Abstract: 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 a solid phase residue and a halogen molecule, dissolving the halogen molecule in deionized water to form a halogen solution, rinsing the solid phase residue with deionized water to obtain a solid phase and a liquid phase, calcining the solid phase into a metal oxide, or mixing the solid phase with the halogen solution to obtain a first metal halide, subjecting the liquid phase to an extraction treatment to form an oil phase layer, followed by conducting a back-extraction treatment, adding the halogen solution, and conducting a vacuum concentration treatment to obtain a second metal halide.

Abstract: A method for recovering a resource from a CIGS thin-film solar cell to be recycled includes a) providing the CIGS thin-film solar cell, and b) subjecting the CIGS thin-film solar cell to a cooling treatment at a predetermined temperature, such that a light absorbing unit of the CIGS thin-film solar cell can be recovered due to thermal strain difference of materials of the CIGS thin-film solar cell.

Abstract: A method for recovering a resource from a CIGS thin-film solar cell to be recycled includes a) providing the CIGS thin-film solar cell, and b) subjecting the CIGS thin-film solar cell to a cooling treatment at a predetermined temperature, such that a light absorbing unit of the CIGS thin-film solar cell can be recovered due to thermal strain difference of materials of the CIGS thin-film solar cell.