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    Single-Crystal Halide Perovskites for High Efficiency Photovoltaics

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    Abdullah Alsalloum - Thesis - Final Draft.pdf
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    Abdullah Alsalloum - Thesis - Final Draft
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    Type
    Thesis
    Authors
    Alsalloum, Abdullah Yousef cc
    Advisors
    Bakr, Osman cc
    Committee members
    Alshareef, Husam N. cc
    Mohammed, Omar F. cc
    Program
    Material Science and Engineering
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2019-07-27
    Permanent link to this record
    http://hdl.handle.net/10754/656579
    
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    Abstract
    Lead halide perovskite solar cells (PSCs) are considered the fastest growing photovoltaic technology, reaching an outstanding certified power conversion efficiency of 24.2% in just 10 years. The best performing PSCs are based on polycrystalline films, where the presence of grain boundaries and ultra-fast crystallization limit the further development of their performance by increasing the bulk and surface defects. Compared to their polycrystalline counterparts, single crystals of lead halide perovskites have been shown to possess much lower trap-state densities and diffusion lengths exceeding 100𝜇m. In this thesis, using a solution space-limited inverse temperature crystallization method, twenty-microns thick single crystals of MAPbI3 are grown directly on the charge selective contact to construct highly reproducible p-i-n inverted type solar cells with fill factors(FF) as high as 84.3% and power conversion efficiencies (PCEs) exceeding 21% under 1 sun illumination (AM 1.5G). A key requisite for high PCEs is avoiding surface hydration, in which moisture attacks the perovskite/transporting layer interface and causes a significant decrease in short-circuit current. These solar cells set a record for single crystal PSCs, and highlight the potential of single crystal PSCs in furthering perovskite photovoltaic technology.
    Citation
    Alsalloum, A. Y. (2019). Single-Crystal Halide Perovskites for High Efficiency Photovoltaics. KAUST Research Repository. https://doi.org/10.25781/KAUST-837U8
    DOI
    10.25781/KAUST-837U8
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-837U8
    Scopus Count
    Collections
    Theses; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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