Fig. 7From: Solution-Processed Hybrid Light-Emitting Devices Comprising TiO2 Nanorods and WO3 Layers as Carrier-Transporting Layers a B-V, b E-J, and c EL spectra of inverted light-emitting devices based on TiO2 nanoparticles, nanorods with a height of 100–300 nm, and compact layer. d Snapshot of the device based on 100-nm-height TiO2 nanorods driven at 15 VBack to article page