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US 2022/0069236 A1Published application
2d organic-inorganic hybrid perovskites and uses thereof
AssigneeHuawei Technologies Canada Co., Ltd.
InventorsPeixi WANG, Amin Morteza NAJJARIAN, Sjoerd HOOGLAND, Edward Hartley SARGENT
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Abstract
Novel 2D organic-inorganic hybrid perovskites, including (4-CF3-PMA)2PbI4, that emit in the blue spectral region, and methods for making same. The CF3-substituted material exhibits a ˜0.16 eV larger bandgap than corresponding halogen-substituted materials. This family of materials offers a degree of freedom in tuning 2D perovskites to specific bandgaps for optoelectronic applications. These materials are highly stable, easily synthesized, and do not suffer from phase separation.
Claims21
A 2D organic-inorganic hybrid perovskite of Formula (I):
- (R—NH3)2MX4 (I)
- wherein:
- R is
- wherein R1 is CF3 or CF2CF3;
- m is 1 or 2;
- and
- n is 1 or 2;
- M is Pb, Sn or Ge;
- and
- X is I, Br or Cl.
7 more elements
Dependencies are inferred from the claim text.