A three-step method for the deposition of large cuboids of organic–inorganic perovskite and application in solar cells

Shahbazi, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1002/cphc.201600229
  3. Publisher: Wiley-VCH Verlag
  4. Abstract:
  5. A three-step method for the deposition of CH3NH3PbI3 perovskite films with a high crystalline structure and large cuboid overlayer morphology is reported. The method includes PbI2 deposition, which is followed by dipping into a solution of C4H9NH3I (BAI) and (BA)2PbI4 perovskite formation. In the final step, the poorly thermodynamically stable (BA)2PbI4 phase converts into the more stable CH3NH3PbI3 perovskite by dipping into a solution of CH3NH3I. The final product is characterized by XRD, SEM, UV/Vis, and photoluminescence analysis methods. The experimental results indicate that the prepared perovskite has cuboids with high crystallinity and large sizes (up to 1 μm), as confirmed by XRD and SEM data. Photovoltaic investigations show that the three-step method results in higher solar cell efficiency (15 % enhancement in efficiency) with a better reproducibility than the conventional two-step deposition method
  6. Keywords:
  7. Electrochemistry ; Perovskite phases ; Solar cells ; Synthesis design ; Thin films
  8. Source: ChemPhysChem ; 2016 , Pages 2389-2394 ; 14394235 (ISSN)
  9. URL: http://onlinelibrary.wiley.com/doi/10.1002/cphc.201600229/abstract