ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,916, issued on July 1, was assigned to NATIONAL TSING HUA UNIVERSITY (Hsinchu, Taiwan).

"Method for recovering valuable material from perovskite solar cell" was invented by Fan-Wei Liu (Taichung, Taiwan), Yu-Lun Chueh (Hsinchu, Taiwan) and Wei-Sheng Chen (New Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for recovering a valuable material from a perovskite solar cell includes immersing a perovskite solar cell device in an organic solvent to dissolve a monovalent metal cation, a divalent metal cation, and two halogen anions in the organic solvent, followed by adding an oxidizing agent and conducting a heating treatment to form...