Figure 3

(a) – (b) Absorption spectra of the OLED structures with 2D dual-periodic corrugated Ag/organic and Au/organic interfaces, respectively. (c) – (d)Angular dependent absorption spectra of the dual-periodic corrugated OLEDs from 0° to 20° under TM and TE polarized incident light source at different rotation axes, respectively. The insets in (c) and (d) show the orientation of rotation axis. The rotation axis is parallel to one of the grooves for the 2D corrugation of the nanostructure, respectively.