Enhanced Crystallinity and Performance of CH3NH3PbI3 Thin Film Prepared by Controlling Hot CH3NH3I Solution Onto Evaporated PbI2 Nanocrystal

G.-X. Liang (1) , P. Fan (1) , D. Gu (1) , Z.-H. Zheng (1) , D.-P. Zhang (1) , J.-T. Luo (1) , X.-H. Zhang (2) , H.-L. Ma (2)

1 Shenzhen University
2 ISCR - Institut des Sciences Chimiques de Rennes

In this paper, a facile, efficient, and reduplicative modified two-step sequential method for the fabrication of CH3NH3PbI3 thin film was reported. First, a uniform, homogeneous, and small-sized PbI2 nanocrystal was deposited via vapor evaporation. Then, a hot CH3NH3I solution with a different temperature was spin coated onto the prepared PbI2 thin film to form perovskite thin films in a short time. The results demonstrated that homogeneous, compact, complete surface coverage, high crystallinity, and pinhole-free CH3NH3PbI3 thin film was prepared by CH3NH3I solution with 80 °C spin coating on the evaporated PbI2 nanocrystal. © 2016 IEEE.

Mots clés: Film preparation; Nanocrystals; Perovskite solar cells; Crystallinities; High crystallinity; Perovskite thin films; Sequential methods; Surface coverages; Thin films

Domaines: Chimie

G.-X. Liang, P. Fan, D. Gu, Z.-H. Zheng, D.-P. Zhang, et al.. Enhanced Crystallinity and Performance of CH3NH3PbI3 Thin Film Prepared by Controlling Hot CH3NH3I Solution Onto Evaporated PbI2 Nanocrystal. IEEE Journal of Photovoltaics, 2016, PP (6), pp.7570263. ⟨10.1109/JPHOTOV.2016.2604575⟩. ⟨hal-01398033⟩