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US 2020/0279964 A1Published application
Multi-layered perovskites, devices, and methods of making the same
AssigneeAlliance for Sustainable Energy, LLC
InventorsKai ZHU, Yixin ZHAO, Mengjin YANG, Taiyang ZHANG
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Abstract
Methods are described that include contacting an alkyl ammonium metal halide film with an alkyl ammonium halide, where the alkyl ammonium metal halide film includes a first halogen and a metal, the alkyl ammonium halide includes a second halogen, such that the contacting forms an alkyl ammonium metal mixed-halide film that interfaces with the alkyl ammonium metal halide film, where the alkyl ammonium metal mixed-halide film includes the first halogen, the second halogen, and the metal.
Claims9
1-17. (canceled)
A device comprising, in order:
- an alkyl ammonium metal halide film comprising a first halogen;
- and
- an alkyl ammonium metal mixed-halide film comprising the first halogen and a second halogen, wherein:
- the alkyl ammonium metal halide film has a thickness of about 1 nanometer to about 1000 nanometers, and
- a thickness of the alkyl ammonium metal mixed-halide film is less than or equal to the thickness of the alkyl ammonium metal halide film.
2 more elements
Dependencies are inferred from the claim text.