| CPC H10K 30/50 (2023.02) [H10K 30/10 (2023.02); H10K 30/57 (2023.02); H10K 30/81 (2023.02); H10K 85/113 (2023.02); H10K 85/322 (2023.02); H10K 85/371 (2023.02); H10K 85/381 (2023.02); H10K 85/50 (2023.02); H10K 85/654 (2023.02); H10K 85/655 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02)] | 9 Claims |

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1. A planar heterojunction perovskite solar cell, comprising:
a first electrode;
a first transport layer disposed on said first electrode;
a perovskite material layer disposed on said first transport layer;
a second transport layer disposed on said perovskite material layer;
and a second electrode disposed on said second transport layer,
wherein one of said first or second transport layers is a hole transport layer and the other one of said first or second transport layers is an electron transport layer, and
wherein at least one of said hole transport layer or said electron transport layer comprises a single near infrared sensitive semiconductor material, wherein said single near infrared sensitive semiconductor material is
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