3 results about "Electron capture" patented technology

The application discloses a wound dressing and a preparation method and application thereof; the wound dressing comprises polymer flexible fibers and cobalt-iron layered double hydroxide nanosheets dispersed in the polymer flexible fibers; the cobalt-iron layered double hydroxide nanosheets contain a cobalt vacancy structure in a crystal lattice. The wound dressing has a strong "electron capture effect" due to the cobalt vacancy. The wound dressing can physically capture electrons on a respiratory transmission chain of a pathogenic bacterial cell membrane, interferes with transmembrane proton transfer and ATP synthesis, directly kills the bacteria through "metabolic starvation", and further has a broad-spectrum physical bactericidal function independent of antibiotics. The wound dressing has excellent superoxide dismutase-like and catalase-like activities, can long-acting capture and remove active oxygen such as superoxide anions and hydrogen peroxide in an inflammatory microenvironment of a wound, promotes macrophages to polarize to a M2 phenotype for promoting repair, and has anti-inflammatory and pro-angiogenic functions.

The application discloses a perovskite solar cell based on electronic interception stable surface passivation layer and a preparation method thereof, and belongs to the technical field of solar cells. The solar cell comprises a transparent conductive substrate, a hole transport layer, a perovskite layer, a surface passivation layer, an electron transport layer and an electrode which are arranged in a stack. The surface passivation layer is made of 3-carbamoyl-2,2,5,5-tetramethylpyrrolin-1-oxyl radical (CTPL) and phenethylammonium chloride. The application introduces CTPL into the phenethylammonium chloride passivation system, captures the photo-generated electrons on the perovskite surface, prevents the photo-generated electrons from generating superoxide radicals with oxygen, thereby inhibits the deprotonation process of the phenethylammonium salt passivation layer, and significantly improves the stability of the passivation layer. Meanwhile, the application avoids the carrier transport obstruction caused by the discontinuous electron capture or interface charge accumulation, maintains the continuity of the charge transport between the absorption layer and the transport layer and the interface matching, and keeps a high photoelectric conversion efficiency and photo-thermal stability in long-term operation.