论文信息 - Large Area Perovskite Solar Cell via Two-step Ultrasonic Spray Deposition

Large Area Perovskite Solar Cell via Two-step Ultrasonic Spray Deposition

We report a controllable two-step deposition method for fabricating perovskite solar cells. The perovskite light absorption layers were prepared by the reaction of spin-coated PbI<inf>2</inf> and spray-coated CH<inf>3</inf>NH<inf>3</inf>I. The CH<inf>3</inf>NH<inf>3</inf>I precursor solution is spray-coated under ambient atmosphere, which gives a better control of the perovskite morphology and a completed reaction. Using this mehtod, we achieve a PCE of 11.4% at a 0.04 cm<sup>2</sup> device area, and 8.8% at a 1.16cm<sup>2</sup> device area.

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