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Materials for halide-based thin film solar cells
Organic–inorganic perovskite solar cells (PSCs) have recently emerged as high-performance and low-cost thin film solar cells and moved to the forefront of photovoltaics research. Fabrication of high-quality solution-processed perovskite thin films is one of the critical factors affecting performance of PSCs. In this study, the effect of several parameters consisting of antisolvent treatment, solvent evaporation rate, casting solvent, and chlorine incorporation was examined on the surface morphology and crystallinity of solution processed methylammonium lead iodide (CH3NH3PbI3) perovskite films. Solvent engineering has been performed in order to optimize morphology of the perovskite thin films. For this purpose, a mixture of gamma butyrolactone (GBL) and dimethylsulphoxide (DMSO) has been used to dissolve individual perovskite components followed by a toluene drop-casting step during thin film deposition. The structural, chemical and optical properties of CH3NH3PbI3 perovskite have been investigated using several microscopy and spectroscopy techniques. Thermal stability of the solution processed CH3NH3PbI3 film has been examined using X-ray photoelectron spectroscopy (XPS). Photovoltaic performance of pristine and chlorine-incorporated perovskite materials has been studied using an inverted-structure solar cell configuration. Despite the recent progress in fabricating hybrid organic–inorganic lead halide perovskite solar cells, their toxicity and low stability remain as major drawbacks, thereby hindering large-scale commercialization. Given the isoelectronic nature of lead(II) and bismuth(III) ions, potentially stable and nontoxic alternatives for efficient light absorption in thin-film photovoltaic (PV) devices may be found among bismuth-based halide semiconductors. However, high-quality polycrystalline films of many of these systems have not been demonstrated so far. In this work a versatile and facile two-step coevaporation approach has been utilized to fabricate A3Bi2I9 (A = Cs, Rb) and AgxBiyIx+3y (AgBi2I7, ...
Materials for halide-based thin film solar cells
Organic–inorganic perovskite solar cells (PSCs) have recently emerged as high-performance and low-cost thin film solar cells and moved to the forefront of photovoltaics research. Fabrication of high-quality solution-processed perovskite thin films is one of the critical factors affecting performance of PSCs. In this study, the effect of several parameters consisting of antisolvent treatment, solvent evaporation rate, casting solvent, and chlorine incorporation was examined on the surface morphology and crystallinity of solution processed methylammonium lead iodide (CH3NH3PbI3) perovskite films. Solvent engineering has been performed in order to optimize morphology of the perovskite thin films. For this purpose, a mixture of gamma butyrolactone (GBL) and dimethylsulphoxide (DMSO) has been used to dissolve individual perovskite components followed by a toluene drop-casting step during thin film deposition. The structural, chemical and optical properties of CH3NH3PbI3 perovskite have been investigated using several microscopy and spectroscopy techniques. Thermal stability of the solution processed CH3NH3PbI3 film has been examined using X-ray photoelectron spectroscopy (XPS). Photovoltaic performance of pristine and chlorine-incorporated perovskite materials has been studied using an inverted-structure solar cell configuration. Despite the recent progress in fabricating hybrid organic–inorganic lead halide perovskite solar cells, their toxicity and low stability remain as major drawbacks, thereby hindering large-scale commercialization. Given the isoelectronic nature of lead(II) and bismuth(III) ions, potentially stable and nontoxic alternatives for efficient light absorption in thin-film photovoltaic (PV) devices may be found among bismuth-based halide semiconductors. However, high-quality polycrystalline films of many of these systems have not been demonstrated so far. In this work a versatile and facile two-step coevaporation approach has been utilized to fabricate A3Bi2I9 (A = Cs, Rb) and AgxBiyIx+3y (AgBi2I7, ...
Materials for halide-based thin film solar cells
Khazaee, Maryam (author) / Lupascu, Doru C.
2019-04-02
Theses
Electronic Resource
English
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