2 results about "Free iodine" patented technology

This application discloses a polarizer and its preparation method, a display module, and a display device, relating to the field of display technology. The polarizer includes a polarizing layer in which perovskite quantum dots are dispersed. The perovskite quantum dots are generated by an in-situ reaction of a perovskite precursor, a ligand solvent, and free iodine ions from the polarizing layer. This application solves the technical problem that residual free iodine ions in the polarizer can easily lead to a decrease in the polarization degree of the polarizer.

This method produces water containing free iodine, which can be used to suppress slime and fouling, without the use of an oxidizing agent. [Solution] By irradiating water containing iodide, such as an aqueous potassium iodide solution (iodide-containing water), with ultrasonic waves using an ultrasonic transducer 31, free iodine is generated in the iodide-containing water.