101 results about "Dye doped" patented technology

A method for preparing transparent mesostructured inorganic / block-copolymer composites or inorganic porous solids containing optically responsive species with selective optical, optoelectronic, and sensing properties resulting therefrom. Mesoscopically organized inorganic / block copolymer composites doped with dyes or complexes are prepared for use as optical hosts, chemical / physical / biological sensors, photochromic materials, optical waveguides, tunable solid-state lasers, or optoelectronic devices. The materials can be processed into a variety of different shapes, such as films, fibers, monoliths, for novel optical and sensing applications.

Nonlinear optical filters and associated methods. In a representative embodiment, a nonlinear optical filter includes a grating and a dye-doped polymer layer coupled to the grating. The dye-doped polymer layer may include ionic self-assembled layers. An associated method includes: providing a nonlinear filter comprising a grating and a dye-doped polymer layer coupled to the grating, directing an input broadband optical wave upon the filter, and backward diffracting the broadband optical wave from the grating as an output narrowband optical wave. The output narrowband optical wave may include a second harmonic beam.

A field emission device having improved properties and which finds use in display devices, such as a flat panel displays. Known devices and displays suffer from problems such as complexity of fabrication and limited color gamut. The present device provides a field emission backplate which is made from a substantially semiconductor based material and has a plurality of grown tips. The device also includes at least one electro-luminescent or photo-luminescent material having a fluorescent material such as a fluorescent dye doped material chemically attached thereto.

The invention belongs to the technical field of detection, and particularly relates to a method for manifesting latent fingerprints. The invention provides the method for manifesting the latent fingerprints. A magnetic brush is used to attract magnetic powder; the powder forms a 'magnetic powder ear' under the action of magnetic force; and the latent fingerprints on the surfaces of A4 paper, sheet glass, plastic bottles, pop-top cans, sheet copper, aluminum foils, tables or experiment tables can be manifested by using the tip of the powder ear to slightly brush various object surfaces printed with the latent fingerprints. The method is based on magnetic ferroferric oxide nano-powder and utilizes an phase reversal microemulsion polymerization method to prepare fluorescent magnetic silica gel spheres; and the method jointly coats magnetic granular ferroferric oxide and dye molecules in silicon dioxide microspheres by utilizing the hydrolysis of TEOS under alkaline conditions to perform one-step synthesis of magnetic silica monodisperse gel spheres and dye-doped magnetic fluorescent silica gel spheres to obtain magnetic fluorescent multi-functional powder, can be applied to more conditions and ranges, and has simple operation and no toxic or side effect.

The invention belongs to the technical field of nano biological materials and particularly relates to a single-emission up-conversion nano fluorescent probe and a synthetic method thereof. The fluorescent probe is a nanocrystal with a structure comprising a core layer and three shell layers and comprises an up-conversion luminescence center core layer, an inert shell layer, a silicon dioxide shell layer and a dye-doped silicon dioxide shell layer; an active ion doped rare earth nanocrystal is arranged at the up-conversion luminescence center, and the inert shell layer completely covers the luminescence core; the silicon dioxide shell layer can avoid fluorescence resonance energy transfer between the up-conversion luminescence center and dye; the dye-doped silicon dioxide shell layer is used for removing unwanted up-conversion emission peaks and reserving specific up-conversion emission peaks, and single-emission up-conversion fluorescence is realized. By means of the probe and the method, multiple signal modules can be detected in situ simultaneously, and further, the detection sensitivity and the accuracy are improved. The fluorescent probe has a broad application prospect in the aspects of protein expression, high throughput screening of biological samples, multi-channel biological detection, disease diagnosis and the like.

The present invention describes a fluorescent dye doped polymer based optical wave-guide structure. The described polymers can be used to fabricate a range of display elements and illumination systems which work without the use of external electrical power. This is due to the process of the fluorescent dyes absorbing ambient light and then subsequently emitting light which is conducted by the polymer host material to a point where it is emitted. The emitted light can be of a range of colours depending upon the type of dye that polymers are doped with. There is a constant contrast between the light power flux emitted for the wave-guide structure and the light power flux of the ambient light. There is also provided a method in which a dielectric stack mirror layer fabricated on the surface of the polymer which can be used to improve the efficiency and the contrast of those optical elements.

The invention discloses a phosphorescent organic electroluminescent device, and the device comprises a hole transmission layer, a light emitting layer and an electron transmission layer, wherein the hole transmission layer, the light emitting layer and the electron transmission layer are stacked sequentially. The light-emitting layer is of a double-layer structure which consists of a hole transmission material layer and an electron transmission material layer. The hole transmission material layer is disposed between the hole transmission layer and the electron transmission material layer, and the electron transmission material layer is disposed between the hole transmission material layer and the electron transmission layer. A contact interface of the hole transmission material layer and the electron transmission material layer forms a laser-based composite. The hole transmission material layer comprises a main material, and the main material is a material with the capability of hole transmission. The electron transmission material layer comprises a main material and phosphorescent dye doped in the main material, wherein the main material is a material with the capability of electron transmission. The phosphorescent doped density is reduced through the laser-based composite, and the long service life and high efficiency can be maintained.

The invention provides a dye-doped liquid crystal microsphere temperature sensor and a manufacturing method therefor. A cholesteric phase liquid crystal solution is doped with a fluorescent dye DCM, and the mixed solution is injected into a liquid to be measured via a tapered capillary microtubule, and a liquid microsphere cavity is formed. The fluorescent dye in a liquid crystal microsphere emits fluorescent light when being excited by a 532 nm laser pulse; high quality echo wall mode laser emission is realized due to restriction effects of a micro-cavity, and a spectrometer is used for recording laser spectrums. When ambient temperature changes slightly, change of a liquid crystal refractive index can cause change of a laser wavelength, and therefore spectrum drift can be caused; high sensitivity temperature sensing can be realized. The invention puts forward the brand new high sensitivity temperature micro-sensor device based on an optical micro-resonator cavity structure and a unique optical material.

Under one aspect, a phase contrast imaging system includes a coherent light source emitting a coherent beam directed toward a sample area; a lens arranged to collect at least part of the beam from the sample area; an element Fourier transforming the collected beam in a Fourier plane; a liquid crystal cell in the Fourier plane that transmits at least part of the transformed beam, wherein the cell includes liquid crystal molecules having a phase transition temperature, and wherein at temperatures exceeding the phase transition temperature, light transmitted through the liquid crystal molecules obtains a different phase than light transmitted through the liquid crystal molecules obtains at temperatures below the phase transition temperature; and an element inversely Fourier transforming the transmitted beam to provide an image. Part of the transformed beam has an intensity sufficient to heat a portion of the liquid crystal molecules above the phase transition temperature.

The invention relates to a preparation method of a phosphorescent diode with an electronic transmission layer doped with lithium fluoride. The phosphorescence diode has a eight-layer planar structure that comprises an anode layer, a hole transmission layer, a luminescent layer I, a luminescent layer II, a hole barrier layer, an electronic transmission layer, an electron injection layer and a cathode layer; thris (2-phenylpyridine) iridium is utilized to carry out phosphorescent dye doping on the luminescent layer I and the luminescent layer I so as to form a double luminescent layer; and lithium fluoride is utilized to carry out doping on the electronic transmission layer. The preparation of the phosphorescent diode is carried out in a vacuum vapor plating furnace, wherein the vacuum degree is less than or equal to 0.0004Pa and the temperature in the furnace is from a value by adding 25 DEG C with 2 DEG C to a value by subtracting the 2 DEG C from the 25 DEG C. Processes of heating and sublimation of vapor plating materials, form transformation, vapor deposition and film growth are carried out so as to form a dual-luminescent layer phosphorescent diode with the electronic transmission layer doped with the lithium fluoride, wherein the phosphorescent diode has a thickness of 261.2 nm. Besides, an emission wavelength is 516 nm; a color coordinate is expressed as that x is equal to 0.3151 and y is equal to 0.6054; green lights is emitted; and a maximum value of current efficiency is 39. 03cd / A. Moreover, compared with the prior art, the technology employed in the invention enables luminous efficiency of the diode to be improved by 54%; an initial brightness of a packaging device is 500cd / m <2>; and the device service life is 320h; and the service life of the diode can be improved by 3.57 times.

The invention provides a reflection type liquid crystal display device. The reflection type liquid crystal display device comprises an upper substrate, a lower substrate, an upper orientation layer, a lower orientation layer, a liquid crystal composition and a reflecting material, wherein the liquid crystal composition is clamped between two orientation layers and comprises dye, a liquid crystal compound and a chiral agent, the reflecting material is located on the outer surface of the lower substrate, and the color of the liquid crystal composition is complementary with the color of the reflecting material. The invention provides a novel reflection type display mode. Dye-doped liquid crystals are used for displaying, usage of polaroids is abandoned, and the problem of the low reflectivity is fundamentally solved. Simultaneously, polaroids are not used, and brightness enhancement films are not required to be used for improving the reflectivity, so that the cost is reduced greatly. According to the reflection type liquid crystal display device, dye-doped liquid crystals are arranged between the upper substrate and the lower substrate, polaroids which are attached to surfaces of transparent substrates of traditional ordinary liquid crystal displayers are removed, the structure is simple, simultaneously, the light utilization ratio is greatly improved, and the reflection type liquid crystal display device has the advantages of being high in reflectivity, capable of achieving full-view display, low in cost and simple to produce and manufacture.

An efficient dye doped solar cell that improves upon the conventional dye-sensitized solar cells known within the art. The present inventive dye doped solar cell and its method of manufacture completely eliminate an electrolyte component common to conventional solar cells thereby removing numerous complications found in conventional dye doped cells such as inconsistent reproducibility and safety issues due to leakage of the electrolyte component. The dye doped solar cell of the present invention provides a novel replacement for the conventional electrolyte layer that provides significant improvements in both the safety and function of the inventive dye doped solar cell while eliminating the troublesome electrolyte component that is required in the conventional dye-sensitized doped solar cells known within the art.

The invention provides an organic light emitting diode, which comprises a substrate, a first electrode, a second electrode and an organic light emitting unit, wherein the first electrode is arranged on the substrate; the second electrode is arranged on the first electrode; the organic light emitting unit is arranged between the first electrode and the second electrode; the organic light emitting unit comprises a red-light phosphorescent dye doped hole-transmission material light emitting layer, a spacing layer and a green-light phosphorescent dye doped blue-light electronic transmission light emitting layer, which are sequentially laminated; and the spacing layer consists of a hole transmission material and an electronic transmission material. The light emitting unit is provided with the red-light phosphorescent dye doped light emitting layer, the spacing layer and the green-light phosphorescent dye doped light emitting layer, and the spacing layer contains the electronic transmission material and the hole transmission material, so that a compounded area of the hole and electron is enlarged, exciton can be adequately utilized, and the organic light emitting diode has high efficiency, high stability and high color rendering index.

The invention provides a preparation method of silicon dioxide nano particles mixed with a hydrophobic dye, and belongs to the field of luminescent nano material. A surfactant is used to form micelles which are used for dispersing the hydrophobic dye in reaction solution uniformly; silicon dioxide nano particles are formed through the hydrolization and the condensation of organosilicon; the micelles, in with the hydrophobic dye is dissolved, is involved in the formation of silicon dioxide nano particles, thus preparing the silicon dioxide nano particles mixed with the hydrophobic dye. The process of the preparation method is simple; the cost is low; the mixing efficiency is high; the pollution resulting from organic solvents in the microemulsion method is avoided; the dye is effectively prevented from leaking during postprocessing and depositing because of strong interaction; the resultant luminescent nano particles are monodisperse and are uniform in size; the dye is mixed uniformly among different particles with high chemical stability and colloid stability; the particles can be applied in the fields of biological detectors, markers, biological sensors and so on after the surfaces of the particles are further functionalized.

The invention discloses a preparation method of a dye-doped liquid crystal microcapsule, and belongs to the technical fields of fine chemical engineering and material science. The dye-doped liquid crystal prepared by the method has a multilayer structure, and the outer dye-doped liquid crystal and a polymer shell layer which are used as a chromogenic layer and the core dye-doped liquid crystal microcapsule undergo subtractive color matching, and the chromogenic layer is also used as a protection layer to protect the inner dye-doped liquid crystal from being polluted by an external environment.The liquid crystal microcapsule prepared by the method has the advantages of bright and variable color, low driving voltage, good resistance to solvents and water, keeping of the original color performance after processing treatment, meeting of the customized and diverse chromogenic demands of liquid crystals in intelligent textiles, and broad application prospect.

The invention discloses an organic electroluminescent device. The device comprises a light emitting layer. The light emitting layer comprises a main body material and light emitting dye doped in the main body material. The main body material is a thermal activation delayed fluorescence material. The light emitting dye is the organic free radical light emitting material. According to the invention, the delayed fluorescence material is used for replacing the traditional fluorescence main body material, and the organic free radical light emitting materials serves as the objective material, so excellent energy transmission can be achieved; driving voltage of the device is reduced; and light emitting efficiency of the device is improved.

The invention relates to a novel method and a model for improving the modulation depth of a dye doped organic thin film all-optical switch. The method has the following main characteristics that: two linearly polarized light beams which are orthogonal and have a phase difference of 180 degrees are used to excite the switch in an alternating way to speed up a restoration process of the switch, so as to increase the speed and the modulation depth of the switch and increase the speed and modulation depth of the all-optical switch at low exciting power at the same time. The invention also provides a novel all-optical switch model based on the novel method, namely, an orthogonal linearly polarized light excited dye doped organic thin film all-optical switch module. The method has the advantages that: the response speed of the all-optical switch is increased obviously; the modulation depth of the all-optical switch under conditions of a low exciting light power and a high speed switching frequency is obviously improved; and compared with the prior all-optical switch, the orthogonal linearly polarized light excited all-optical switch has a simpler optical path and adjusting method.

A gain medium for producing a light emission in a laser. The gain medium comprises a dye-doped polymer nanoparticle matrix having an absolute value of dn / dT less than an absolute value of dn / dT of its dye-doped polymer matrix.

The invention discloses a dye adulteration nematic liquid crystal tunable laser and a preparation method thereof. The dye adulteration nematic liquid crystal tunable laser comprises an upper base plate and a lower base plate, wherein the upper base plate and the lower base plate are respectively plated with multiple layers of titanium dioxide and silicon dioxide dielectric films in alternation mode, alignment layers are respectively arranged on the multiple layers of the titanium dioxide and silicon dioxide dielectric films on the upper base plate and the lower base plate, and the alignment layers rub the multiple layers of the titanium dioxide and silicon dioxide dielectric films in anti-parallel mode so as to form a liquid box. The thickness of the liquid box is 4mm, and the liquid box is filled with dye adulteration nematic liquid crystal prepared from nematic liquid crystal SLC12V620, chiral agent S8-11 and dye DCM. Solid Nd:YAG laser light which is 5HZ in pulse frequency and 532nm in wave length is used as a pump light source, and the incidence angle of the laser light is 20 degrees. The dye adulteration nematic liquid crystal tunable laser is small in line width, improves radiation laser intensity, improves pumping efficiency, and saves energy, and especially the dye adulteration nematic liquid crystal tunable laser is stable in work and easy to tune.

The present invention provides a color liquid crystal display panel and a manufacturing method thereof. The color liquid crystal display panel includes: a first substrate (2), a second substrate (3), and dye-doped liquid crystal layers (4) hermetically sealed between the first substrate (2) and the second substrate (3). The dye-doped liquid crystal layers (4) each include a liquid crystal material, a chiral dopant, and at least one dichroic dye. Each of the dichroic dyes absorbs a light of a predetermined wavelength range. The color liquid crystal display panel and the manufacturing method thereof according to the present invention add at least one dichroic dye in a liquid crystal material so as to use selective absorbability of the dichroic dye with respect to visible lights to adjust light intensity and also to achieve color displaying through collaboration of a color filter and the dichroic dye, whereby there is no need to include a conventionally used polarizer so as to reduce the manufacturing cost of the color liquid crystal display panel, also reduce the requirement for backlighting brightness, enhance light transmittal and optical efficiency, and thus lower down energy consumption of the operation of a color liquid crystal display.

A surface display unit incorporates an opaque screen (180) and an image panel (110). The opaque screen is disposed on the front side of the image panel which provides an optical image. The opaque screen generally hides the image panel while the surface display unit is not in use. When the image panel is activated to provide an optical image, the opaque screen provides a suitable level of transparency so that a viewer can observe the optical image with sufficient clarity. The opaque screen can provide optical enhancement, decorative texture, and / or mechanical support and include antiglare, anti-reflective, and anti-scratch films (140, 150, 160). The opque screen can be a laminated polymer film, an electrochromic or photochromic system, or a switchable dye doped liquid crystal material.

The present invention provides a color liquid crystal display panel, which includes: a plurality of layers of liquid crystal cells (2) that are arranged parallel to each other and bonding members (8) bonding the plurality of layers of liquid crystal cells (2). Each of the liquid crystal cells (2) includes a thin-film transistor substrate (20), a package substrate (30), and a dye-doped liquid crystal layer (40) sealed between the thin-film transistor substrate (20) and the package substrate (30). The dye-liquid crystal layer (40) includes a liquid crystal material, a dichroic dye, and a chiral reagent. The dichroic dye of each of the liquid crystal cells (2) absorbs light of a predetermined range of wavelength. The plurality of layers of liquid crystal cell (2) respectively absorbs lights of different ranges of wavelength. The color liquid crystal display panel requires no conventionally used polarizer and color filter, so that the manufacture cost of and the requirement for backlighting brightness by the liquid crystal display panel can both be reduced.

The invention provides a liquid-crystal tunable laser with echo wall mode and distribution feedback emission and a preparing method thereof, and belongs to the technical field of tunable lasers. The liquid-crystal tunable laser with echo wall mode and distribution feedback emission comprises a capillary tube glass matrix, light-control alignment films, cholesteric liquid crystals and laser materials. The light-control alignment films are arranged on the inner side of the capillary tube glass matrix and are arranged in an axial-symmetry mode, and the cholesteric liquid crystals and the laser materials are arranged in defined space. According to the liquid-crystal tunable laser, laser emission of dye-doped cholesteric liquid crystals is achieved in the capillary tube glass matrix, and emission considers distribution feedback laser emission and echo wall mode laser emission at the same time; structural parameters such as the inner diameter of a capillary tube, the thickness of the light-control alignment films and the dye-doped cholesteric liquid crystals are optimized, the emission efficiency of the cholesteric liquid crystal laser can be improved, and the liquid-crystal tunable laser has the quite-good temperature-tunable characteristics.

The invention discloses a method for preparing hybrid medium of a waveguide distributed feedback structure with fluctuant surface, which relates to the preparation of a waveguide distributed feedback dye-doped solid laser. The invention provides the method for preparing the hybrid medium of the waveguide distributed feedback structure with the fluctuant surface, which has the advantages of simple process, easy control, low cost, high efficiency and the like. The hybrid medium of the waveguide distributed feedback structure with the fluctuant surface is prepared by the following steps: producing a micro-pattern mother matrix with a one-dimensional or two-dimensional photonic crystal structure with the fluctuant surface; transferring a fluctuant micro-pattern on the surface of the mother matrix onto the surface of a curable polymer elastomer by utilizing a method of surface copying to obtain a soft seal with the micro-pattern; using sol-gel technology to obtain an organic-inorganic hybrid film; and stamping the soft seal with the micro-pattern on the surface of the organic-inorganic hybrid film, and performing the processes of preheat treatment, ultraviolet irradiation crosslinking, seal uncovering and postheat treatment.

The present invention discloses a phosphorescent organic electroluminescence device including a hole transport layer, a luminescent layer and an electron transport layer, which are successively laminated. The luminescent layer has a double-layer structure comprising a hole transport material layer and an electron transport material layer. The hole transport material layer is arranged between the hole transport layer and the electron transport material layer. The electron transport material layer is arranged between the hole transport material layer and the electron transport layer. An exciplex is formed on the interface of contact between the hole transport material layer and the electron transport material layer. The hole transport material layer includes a host material, the host material being a material having hole transport capability; and the electron transport material layer includes a host material and a phosphorescent dye doped in the host material, the host material being a material having electron transport capability.

A field emission device having improved properties and which finds use in display devices, such as a flat panel displays. Known devices and displays suffer from problems such as complexity of fabrication and limited color gamut. The present device provides a field emission backplate which is made from a substantially semiconductor based material and has a plurality of grown tips. The device also includes at least one electro-luminescent or photo-luminescent material having a fluorescent material such as a fluorescent dye doped material chemically attached thereto.