[21a-PA2-1~28] 12.1 Fabrications and Structure Controls

[21a-PA2-8] In situ X-ray observation of lead iodide perovskite films prepared by a gas blowing method

〇Yoshihiko Nishihara^1,2, Tetsuhiko Miyadera², Tomoyuki Koganezawa³, Masayuki Chikamatsu¹, Yuji Yoshida^1,2 (1.Tsukuba Univ., 2.AIST, 3.JASRI)

Keywords:perovskite solar cells

The lead iodide perovskite solar cells have an energy conversion efficiency about 22%, and the bottleneck for practical use is the stability, and the large area fabrication process. A gas blowing method has attracted attention as a industrial production method of perovskite layer. However, its necessary to elucidate the formation mechanism. In this study, we introduced an in situ observation system including synchrotron based grazing incident X-ray diffraction for the film formation process by gas blowing method, and compared with a nitrogen drying process.