Abstract: Provided are perovskite quantum dots showing an independent photoreaction to light stimulation in different wavelength bands from each other, a method for preparing the perovskite quantum dots, and an anti-counterfeiting ink including the perovskite quantum dots.

Abstract: An electroluminescent layer according to the present invention comprises a core-shell particle comprising a perovskite crystal core and a shell of a dielectric polymer, wherein a charge transfer pathway to the perovskite crystal core is formed by dielectric breakdown of the dielectric polymer. The electroluminescent layer according to the present invention can prevent the deterioration of perovskite crystals due to external moisture, oxygen, or the like since the perovskite crystal core is enclosed and protected by the dielectric polymer and can have improved charge transfer and injection efficiencies since charges are directly transferred and injected to the perovskite crystals through the charge transfer pathway formed by dielectric breakdown of the dielectric polymer.

Abstract: A separator for a lithium secondary battery and a manufacturing method thereof are provided. The separator comprises a metal organic framework (MOF) layer formed by Langmuir-Blodgett method, and prevents shuttle phenomenon caused by polysulfide leaching from a positive electrode which includes a sulfur-containing material, and thereby improving cycle stability of a lithium secondary battery.

Abstract: A porous carbon structure, a method for preparing the same, and a battery comprising the same are provided. The porous carbon structure has a core-shell structure including a core and a shell, the core comprising a first metal organic framework (MOF), and the shell comprising a second MOF, and the first MOF and the second MOF have different component elements and pore structure from each other. The porous carbon structure, when applied as a sulfur carrier, prevents leaching of polysulfide generated at a positive electrode into an electrolyte solution, and thereby improving performance and lifetime characteristics of a battery using sulfur as a positive electrode active material.

Abstract: The present invention relates to a multi-response photosensitive nanocomposite film that may exhibit independent responses of bending and light emission by light stimuli with different wavelengths. The multi-response photosensitive nanocomposite film may induce independent optical bending and light emission when light stimuli with different wavelengths are applied, such that electrical stimulation and location detection may be independently and simultaneously performed in vivo.