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Fabrication of perovskite solar cells based on vacuum-assisted linear meniscus printing of MAPbI3

Parvazian, E ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.solmat.2018.11.012
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. Scale-up deposition methods in perovskite solar cell research, are mostly used under humidity environment outside the glove-box. Also, the as-printed absorbing layer before the post-annealing process is always wet. Thus, controlling the morphology and crystallization of perovskite thin-films in up-scaled deposition systems is difficult and strongly investigated by the researchers. In this work, we introduce an anti-solvent-free meniscus printing method in which, the absorbing perovskite film with optimal performance is achieved. To this end, we check the printing parameters to get to the optimized film characteristics. Also, a vacuum chamber (<100 Pa) is used for 30 s to remove the solvent with appropriate pace from the as-printed wet perovskite films. Based on using vacuum process, instead of low surface coverage needle-like morphology, a pinhole-free dense film with appropriate grain-size (400–500 nm) and thickness (~480 nm) was obtained. The perovskite devices with optimized meniscus printed films with and without vacuum process show a PCE of 10.1% and 2.3% respectively (with active area of 0.1 cm2). Also, the conversion efficiency of 8.0% was achieved with an active area of 1 cm2. The result demonstrated the merit of using vacuum process before post-annealing step. © 2018 Elsevier B.V
  6. Keywords:
  7. Ambient condition ; Meniscus printing ; Perovskite solar cell ; Annealing ; Deposition ; Perovskite ; Solar cells ; Thin films ; Ambient conditions ; Deposition methods ; Deposition systems ; Film characteristics ; Morphology and crystallizations ; Optimal performance ; Perovskite thin films ; Vacuum process ; Perovskite solar cells
  8. Source: Solar Energy Materials and Solar Cells ; Volume 191 , 2019 , Pages 148-156 ; 09270248 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0927024818305361