SnO -in-Polymer Matrix for High-Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability.

Clicks: 308
ID: 67160
2018
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Abstract
Understanding interfacial loss and the ways to improving interfacial property is critical to fabricate highly efficient and reproducible perovskite solar cells (PSCs). In SnO -based PSCs, nonradiative recombination sites at the SnO -perovskite interface lead to a large potential loss and performance variation in the resulting photovoltaic devices. Here, a novel SnO -in-polymer matrix (i.e., polyethylene glycol) is devised as the electron transporting layer to improve the film quality of the SnO electron transporting layer. The SnO -in-polymer matrix is fabricated through spin-coating a polymer-incorporated SnO colloidal ink. The polymer is uniformly dispersed in SnO colloidal ink and promotes the nanoparticle disaggregation in the ink. Owing to polymer incorporation, the compactness and wetting property of SnO layer is significantly ameliorated. Finally, photovoltaic devices based on Cs FA MA PbI Br perovskite sandwiched between SnO and Spiro-OMeTAD layer are fabricated. Compared with the averaging power conversion efficiency of 16.2% with 1.2% deviation for control devices, the optimized devices exhibit an improved averaging efficiency of 19.5% with 0.25% deviation. The conception of polymer incorporation in the electron transporting layer paves a way to further increase the performance of planar perovskite solar cells.
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wei2018snoadvanced Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wei, Jing;Guo, Fengwan;Wang, Xi;Xu, Kun;Lei, Ming;Liang, Yongqi;Zhao, Yicheng;Xu, Dongsheng;
Journal advanced materials (deerfield beach, fla)
Year 2018
DOI
10.1002/adma.201805153
URL
Keywords
stability reproducibility perovskite solar cells sno2-in-polymer matrix

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