Organo-metal halide perovskites films and methods of making the same

Patent · Tue Feb 02 04:00:00 EST 2021

OSTI ID:1805478

Zhu, Kai; Yang, Mengjin; Zhou, Yuanyuan; Padture, Nitin Prabhakar

An aspect of the present disclosure is a method that includes applying a solution that includes a first solvent, a halogen-containing precursor, and a metal halide to a substrate to form a coating of the solution on the substrate, contacting the coating with a second solvent to form a first plurality of organo-metal halide perovskite crystals on the substrate, and thermally treating the first plurality of organo-metal halide perovskite crystals, such that at least a portion of the first plurality of organo-metal halide perovskite crystals is converted to a second plurality of organo-metal halide perovskite crystals on the substrate. The halogen-containing precursor and the metal halide are present in the solution at a molar ratio of the halogen-containing precursor to the metal halide between about 1.01:1.0 and about 2.0:1.0, and a property of the second plurality of organo-metal halide perovskite crystals is improved relative to a property of the first plurality of organo-metal halide perovskite crystals.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC36-08GO28308
• Assignee: Alliance for Sustainable Energy, LLC (Golden, CO)
• Patent Number(s): 10,910,569
• Application Number: 15/574,611
• OSTI ID: 1805478
• Country of Publication: United States
• Language: English