A light valve containing ABX.sub.3 perovskite particles (200) suspended in a liquid suspension (300) that can control light transmittance is provided. The preferable ABX.sub.3 perovskite particles (200) are halide ABX.sub.3 perovskite particles wherein A is at least one of Cs.sup.+, CH.sub.3NH.sub.3.sup.+, and Rb.sup.+, B is at least one of Pb.sup.2+, Ge.sup.2+, and Sn.sup.2+, and X is at least one of Cl.sup., Br.sup., and I.sup.. Use of the light valve in the manufacture of a light control device and a method of controlling light transmittance by using the light valve are also provided.

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.

A heat-insulating transparent PVC sheet is formed from a PVC substrate having a thickness of 0.02-2.0 mm and contains heat-insulation pastes evenly distributed over the PVC substrate, since the heat-insulation paste contains an essential component of wolfram cesium powder (WCs) with a chemical formula of Cs.sub.XN.sub.YWO.sub.3-ZCl.sub.C and having a particle size of 0.005-2 m, the heat-insulating transparent PVC sheet has an excellent weatherability, and particularly before and after tested in 300-hour service life in line with ASTM G-154 specification, has a physical property of weatherability decay rate (%) small than 4%.

Binary and ternary eutectic mixtures and corresponding electrolytes are disclosed. In some embodiments, binary eutectic mixtures and electrolytes each include a first salt, X1.sup.+Y1.sup., and a second salt, X2.sup.+Y2.sup., wherein each of X1.sup.+ and X2.sup.+ is an alkali metal cation and X1.sup.+ is different from X2.sup.+; and each of Y1.sup. and Y2.sup. is a sulfonimide anion and Y1.sup. is different from Y2.sup.. In ternary eutectic mixtures and electrolytes further include a third salt, X3.sup.+Y3.sup., wherein X3.sup.+ is different from each of X1.sup.+ and X2.sup.+. In some embodiments, the eutectic mixtures and electrolytes have melting points in a range of about 5 C. to about 70 C. Electrochemical devices containing such eutectic-mixture electrolytes are also disclosed.

The present invention provides a light valve containing ABX.sub.3 perovskite particles; more specifically is related to a light valve containing halide ABX.sub.3 perovskite particles that can control light transmittance. The preferable halide ABX.sub.3 perovskite particles in this invention consist of A being at least one of Cs.sup.+, CH3NH3.sup.+, and Rb.sup.+, B being at least one of Pb.sup.2+, Ge.sup.2+, and Sn.sup.2+, and X being at least one of Cl.sup., Br.sup., and I.sup.. This kind of halide ABX.sub.3 perovskite particles were suspended in a liquid suspension to make a light valve with a light transmittance control, which discloses a completely new application for ABX.sub.3 perovskite materials.

Disclosed is a method for preparing a perovskite nanoparticle using a fluidic channel including a first step of forming a fluidic channel including a first outer tube, a second outer tube, and a storage tube capable of introducing flows of fluids, a second step of inducing formation of the perovskite nanoparticles by continuously preparing a mixed fluid with a laminar flow based on a flow rate by introducing a flow of a base fluid into the first outer tube, and introducing a flow of a dispersion fluid in the same direction as the flow of the base fluid into the second outer tube, and a third step of separating the perovskite nanoparticles from the mixed fluid stored in the storage tube.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 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.

A heat-insulating transparent PVC sheet is formed from a PVC substrate having a thickness of 0.02-2.0 mm and contains heat-insulation pastes evenly distributed over the PVC substrate, since the heat-insulation paste contains an essential component of wolfram cesium powder (WCs) with a chemical formula of Cs.sub.XN.sub.YWO.sub.3-ZCl.sub.C and having a particle size of 0.005-2 m, the heat-insulating transparent PVC sheet has an excellent weatherability, and particularly before and after tested in 300-hour service life in line with ASTM G-154 specification, has a physical property of weatherability decay rate (%) small than 4%.

A transparent polyester film has low visible light transmittance of 5-50% by JIS K7705 testing standard and a high infrared-blocking rate of at least 90% by JIS R3106 testing standard, which is extruded from a kind of polyester resins obtained from 5-40 wt % of nanoparticle-based thermal insulation slurry and/or 0.005-0.1 wt % of nanoparticle-based black pigment slurry by weight of and to react with the polymerization materials to completely perform an esterification and a polycondensation, wherein the thermal insulation nanoparticle has a chemical formula of Cs.sub.XN.sub.YWO.sub.3-ZCl.sub.C with an average particle size of 10-90 nm and the nanoparticle-based black contains carbon black particles having a particle size of 20-80 nm.

The present application discloses a thermoelectric material, which contains CsAg.sub.5Te.sub.3 crystal material. At 700K, the thermoelectric material has an optimum dimensionless figure-of-merit ZT as high as 1.6 and a high stability, and the thermoelectric material can be recycled. The present application also discloses a method for preparing the CsAg.sub.5Te.sub.3 crystal material. The CsAg.sub.5Te.sub.3 crystal material is one-step synthesized by a high-temperature solid-state method, using a raw material containing Cs, Ag and Te, so that the high-purity product is obtained while the synthesis time is greatly shortened.