Figure 6

EL spectra at different observation angles of the dual-periodic-corrugated OLED with different orientations of the rotation axis under TM polarization (a) and TE polarization (b).
The insets show the orientation of the rotation axis.

EL spectra at different observation angles of the dual-periodic-corrugated OLED with different orientations of the rotation axis under TM polarization (a) and TE polarization (b).
The insets show the orientation of the rotation axis.