2results about How to "High emission intensity" patented technology

The application provides a terahertz emitter film structure based on a Ni / Cr / Ti metal heterostructure and an ion irradiation enhancement method thereof, a substrate material is glass, and a ferromagnetic layer of a Ni film, an intermediate functional layer of a Cr film and a protective layer of a Ti film are sequentially deposited on the surface of the substrate material. The ion irradiation enhancement method comprises the following steps: a ferromagnetic layer of a Ni film, an intermediate functional layer of a Cr film and a protective layer of a Ti film are sequentially deposited on the surface of the substrate material by adopting a magnetron sputtering deposition method, and an intermediate product on which the three metal film layers are deposited is subjected to ion irradiation. The beneficial effects are as follows: the Cr film layer is used to realize ultrafast current transients under femtosecond laser excitation and generate terahertz radiation. The metal film is subjected to ion irradiation treatment, and the terahertz emission intensity is significantly improved.

The invention discloses an antimonate near-infrared luminescent material and a preparation method thereof. The chemical expression of the luminescent material is YGd (Sc1-x-yGay) SbO7: xCr < 3 + >, in the formula, x is equal to 0.003-0.1, and y is equal to 0-0.97. The preparation method comprises the following steps: weighing the corresponding raw materials of yttrium oxide, gadolinium oxide, scandium oxide, gallium oxide, antimony oxide and chromium oxide according to the stoichiometric ratio of the chemical formula, then grinding and uniformly mixing the raw materials to obtain a mixture, putting the mixture into a crucible, sintering for 2-7 hours in a high-temperature furnace in an air atmosphere at 1100-1300 DEG C, and cooling to room temperature to obtain the yttrium oxide-gadolinium oxide-scandium oxide-gallium oxide-antimony oxide composite material. And cooling to room temperature to obtain the antimonate near-infrared luminescent material. The obtained antimonate near-infrared luminescent material emits near-infrared light under the excitation of a blue light chip, and the emission peak value is near 760 nm. The luminescent material is good in dispersity, uniform in granularity, good in chemical stability and high in luminous efficiency, an excitation band of the luminescent material covers purple and blue light regions, and the luminescent material can be used as a near-infrared luminescent material for a blue light LED.