Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
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...Lee et al. (12) have shown that efficient solar cells can be fabricated by replacing the TiO2 photoanode with an insulating Al2O3 scaffold, implying good electron-transport properties....
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...(12) have shown that efficient solar cells can be fabricated by replacing the TiO2 photoanode with an insulating Al2O3 scaffold – implying good electron transport properties....
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...Increasing the optical thickness of these layers through light trapping architectures compensates for this slight mismatch – accounting for the high photoconversion efficiencies reported in these systems (9-14, 40)....
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...Lee et al. (12) have shown that efficient solar cells can be fabricated by replacing the TiO2 photoanode with an insulating Al2O3 scaffold, implying good electron-transport properties....
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References
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...In contrast to the methylammonium trihalogen plumbates previously reported in solar cells (i.e., CH3NH3PbI3) (21, 22), this iodidechloride mixed-halide perovskite was remarkably stable to processing in air....
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...The extremely narrow diffraction peaks suggest that the films have long range crystalline domains (greater than 200 nm, peak width limited by instrument broadening) and are highly oriented with the a-axis (21, 26)....
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...S1) (25) showed diffraction peaks at 14.20°, 28.58°, and 43.27°, which we assigned as the (110), (220), and (330) planes, respectively, of a tetragonal perovskite structure with lattice parameters a = 8.825 Å, b = 8.835 Å, c = 11.24 Å, similar to the CH3NH3PbI3 previously reported (21)....
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..., CH3NH3PbI3) (21, 22), this iodide-chloride mixed-halide perovskite was remarkably stable to processing in air....
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...24 Å, similar to the CH3NH3PbI3 previously reported (21)....
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...Efforts have been made to reduce such losses in the DSC by moving from a multielectron iodide/tri-iodide redox couple to one-electron outer-sphere redox couples, such as a cobalt complexes or a solid-state hole-conductor (1, 4, 12, 13)....
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