TiO2 nanorod arrays modified with SnO2-Sb2O3 nanoparticles and application in perovskite solar cell

摘要: Abstract Compared with the poor electron conducting ability of rutile TiO 2 , materials such as SnO -Sb O 3 composite have excellent mobility. Here, we report synthesis nanorod arrays grown on FTO substrate through a mild one-pot hydrothermal method. were then modified by spin coating technology. The morphology and structure examined field emission scanning microscopy (FESEM) X-ray powder diffraction (XRD). EIS measurement shows that transfer resistance electrons is greatly reduced, while UV–Vis diffuses reflectance spectra corresponding optical bandgaps measured Tauc plots indicate energy gap remains unchanged. Time-limited photocurrent response IPCE both show solar cell using improved photoelectric response. optimized has higher density fill factor, which leads to 7.7% conversion efficiency 19% increase when compared unmodified arrays.