Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element including first luminescent crystals from the class of perovskite crystals, embedded a first polymer P1 and a second element comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element including first luminescent crystals from the class of perovskite crystals, embedded a first polymer P1 and a second element comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.

Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the solid electrolyte. The solid electrolyte comprises a lithium-containing transition metal sulfide being represented by the chemical formula of Li.sub.2−2a+bCd.sub.1+aM.sub.cGe.sub.1−dS.sub.4, where M is selected from the group consisting of Al, Ga, In, Si, Sn and a combination thereof, wherein 0<a≤0.25, 0≤b≤0.2, 0≤c≤0.2, and 0≤d≤0.2. The embodiments of the present application effectively improve the shortcomings of poor chemical stability of the conventional thiophosphate solid electrolyte in an atmospheric environment by providing the above solid electrolyte having a thio-LISICON structure and containing no phosphorus (P), so that the solid electrolyte has both good chemical stability and high ionic conductivity, thereby reducing the processing environment requirements and manufacturing cost of the solid electrolyte.

Disclosed are a solid ion conductor compound represented by Formula 1, and having an argyrodite-type crystal structure, a solid electrolyte and an electrochemical cell each comprising the same, and a method of preparing the same:

Li.sub.xP.sub.yM1.sub.vS.sub.zM2.sub.wM3.sub.w′  <Formula 1> where in the above formula, M1 is an element substituted at P sites and having a larger ionic radius than that of P, M2 and M3 are different elements selected from elements of Group 17 in the periodic table, and 4≤x≤8, 0<y<1, 0<v<1, 0<z<6, 0<w<3, 0≤w′<3, and y≥v.

One aspect of the present invention is a positive active material that contains an oxide containing lithium, a transition metal element and a typical element, and having an antifluorite crystal structure, in which the transition metal element is cobalt, iron, copper, manganese, nickel, chromium, or a combination thereof, the typical element is a group 13 element, a group 14 element, phosphorus, antimony, bismuth, tellurium or a combination thereof, and a molar ratio of a content of the typical element to a total content of the transition metal element and the typical element in the oxide is more than 0.05 and 0.5 or less.

One aspect of the present invention is a positive active material that contains an oxide containing lithium, a transition metal element and a typical element, and having an antifluorite crystal structure, in which the transition metal element is cobalt, iron, copper, manganese, nickel, chromium, or a combination thereof, the typical element is a group 13 element, a group 14 element, phosphorus, antimony, bismuth, tellurium or a combination thereof, and a molar ratio of a content of the typical element to a total content of the transition metal element and the typical element in the oxide is more than 0.05 and 0.5 or less.

The present invention relates to a method for preparing uniform metal oxide nanoparticles. According to the preparation method of the present invention, it is possible to maintain the temperature and pressure inside the reactor in a stable and constant manner by removing water generated in the reaction step for forming metal oxide nanoparticles. Thus, the uniformity of nanoparticles formed is increased, and the reproducibility between batches can be increased even in a repeated process and and a large-scale reaction. Therefore, the preparation method of the present invention can be used to synthesize uniform nanoparticles reproducibly in large quantities.

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 present invention relates to a compound represented by the general formula Li.sub.2+2xM.sub.1−xZS.sub.4, wherein 0.3≤x≤0.9; wherein M is one or more elements selected from the group consisting of Pb, Mg, Ca, Ge and Sn; and wherein Z is one or more elements selected from the group consisting of Ge, Si, Sn and Al. The present invention also relates to a method for preparing the material of the present invention, comprising the steps of: (a) providing a mixture of lithium sulfide Li.sub.2S, sulfides MS and ZS.sub.2, in a stoichiometric ratio ensuring Li.sub.2+2xM.sub.1−xZS.sub.4 to be obtained, wherein M, Z and x are as defined above; (b) pelletizing the mixture prepared in step (a); (c) heating at a maximum plateau temperature. In still another aspect, the present invention relates to a use of the compound of the present invention as a solid electrolyte, in particular in an all solid-state lithium battery.