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US 12,735,597 B2Granted
Perovskite ink for scalable fabrication of efficient and stable perovskite modules
AssigneeThe University of North Carolina at Chapel Hill
InventorsJinsong Huang, Yehao Deng
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Abstract
Described herein are non-stoichiometric perovskite ink solutions, comprising: a first composition of formula FA1-xCsxBX3; a second composition of CsX, FAX, REX3, or REX2; and one or more solvents; wherein x, X, RE, and B are as defined herein. Methods for preparing polycrystalline perovskite films using the non-stoichiometric ink solutions and the use of the films in large-size solar modules are additionally described.
Claims17
A polycrystalline film comprising:
- a) a first composition of formula FA1-xCsxBX3;
- wherein,
- FA is formamidinium;
- x is between 0 and 1;
- and
- B is at least one metal cation;
- and
- b) a second composition of CsX, FAX, REX3, or REX2;
- wherein,
- RE is a rare earth ion;
- and
- X, in each instance, is at least one halide.
9 more elements
Dependencies are inferred from the claim text.