 2 The average power density is 5.8 W / cm 2 The following is the result.

According to the SPR refractive index sensor based on the double-C-type microstructure optical fiber and preparation of the SPR refractive index sensor, the sensor is of a cylinder structure, the cross section of the cylinder is of a double-C-type quasi-circular structure, and the SPR refractive index sensor comprises a silicon dioxide substrate, air circular holes, a gold thin film layer and a titanium dioxide thin film layer; the silicon dioxide substrate is of a double-C-shaped quasi-circular structure, the double-C-shaped quasi-circular structure is formed by polishing and grinding a section of C-shaped notch on each of two opposite side surfaces of the silicon dioxide substrate, four air circular holes are formed in the silicon dioxide substrate and are uniformly distributed in the double-C-shaped quasi-circular structure in a square shape, the metal thin film layer is attached to the outer side of the C-shaped notch, and the titanium dioxide thin film layer is attached to the outer side of the metal thin film layer. During preparation, the sensor is formed by drawing, drilling, stacking and assembling, stretching and polishing deposition in sequence, and the prepared sensor has good sensing application performance. The preparation method is simple in process flow, provides an important theoretical basis for the design of the microstructure optical fiber sensor, and has a good application prospect in the fields of biomedical detection, chemistry and chemical engineering analysis and the like.

This invention provides an antimony-based solar cell and its fabrication method, belonging to the field of solar cell technology. The fabrication method of the antimony-based solar cell includes: after forming an electron transport layer on a conductive substrate and before forming an antimony-based light-absorbing layer on the electron transport layer, performing a surface modification treatment on the electron transport layer, wherein the electron transport layer comprises a titanium dioxide thin film; the surface modification treatment includes: coating the surface of the electron transport layer with a thiamine solution, wherein the thiamine solution comprises a solution formed by dissolving a sulfur source in an amine solvent; and annealing the electron transport layer coated with the thiamine solution in air to obtain the surface-modified electron transport layer. This invention, through the synergistic effect of the sulfur source and amine molecules, reduces the oxygen vacancy defect density on the surface of the titanium dioxide thin film, enabling the fabrication of a highly crystalline, low-defect-concentration antimony-based thin film on the surface-modified electron transport layer, thereby improving the photoelectric performance of the antimony-based solar cell.

The application provides an antimony-based solar cell and a preparation method thereof, and belongs to the technical field of solar cells. The preparation method of the antimony-based solar cell comprises the following steps: after forming an electron transport layer on a conductive substrate and before forming an antimony-based light absorption layer on the electron transport layer, performing surface modification treatment on the electron transport layer, wherein the electron transport layer comprises a titanium dioxide film; the surface modification treatment comprises the following steps: coating a thiamine solution on the surface of the electron transport layer, wherein the thiamine solution comprises a solution formed by dissolving a sulfur source in an amine solvent; and performing annealing treatment on the electron transport layer coated with the thiamine solution in an air environment to obtain the surface-modified electron transport layer. Through the synergistic effect of the sulfur source and the amine molecules, the surface oxygen vacancy defect density of the titanium dioxide film is reduced, the antimony-based film with high crystallinity and low defect concentration can be prepared on the surface-modified electron transport layer, and the photoelectric performance of the antimony-based solar cell is improved.

The present application relates to a modified titanium-tantalum alloy material and a surface modification method and application. The modified titanium-tantalum alloy material comprises a titanium-tantalum alloy substrate, and a titanium dioxide film is attached to the surface of the titanium-tantalum alloy substrate. The present application also provides a surface modification method of the modified titanium-tantalum alloy material, comprising the following steps: placing a titanium-tantalum alloy substrate in a mixed solution containing ammonium fluoride, hydrogen peroxide, isopropyl alcohol and water, and performing a hydrothermal reaction; placing the titanium-tantalum alloy substrate after the hydrothermal reaction in an alkaline solution for soaking, so as to perform fluorine ion replacement, and cleaning to obtain an intermediate product; and performing low-temperature plasma treatment on the intermediate product in a mixed atmosphere of argon and oxygen, to obtain a titanium-tantalum alloy with a biologically active titanium dioxide film attached to the surface. The present application provides the application of the modified titanium-tantalum alloy material as a biomedical material. The present application solves the problem that the existing titanium-tantalum alloy material has low biological activity as a biomedical material.

This invention relates to the field of organic photonics and laser device technology, specifically disclosing a laser based on a mesoporous titanium dioxide substrate and its fabrication method. The laser comprises a transparent substrate, a mesoporous titanium dioxide thin film on the substrate, and an organic conjugated polymer gain medium layer on the titanium dioxide thin film. The mesoporous titanium dioxide layer is fabricated by spraying or spin coating, utilizing its disordered porous structure to provide light scattering feedback. Low-threshold random laser emission can be achieved under optical pumping without the need for a traditional precision resonant cavity. This device features a simple structure, low fabrication cost, good process compatibility, and applicability to polymer gain media with various emission wavelengths, providing a new technical path for realizing low-cost, easily integrated electrically pumped organic lasers.

The invention relates to the technical field of biosensors, and particularly discloses a DNA-modified titanium dioxide film sensor as well as a preparation method and application thereof. The method comprises the following steps: plating gold on a titanium dioxide nanotube prepared by an anodic oxidation method, modifying a DNA probe under the action of a gold sulfhydryl bond, obtaining electrons by taking a platinum electrode as a cathode and losing electrons by taking metal titanium as an anode in an electrolyte in an oxidation process, and oxidizing under external voltage. Due to the existence of the nano pore channels, under the illumination condition, photon-generated carriers can directionally migrate along the surface potential in the direction of the pore channels and drive ions in the pore channels to directionally move; the specific recognition effect of the surface probe and the target causes the change of the surface charge and changes the surface potential, so that a measurable electric signal is generated, and universal target detection and multi-target simultaneous in-situ detection can be realized. The method provided by the invention has great significance in early detection, screening and treatment of prostate cancer.

To remove a titanium oxide film provided on the surface of a substrate.SOLUTION: A method of removing a titanium oxide film on a surface of a substrate includes supplying a mixed gas containing a hydrogen fluoride gas and an ammonia gas to a surface of the titanium oxide film to cause a chemical reaction between the titanium oxide film and the mixed gas, thereby generating a gaseous reaction product from the titanium oxide film and removing the gaseous reaction product from the surface of the substrate, and heating the substrate to remove a deposit adhering to the substrate when the reaction product is generated.SELECTED DRAWING: Figure 5

The invention discloses an environment-friendly colorful pearlescent pigment and a preparation method thereof, and belongs to the technical field of pigment synthesis. According to the pigment, a new aliphatic amine structure-directing agent is introduced into a base material and a solvent and mixed to prepare slurry, the slurry is placed in a multi-frequency ultrasonic reaction device, and an organic titanium source is added into the slurry for reaction. The organic titanium source replaces titanium tetrachloride, so that the hydrolysis loss of the titanium source can be effectively reduced, the structure-directing agent can effectively reduce the interface free energy of a reaction system, and a tighter and smoother titanium dioxide film is formed, so that high color saturation is realized. The mass and heat transfer efficiency of the reaction is enhanced by the multi-frequency ultrasonic reactor, so that the collision frequency among monomer molecules is increased, and the reaction rate is greatly improved. Compared with a traditional method, the method has the advantages that a buffer solution does not need to be continuously used for adjusting the reaction pH value in the reaction process, the operation is safe and simple, organic solvents such as methanol and ethanol can be recycled after the reaction is finished, no waste water or waste salt is discharged, and the purposes of environmental protection, energy conservation and consumption reduction are really achieved.

The application discloses an epitaxial growth of 100 square centimeter level vertical arrangement mesoporous single crystal titanium dioxide film and a preparation method thereof, and relates to the field of functional mesoporous material preparation. The application aims to solve the problem of incompatibility of atomic scale single crystal growth and mesoscopic scale self-assembly dynamics. The method is as follows: a solution-based epitaxial growth strategy is adopted, a stable F127 / TiO2 composite micelle formed in advance is used as a building block, directional self-assembly is carried out on an FTO glass substrate, and single crystal epitaxial growth is realized synchronously, so that the mesoscopic structure formation and single crystal growth process are considered. The film prepared by the application has a 001 preferred orientation single crystal rutile skeleton and vertically arranged mesoporous channels, and the thickness, pore size and crystallinity can be accurately controlled. The film has enhanced charge and substance transport performance, and has application prospects in the fields of photoelectrocatalysis, photovoltaic and sensing.

The application discloses an electrochromic film with super-long power-off coloring memory time and a preparation method thereof. The film is a titanium dioxide and organic small molecule composite film. The test is completed under a three-electrode system. The three-electrode system comprises a working electrode, an electrolyte, a counter electrode and a reference electrode. The working electrode is a conductive substrate with an electrochromic layer, and the electrochromic layer is a titanium dioxide and organic small molecule composite film. The electrolyte is a 1M LiClO4 / PC solution. The counter electrode is a Pt electrode. The reference electrode is an Ag / AgCl electrode. After the organic small molecules are doped on the titanium dioxide film, the film has excellent performance in cycle stability and coloring efficiency, has greater optical modulation capacity under the same voltage, and has quite excellent performance in power-off coloring memory time, thereby achieving the purpose of energy saving.

The utility model relates to the technical field of wastewater treatment, and discloses a photocatalytic denitrification device which comprises a reaction tank, a catalytic cylinder is arranged in the reaction tank, the top of the catalytic cylinder is an open end and is filled with a photocatalyst, a gap is reserved between the catalytic cylinder and an inner cavity of the reaction tank, a first-stage photocatalytic mechanism is arranged in the catalytic cylinder, and a second-stage photocatalytic mechanism is arranged in the first-stage photocatalytic mechanism. And a secondary photocatalysis mechanism is arranged between the catalysis cylinder and the reaction tank. Wastewater is subjected to a primary photocatalysis reaction in the catalysis tank through the primary photocatalysis mechanism and then enters the reaction tank to be subjected to secondary photocatalysis through the secondary photocatalysis mechanism, and in the secondary photocatalysis process, the volume of the wastewater is thinned when the wastewater flows due to separation of the photocatalysis plates, so that the light absorption thickness of liquid is reduced, and the light absorption efficiency is improved. According to the invention, the ultraviolet light is introduced into the wastewater, so that the propagation distance of the ultraviolet light in the wastewater is increased, and illumination can more effectively penetrate through the wastewater, thereby improving the activation efficiency of the titanium dioxide film in the wastewater, ensuring the maximum activity of the photocatalyst and greatly improving the wastewater denitrification effect.

The present invention provides a laminate having a titanium oxide film that does not damage the substrate surface and has excellent manufacturing efficiency and anti-reflective performance, a method for manufacturing the same, and an anti-reflective film. [Solution] The laminate 1 comprises a substrate 2, a protective layer 3, and a titanium oxide film 4 in order toward one side in the thickness direction. The titanium oxide film 4 contains crystals in which a group of Ti2O3 diffraction spots appear in the electron diffraction pattern observed with a transmission electron microscope, and its refractive index when incident with light of a wavelength of 550 nm is greater than 2.50 and less than or equal to 2.80.

The invention belongs to the technical field of diamond grinding wheels, and particularly relates to a bronze diamond grinding wheel which is prepared from, by weight, 42 parts of diamond micro-powder, 29 parts of copper powder, 7 parts of tin powder, 5 parts of cobalt powder, 6 parts of zinc powder, 6 parts of nickel powder and 5 parts of iron powder. A preparation method of the bronze diamond grinding wheel comprises the following steps that firstly, titanium dioxide sol is prepared; cleaning the diamond particles; the diamond particles are dried, the diamond is soaked in titanium dioxide sol, so that the surfaces of the diamond particles are coated with titanium dioxide films, the performance of the diamond is greatly improved, the strength of the diamond is improved, and the abrasion resistance of the grinding wheel is improved by adding copper powder, tin powder, cobalt powder, zinc powder, nickel powder and iron powder. And through the preparation mode of hydraulic machine forming and vacuum condition sintering, the technological process is short, the equipment cost is low, and compared with similar processes, the prepared diamond grinding wheel is good in quality and beneficial to industrial production.

This invention provides a multifunctional memristor based on a P3HT / TiO2 heterojunction and its fabrication method. The memristor includes a substrate and a top electrode arranged sequentially from bottom to top, and also includes a titanium dioxide thin film and a P3HT thin film (i.e., a poly(3-hexylthiophene) thin film). The titanium dioxide thin film and the P3HT thin film are disposed between the substrate and the top electrode, and the titanium dioxide thin film is disposed on the surface of the substrate. This multifunctional memristor based on a P3HT / TiO2 heterojunction and its fabrication method have advantages such as excellent memory storage effect, enhanced fast response capability, and enhanced environmental adaptability, and low power consumption, which can significantly reduce production costs and improve production efficiency.

The present invention provides a titanium dioxide dispersion, a method for producing the same, a titanium dioxide film, and a titanium dioxide electron transport layer, all of which have a low environmental impact and can reduce manufacturing costs. [Solution] The present invention provides a method for producing a titanium dioxide dispersion, comprising: a first step of obtaining titanium hydroxide by hydrolysis of a titanium compound; a second step of preparing a peroxotitanic acid complex solution with the titanium hydroxide using hydrogen peroxide and ammonia; a third step of adding a primary hydroxycarboxylic acid to the peroxotitanic acid complex solution to obtain a water-soluble titanium complex solution; and a fourth step of hydrothermally treating the water-soluble titanium complex solution to obtain a primary titanium dioxide dispersion.