The goal of this research is to prepare inverted light-emitting devices with improved performance by combining titanium dioxide (TiO 2) nanorods and tungsten trioxide (WO 3) layer. TiO 2 nanorods with different lengths were established directly on the fluorine-doped tin oxide (FTO) substrates by the hydrothermal method. The prepared TiO 2 nanorods with lengths shorter than 200 nm possess transmittance higher than 80% in the visible range. Inverted light-emitting devices with the configuration of FTO/TiO 2 nanorods/ionic PF/MEH-PPV/PEDOT:PSS/WO 3 /Au were constructed. The best device based on 100-nm-height TiO 2 nanorods achieved a max brightness of 4493 cd/ m 2 and current efficiency of 0.66 cd/A, revealing much higher performance compared with those using TiO 2 compact layer or nanorods with longer lengths as electron-transporting layers.