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Efficient Perovskite Solar Cell Modules with High Stability Enabled by Iodide Diffusion Barriers
摘要： Operational stability is crucial for the success in large-scale application of metal halide perovskites devices. The diffusion of volatile iodide component of perovskites can induce irreversible device degradation. Here, low-dimensional diffusion barriers were introduced to increase the operational stability of high-efficiency large-area PSC modules. A negligible decay was observed after 1,000 h under severe test condition for a 15% high-efficiency solar module.
关键词： Operational stability,Iodide diffusion,Large-area modules,Perovskite solar cells,Diffusion barriers
更新于2025-09-19 17:13:59
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Temperature-dependent interface stability of MoO <sub/>3</sub> /GaAs(001) hybrid structures
摘要： We report on the influence of growth temperature and post-growth annealing on interface formation and film structure of thin MoO3 films on GaAs(001), which plays an important role for a future application as carrier-selective contacts or diffusion barriers in III/V-semiconductor spin- and opto-electronics or photovoltaics. Growth and post-growth annealing were performed in a manner that emulates heterostructure growth and lithographic processing. High-resolution transmission electron microscopy reveals nanocrystalline (“amorphous”) growth at temperatures up to 200 °C and a transition to polycrystalline growth at about 400 °C. Spatially resolved chemical analysis by energy dispersive x-ray spectroscopy reveals strong intermixing at the MoO3/GaAs(001) interface proceeding during both film deposition and annealing. Our results evidence the important role of intermixing occurring during the process of interface formation at the very beginning of deposition.
关键词： intermixing,temperature-dependent,interface stability,GaAs(001),diffusion barriers,MoO3,carrier-selective contacts
更新于2025-09-10 09:29:36