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    Hydrogen Bonding and Stability of Hybrid Organic-Inorganic Perovskites

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    Type
    Article
    Authors
    El-Mellouhi, Fedwa cc
    Marzouk, Asma cc
    Bentria, El Tayeb cc
    Rashkeev, Sergey N. cc
    Kais, Sabre cc
    Alharbi, Fahhad H. cc
    Date
    2016-09-08
    Online Publication Date
    2016-09-08
    Print Publication Date
    2016-09-22
    Permanent link to this record
    http://hdl.handle.net/10754/623555
    
    Metadata
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    Abstract
    In the past few years, the efficiency of solar cells based on hybrid organic–inorganic perovskites has exceeded the level needed for commercialization. However, existing perovskites solar cells (PSCs) suffer from several intrinsic instabilities, which prevent them from reaching industrial maturity, and stabilizing PSCs has become a critically important problem. Here we propose to stabilize PSCs chemically by strengthening the interactions between the organic cation and inorganic anion of the perovskite framework. In particular, we show that replacing the methylammonium cation with alternative protonated cations allows an increase in the stability of the perovskite by forming strong hydrogen bonds with the halide anions. This interaction also provides opportunities for tuning the electronic states near the bandgap. These mechanisms should have a universal character in different hybrid organic–inorganic framework materials that are widely used.
    Citation
    El-Mellouhi F, Marzouk A, Bentria ET, Rashkeev SN, Kais S, et al. (2016) Hydrogen Bonding and Stability of Hybrid Organic-Inorganic Perovskites. ChemSusChem 9: 2648–2655. Available: http://dx.doi.org/10.1002/cssc.201600864.
    Sponsors
    We are extremely grateful for the Research Computing Center in Texas A&M University at Qatar and SHAHEEN Supercomputer at King Abdullah University of Science and Technology (KAUST), Saudi Arabia, where the calculations were conducted. This work is supported by the Qatar National Research Fund (QNRF) through the National Priorities Research Program (NPRP8-090-2-047).
    Publisher
    Wiley
    Journal
    ChemSusChem
    DOI
    10.1002/cssc.201600864
    ae974a485f413a2113503eed53cd6c53
    10.1002/cssc.201600864
    Scopus Count
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