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Efficient and stable planar hole-transport-layer-free perovskite solar cells were fabricated using low temperature processed tin dioxide (SnO2, 180 °C) as electron-transport-material and carbon film (100 °C) as top electrode. Open circuit voltage of 1.03 ± 0.02 (highest at 1.07) V was obtained, which was 100 mV higher than that of reference devices using conventional high-temperature-processed mesoporous...
Modification by ultra-thin fullerene (C60) insertion layer of about 1 monolayer on the electronic structure and the film growth of 2,7-diocty[1]benzothieno-[3,2-b]benzothiophene (C8-BTBT) on silicon oxide (SiO2) is investigated using ultraviolet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and X-ray diffraction (XRD). It is found that the...
Structural evolution induced by cyclization reaction and heat-drawing of polyimide (PI) fibers containing the 2-(4-aminophenyl)-5-aminobenzimidazole moiety was studied by means of synchrotron radiation wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS). WAXD results indicate that the drawing process induces an increase in the crystallinity and crystal orientation of PI fibers,...
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