Inverted perovskite solar cell based on self-assembled bilayer achieves 26.08% efficiency

The proposed bilayer is used as a hole contact material that ensures an improved adhesive contact with the perovskite film. It consists of a phosphonic acid self-assembled monolayer with an upper layer made of an organic compound known as triphenylamine. Scientists at Xi'an Jiaotong University have fabricated an inverted perovskite solar cell that utilizes a self-assembled bilayer (SAB) as a hole-selective molecular contact. Inverted perovskite cells have a device structure known as "p-i-n", in which hole-selective contact p is at the bottom of intrinsic perovskite layer "i" with electron transport ...

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