Disclosed are a red light and near-infrared light-emitting material and a preparation method thereof, and a light-emitting device including the light-emitting material. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, aSc.sub.2O.sub.3.Ga.sub.2O.sub.3.bR.sub.2O.sub.3, wherein the element R includes one or two of Cr, Ni, Fe, Yb, Nd or Er; 0.001≤a≤0.6; and 0.001≤b≤0.1. The light-emitting material can be excited by a spectrum having a wide wavelength range (ultraviolet light or purple light or blue light) to emit light with a wide spectrum of 650 nm to 1700 nm or multiple spectra, thus having higher light-emitting intensity.

Gallium-68 generators that are capable of producing gallium-68 from a germanium-68 source material are disclosed. The source material may be a matrix material (e.g., zeolite) in which germanium-68 is isomorphously substituted for central atoms in tetrahedra within the matrix material. Methods for forming gallium-68 generators are also disclosed.

Gallium-68 generators that are capable of producing gallium-68 from a germanium-68 source material are disclosed. The source material may be a matrix material (e.g., zeolite) in which germanium-68 is isomorphously substituted for central atoms in tetrahedra within the matrix material. Methods for forming gallium-68 generators are also disclosed.

The gallate solution is obtained from an alkaline gallium-containing solution. Gallium is sorbed from a recycled solution on a divinylbenzene polymer-based ionite, gallium is desorbed with a solution of sulfuric acid to obtain a gallium-containing eluate, followed by concentration of gallium by converting it to a solid phase by neutralisation of the eluate with a caustic solution with precipitation of a gallium hydroxide precipitate at a given temperature. Thickening and filtration of the precipitate are carried out with its further dissolution in a caustic solution until a given concentration of gallium in the solution is obtained. The method allows to increase the concentration of gallium by converting it to the solid phase when neutralising acidic eluates with an alkaline solution, which simplifies the concentration process and reduces the number of technological operations and, as a result, reduces the cost of gallium production.

An ink including at least one colloidal dispersion of particles and at least one metal halide binder, wherein the binder is a dissociated salt of metal and halogen. Also, a method for preparing a light-sensitive material, a light-sensitive material obtainable by the method, and a device including at least one light-sensitive material obtainable by the method.

An ink including at least one colloidal dispersion of particles and at least one metal halide binder, wherein the binder is a dissociated salt of metal and halogen. Also, a method for preparing a light-sensitive material, a light-sensitive material obtainable by the method, and a device including at least one light-sensitive material obtainable by the method.

A method for producing a product including an oxide film of a second metal that is doped with a first metal includes generating a mist from a raw material solution in which both the first metal and the second metal are dissolved, and supplying the mist to a surface of a substrate to form the oxide film on the surface of the substrate. A pH of the raw material solution is less than 7.

A method for producing a product including an oxide film of a second metal that is doped with a first metal includes generating a mist from a raw material solution in which both the first metal and the second metal are dissolved, and supplying the mist to a surface of a substrate to form the oxide film on the surface of the substrate. A pH of the raw material solution is less than 7.

A method for recovering a resource from a CIGS thin-film solar cell to be recycled includes a) providing the CIGS thin-film solar cell, and b) subjecting the CIGS thin-film solar cell to a cooling treatment at a predetermined temperature, such that a light absorbing unit of the CIGS thin-film solar cell can be recovered due to thermal strain difference of materials of the CIGS thin-film solar cell.

A method for recovering a resource from a CIGS thin-film solar cell to be recycled includes a) providing the CIGS thin-film solar cell, and b) subjecting the CIGS thin-film solar cell to a cooling treatment at a predetermined temperature, such that a light absorbing unit of the CIGS thin-film solar cell can be recovered due to thermal strain difference of materials of the CIGS thin-film solar cell.