Crystallization Dynamics of Organolead Halide Perovskite by Real-Time X-ray Diffraction

Tetsuhiko Miyadera, Yosei Shibata, Tomoyuki Koganezawa, Takurou N. Murakami, Takeshi Sugita, Nobutaka Tanigaki, Masayuki Chikamatsu

研究成果: Article査読

67 被引用数 (Scopus)

抄録

We analyzed the crystallization process of the CH3NH3PbI3 perovskite by observing real-time X-ray diffraction immediately after combining a PbI2 thin film with a CH3NH3I solution. A detailed analysis of the transformation kinetics demonstrated the fractal diffusion of the CH3NH3I solution into the PbI2 film. Moreover, the perovskite crystal was found to be initially oriented based on the PbI2 crystal orientation but to gradually transition to a random orientation. The fluctuating characteristics of the crystallization process of perovskites, such as fractal penetration and orientational transformation, should be controlled to allow the fabrication of high-quality perovskite crystals. The characteristic reaction dynamics observed in this study should assist in establishing reproducible fabrication processes for perovskite solar cells.

本文言語English
ページ(範囲)5630-5634
ページ数5
ジャーナルNano Letters
15
8
DOI
出版ステータスPublished - 2015 8 12
外部発表はい

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学
  • 機械工学

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