<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Investigation of Stability and Reproducibility of Perovskite Solar Cells"^^ . "Last decade has witnessed a remarkable increase in the efficiency of photovoltaic devices based on lead halide perovskite materials. However, the stability and reproducibility of perovskite solar cells remain two of the biggest challenges impeding their application as the next generation of low-cost and efficient photovoltaics. This thesis aims to investigating these two issues in three parts. First, we reveal the important role of microstructure in the degradation processes of methylammonium lead triiodide perovskite films in controlled oxygen atmospheres under continuous illumination. CH3NH3PbI3 films with small, irregular grains and high defect density degrade much faster and more severely than films with large uniform grains and better electronic properties. The second part of this thesis demonstrates that the presence of large-scale chemical compositional and electronic inhomogeneities in CH3NH3PbI3 films is a common issue, and suggests one way to mitigate this problem by improving the fabrication process to obtain a perovskite layer with a uniform surface composition and electronic properties. The last section aims to improve the reproducibility of triple cation perovskite (Cs0.05(MA0.17FA0.83)0.95Pb(I0.9Br0.1)3) devices by optimizing the antisolvent treatment procedure. Scanning electron microscopy and photovoltaic measurements elucidate the relationship between antisolvent type and dripping speed on perovskite film formation and device performance."^^ . "2019" . . . . . . . "Qing"^^ . "Sun"^^ . "Qing Sun"^^ . . . . . . "Investigation of Stability and Reproducibility of Perovskite Solar Cells (PDF)"^^ . . . "Dissertation_QingSun.pdf"^^ . . . "Investigation of Stability and Reproducibility of Perovskite Solar Cells (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #27597 \n\nInvestigation of Stability and Reproducibility of Perovskite Solar Cells\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .