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66results about How to "Good anti-reflection performance" patented technology

Positive/negative (P/N) heterojunction based silicon/titanium dioxide three-dimensional composite material with synergic anti-reflection performance and application thereof

The invention relates to a positive/negative (P/N) heterojunction based silicon/titanium dioxide three-dimensional composite material with synergic anti-reflection performance. The silicon/titanium three-dimensional composite material is prepared according to the following method of (1) firstly, carrying out anisotropic etching on a silicon wafer with an alkali liquid, and forming a closely-arranged square conical shape on the surface of the silicon wafer; (2) secondly, carrying out hydrophilic treatment on the silicon wafer etched in the step (1), growing titanium dioxide crystal seed on the surface of the silicon wafer, and placing the silicon wafer in a muffle for calcination; and (3), finally, placing the silicon wafer with the titanium dioxide crystal seed on the surface, obtained in the step (2), in a reaction kettle, and obtaining the silicon/titanium dioxide three-dimensional composite material by adopting a hydrothermal method. The composite material disclosed by the invention is compatible with capabilities of excellent reflection elimination and high-efficiency photo-induced charge separation, and can be applied to the fields such as photocatalysis, a photoelectric conversion device and a solar cell.
Owner:JIANGNAN UNIV

Paint for transparent film and transparent film coated substrate

InactiveCN101225263AGood strengthGood anti-reflection and anti-glare propertiesCoatingsOptical elementsSolventSurface finishing
The invention provides a paint for transparent film and transparent film coated substrate formed by once coating the paint for transparent film and drying, with good sealing property, intension, antireflection and antidazzle performance, producibility and economical efficiency. The paint for transparent film comprises: particles of low refractive index with different affinity to the substrate forming component and particles of high refractive index, substrate forming component, polymerization initiator and solvent, characterized in that the particles of low refractive index and particles of high refractive index are subjected to surface treatment by silane coupler, therefore the refractive index (nA) of the particles of low refractive index (A) is at the range of 1.20-1.45, and the mean diameter is at the range of 5-200nm, the surface charge amount (QA) is at the range of 5-80ueq/g and the refractive index (nB) of the particles of high refractive index (B) is higher than the nA, and the mean diameter is at the range of 0.5-5um, the surface charge amount (QB) is at the range of 25-100ueq/g and the concentration of the particles of low refractive index is at the range of 0.1-10 weight% calculated in solid component and the concentration of the particles of high refractive index is at the range of 0.1-10 weight% calculated in solid component and the concentration of the substrate forming component is at the range of 1-30 weight% calculated in solid component.
Owner:JGC CATALYSTS & CHEM LTD

Anti-reflecting heterojunction composite coating and preparation method thereof

The invention relates to the technical field of photoelectric materials, in particular to an anti-reflecting heterojunction composite coating and a preparation method thereof. Firstly, the anisotropy of alkali liquor is used for etching monocrystalline silicon, and a conical structure in micron size is obtained; then, by a soft template printing technology, the silicon cone structure is transferred to the surface of a rigid base, wherein the surface of the rigid base is attached to a transition metal oxide, and a conical transition metal oxide is obtained; finally, by an in-situ oxide method, conductive macromolecule nano particles grow on the surface of the conical transition metal oxide, and a transition metal oxide and conductive macromolecule composite coating using the rigid base as a carrier is formed. The composite coating has the micro-nano multistage structure, so that excellent anti-reflecting performance is realized; meanwhile, a p-n heterojunction is formed at a transition metal oxide and conductive macromolecule assembly boundary surface; the efficient photogenerated charge separation capability is given to the composite coating; the photoelectric converting efficiency is improved. The composite coating effectively utilizes incident light, and has high application prospects as a photoelectric material.
Owner:JIANGNAN UNIV

Si-TiO2-PANI (silicon-titanium dioxide-polyaniline) composite material assembled based on ternary hierarchy and application thereof

The invention relates to a Si-TiO2-PANI (silicon-titanium dioxide-polyaniline) composite material assembled based on a ternary hierarchy. The composite material is prepared according to the following steps of (1) performing hydrophilic treatment on a silicon wafer, growing TiO2 seed crystal on the surface of the silicon wafer, putting the silicon wafer into a muffle furnace, and roasting the silicon wafer in the muffle furnace for a certain time; (2) putting the silicon wafer which is obtained in the step (1) in a reaction kettle, wherein the TiO2 seed crystal is adhered to the surface of the silicon wafer, and growing a TiO2 nano-rod on the surface of the silicon wafer in an inducing manner by utilization of a hydro-thermal synthesis method; (3) depositing conductive polyaniline nanoparticles on the TiO2 nano-rod obtained in the step (2) so as to obtain the Si-TiO2-PANI composite material assembled based on the ternary hierarchy. The Si-TiO2-PANI composite material assembled based on the ternary hierarchy disclosed by the invention has the advantages of excellent capabilities of lowering light reflection on a material surface and effectively separating photo-generated charges, and can be applied to photoelectric conversion devices, solar cells and photocatalytic organic dyestuff degradation.
Owner:JIANGNAN UNIV

High-transparency anti-reflective environmental-protection type PVC green film and preparation method thereof

The invention relates to a high-transparency anti-reflective environmental-protection type polyvinyl chloride (PVC) green film and a preparation method thereof, and belongs to the technical field of chemical product preparation. The environmental-protection type PVC green film particularly comprises the components in parts by weight: 90-92 parts of PVC, 1-1.5 parts of a processing aid, 2-2.5 parts of a reinforcing agent, 1-1.5 parts of a stabilizer, 0.3-0.4 part of a lubricant, 3.5-8 parts of a plasticizer, and 0.1-0.2 part of a modifying agent. The preparation method comprises the steps of throwing a PVC resin powder into a powder-making machine, starting up the machine, heating to make the temperature rise, throwing auxiliary materials in the machine, carrying out high speed stirring, again continuing to heat up to 120 DEG C and finishing high speed mixing, putting into a cold mixing pot, forcing to cool, barreling and sealing at the temperature of 40 DEG C, standing for 48 hours, and naturally cooling to obtain a finished powder; throwing the finished powder into a film-making machine, shaping by a cooling wind ring, blowing up a film bubble, carrying out traction of the film bubble, then introducing into a shaping water tank, and rolling up; and smearing the film with a hydrophilic gel, and covering with a self-adhesive paper and pressing tightly. The environmental-protection type PVC green film prepared by the method has the advantages of high transparency, good anti-reflective performance, energy saving and environmental protection, and the surface can be smoothly and clearly written by a water-based pen.
Owner:胡志新

Antireflective double layer P/N heterojunction graded composite material with monocrystalline silicon as carrier, and application thereof

The invention relates to an antireflective double layer P/N heterojunction graded composite material with monocrystalline silicon as a carrier. A preparation method of the composite material comprises the following steps: 1, carrying out hydrophilic treatment on a silicon chip, growing titanium dioxide seeds on the growth of the hydrophilically treated silicon chip, and calcining the obtained silicon chip in a muffle furnace; 2, placing the silicon chip with the surface attached with the titanium dioxide seeds, obtained in step 1, in a reaction kettle, and inducing growth of titanium dioxide nano-rods on the surface of the silicon chip through a hydrothermal synthesis technology; and 3, depositing the titanium dioxide nano-rods on polypyrrole nano-particles obtained in step 2 to obtain the antireflective double layer P/N heterojunction graded composite material with monocrystalline silicon as a carrier. The antireflective double layer P/N heterojunction graded composite material with monocrystalline silicon as a carrier has excellent material surface light reflection reduction and efficient photo-induced charge separation ability, and can be applied in the fields of photocatalysis, photoelectric conversion devices and solar batteries.
Owner:JIANGNAN UNIV
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