8results about How to "Good refractive index" patented technology

The present application provides a compound used as a coating agent for providing a particle having excellent dispersibility and refractive index, a particle having a surface coated with the compound, a production method thereof, and a dispersion composition containing the particle. The compound according to the present application has a structure represented by Formula (1). In the formula, R 1 represents an organic group having 1 to 30 carbon atoms, R 2 represents OR 3 or a group represented by Formula (2), R 3 represents an organic group having 1 to 30 carbon atoms, n1 and n2 represent an integer of 0 or more, n1 + 2 x n2 represents a valence number determined by the kind of L, L represents aluminum, gallium, yttrium, titanium, zirconium, hafnium, bismuth, tin, vanadium, or tantalum, * represents a bonding site, and R 4 and R 5 represent an organic group having 1 to 30 carbon atoms which can have an oxygen atom. The particle according to the present application has a structure represented by Formula (1) on the surface.

A kind of coating method based on waveband adaptive wide spectrum film layer thickness monitoring, to improve the coating quality and efficiency of optical thin film, by layer by layer design optical thin film structure, and using film system design software to calculate transmittance spectrum, to evaluate the influence of thickness change on optical performance;In the coating process, waveband adaptive monitoring technology is used, according to the characteristics of each layer of film and the performance of coating machine, to adaptively select high sensitivity monitoring wavelength, to realize accurate monitoring of film layer thickness in wide spectral range.The present application calculates the influence of current film thickness deviation on current film transmittance for layer by layer design of optical thin film, obtains the sensitivity of transmittance spectrum to film thickness deviation layer by layer, sets the sensitivity threshold, selects high sensitivity wavelength as monitoring wavelength, to improve the signal-to-noise ratio of suppression monitoring, to improve the deposition accuracy of film layer thickness.

The invention discloses a monomeric compound, a polymer and an optical lens, and relates to the technical field of optical materials, the structural formula of the monomeric compound is as shown in formula (I), in the formula, A is hydrogen or methyl; r1 comprises at least one of hydrogen, fluorine, chlorine, bromine, iodine, a cyano group, a nitro group, a phenyl group, a C1-C6 alkyl group, a C1-C6 alkoxy group, a C1-C6 alkyl substituted phenyl group and a C1-C6 alkoxy substituted phenyl group; n = 1, 2, 3, 4 or 5; b comprises a C1-C6 alkyl group, a C1-C6 alkoxy group or does not exist; d comprises a conjugated cyclic group or a substituted conjugated cyclic group. The novel monomeric compound provided by the invention can be used for preparing a polymer with high refractive index, and the polymer has good light transmission and mechanical properties at the same time.

The invention provides a carbazole compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. The compound provided by the invention has good thermal stability and refractive index, can reduce the loss of light reflected by a nearby electrode during luminescence when being used as a covering layer material, and effectively improves the stability of a film layer, thereby improving the luminous efficiency of a device and prolonging the service life of the device. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

The present application provides a compound for a cover layer represented by the following Chemical Formula 1 and an organic light emitting element comprising the same: <Chemical Formula 1>

The invention provides a heterocyclic compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. When the compound is used as a light-emitting layer main body material in the organic light-emitting device, the mobility of electrons and holes can be improved, the recombination efficiency of the electrons and the holes can be improved, and meanwhile, the energy loss can be limited, so that the photoelectric property of the organic light-emitting device is improved. The compound provided by the invention has good thermal stability and refractive index when being used as a covering layer material, can reduce the loss of light reflected by a nearby electrode during luminescence, effectively improves the stability of a film layer, and improves the performance of a device. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

The invention relates to the technical field of solar cells, in particular to a silicon heterojunction cell composite gradient passivation film and a preparation method thereof.The preparation method comprises the following steps that when an intrinsic amorphous silicon layer is prepared, only silane is introduced, then hydrogen is introduced while the flow of the silane is kept unchanged, and the intrinsic amorphous silicon layer is prepared by taking 2-4 seconds as one stage; the hydrogen / silane gas volume ratio in each stage is 1.25-2 times of the hydrogen / silane gas volume ratio in the previous stage, and the total time of introducing the hydrogen to prepare the intrinsic amorphous silicon layer is 60-120 seconds. Due to the introduction of the composite film layer with the hydrogen / silane ratio continuously changed, parameters such as the overall band gap, the refractive index and the extinction coefficient of the passive film layer are obviously improved, and more photons can reach PN junctions. The photoelectric conversion efficiency of the cell is obviously improved, and the stability is obviously improved.

The invention provides an arylamine compound and an organic electroluminescent device thereof, and particularly relates to the technical field of organic photoelectric materials. The compound provided by the invention has good thermal stability, has good refractive index when being used as a covering layer material, and can significantly improve the light extraction efficiency of a device, improve the luminous efficiency of the device and prolong the service life of the device. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.