Optoelectronic devices with organometal perovskites with mixed anions

摘要

The present invention provides an optoelectronic device comprising a mixed-anion perovskite, wherein the mixed-anion perovskite comprises at least two selected from a halide anion and a chalcogenide anion. contain different anions. The present invention also provides a mixed halide perovskite of formula (I): [A][B][X] ₃ (I), wherein [A] is at least one organic is a cation; [B] is at least one divalent metal cation; [X] is the above two or more different halide anions. In another aspect, the present invention provides the use of a mixed anion perovskite as a sensitizer in an optoelectronic device, wherein the mixed anion perovskite comprises at least two different anions selected from a halide anion and a chalcogenide anion. includes The present invention also provides a photosensitizing material for an optoelectronic device comprising a mixed anion perovskite, wherein the mixed anion perovskite comprises at least two different anions selected from a halide anion and a chalcogenide anion. include