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    Sequential Dip-spin Coating Method: Fully Infiltration of MAPbI 3-x Cl x into Mesoporous TiO 2 for Stable Hybrid Perovskite Solar Cells

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    Type
    Article
    Authors
    Kim, Woochul
    Park, Jiyoon
    Kim, Hyeonghun
    Pak, Yusin
    Lee, Heon
    Jung, Gun Young
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2017-05-31
    Online Publication Date
    2017-05-31
    Print Publication Date
    2017-08
    Permanent link to this record
    http://hdl.handle.net/10754/624045
    
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    Abstract
    Organic-inorganic hybrid perovskite solar cells (PSCs) have reached a power conversion efficiency of 22.1% in a short period (∼7 years), which has been obtainable in silicon-based solar cells for decades. The high power conversion efficiency and simple fabrication process render perovskite solar cells as potential future power generators, after overcoming the lack of long-term stability, for which the deposition of void-free and pore-filled perovskite films on mesoporous TiO2 layers is the key pursuit. In this research, we developed a sequential dip-spin coating method in which the perovskite solution can easily infiltrate the pores within the TiO2 nanoparticulate layer, and the resultant film has large crystalline grains without voids between them. As a result, a higher short circuit current is achieved owing to the large interfacial area of TiO2/perovskite, along with enhanced power conversion efficiency, compared to the conventional spin coating method. The as-made pore-filled and void-free perovskite film avoids intrinsic moisture and air and can effectively protect the diffusion of degradation factors into the perovskite film, which is advantageous for the long-term stability of PSCs.
    Citation
    Kim W, Park J, Kim H, Pak Y, Lee H, et al. (2017) Sequential Dip-spin Coating Method: Fully Infiltration of MAPbI 3-x Cl x into Mesoporous TiO 2 for Stable Hybrid Perovskite Solar Cells. Electrochimica Acta. Available: http://dx.doi.org/10.1016/j.electacta.2017.05.184.
    Sponsors
    This work was supported by the Pioneer Research Center Program (NRF-2016M3C1A3908893) and by the Basic Science Research Program (NRF-2016R1A2B4006395) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education. The research was partially supported by the GIST Research Institute (GRI) project through a grant provided by GIST in 2017.
    Publisher
    Elsevier BV
    Journal
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2017.05.184
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0013468617312185
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.electacta.2017.05.184
    Scopus Count
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    Articles; Physical Science and Engineering (PSE) Division

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