Metal halide perovskites have merged as an attractive class of materials for photovoltaic applications due to their excellent optoelectronic properties. However, the long term stability is a roadblock for this class of material’s industrial pathway. Increasing evidence shows that intrinsic defects in perovskite promote material degradation. Consequently, understanding defect behaviours in perovskite materials is essential to further improve device stability and performance. This dissertation, hence, focuses on the topic of defect chemistry in halide perovskites. The first part of the dissertation gives a brief overview of the defect properties in halide perovskite. Subsequently, the second part shows that doping methylammonium lead iodide with a small amount of alkaline earth metals (Sr and Mg) creates a higher quality, less defective material resulted in high open circuit voltages in both n-i-p and p-i-n architecture. It has been found that the mechanism of doping has two distinct regimes in which a low doping concentration enables ...


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    Title :

    Defect chemistry in halide perovskites : material characterisation and device integration


    Contributors:
    Phung, Thi Thuy Nga (author) / Neher, Dieter (tutor) / Abate, Antonio (tutor) / Mora-Seró, Iván (tutor) / Universität Potsdam (degree granting institution)

    Publication date :

    2020


    Size :

    vi, 231 Seiten


    Remarks:

    Illustrationen, Diagramme


    Type of media :

    Theses


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    53.36 Energiedirektumwandler, elektrische Energiespeicher