Figure 3From: Fabrication and characterization of WO3/Ag/WO3 multilayer transparent anode with solution-processed WO3 for polymer light-emitting diodesComparison of WO 3 particles. (a) FESEM image of WO3 particles from conventional synthesis method. (b) TEM image of WO3 NPs less than 2 nm in size by the rapid conversion.Back to article page