[7a-A501-1~11] 12.5 Organic solar cells

[7a-A501-9] Organic-inorganic hybrid lead halide crystallization by rapid interfacial microwave heating for high efficinecy perovskite solar cells

〇Masato Maitani¹, Vijay S. Murugesan¹, Daikichi Iso², Junbeom Kim^2,3, Shuntaro Tsubaki², Tsutomu Miyasaka⁴, Yuji Wada², Hiroshi Segawa¹ (1.Univ. Tokyo, 2.Tokyo Tech., 3.Seoul Univ., 4.Toin Univ., Yokohama)

Keywords:organic-inorganic hybrid, perovskite, microwave

We herein propose the microwave (MW) irradiation applied to the annealing process of the organic-inorganic hybrid lead halide perovskite crystalline semiconductor films for converting the intermediate state of as-coated precursor films into perovskite poly-crystalline films. The resulted perovskite films irradiated by microwave exhibited significantly larger crystal domains than those annealed on a conventional hotplate (HP), even within a shorter process time. The films are applied to the perovskite solar cell and exhibited higher efficiency with films irradiated by microwave, the opto-electric properties and crystallinity are examined to discuss the origin of the higher performance of devices prepared under microwave irradiation.