Table. 1. Table 1

Comparisons of outcoupling efficiencies (OCEs) of (a) a basic OLED, (b) OLED+cone, (c) OLED+parabola, and (d) OLED+R-parabola structures.

	OLED	OLED+cone	OLED+parabola	OLED+R-parabola
OCE (%)	22.55	24.37	24.31	24.62
OCE_Improvement (%)		8.1	7.8	9.2

New Phys.: Sae Mulli 2022;72:688~697 https://doi.org/10.3938/NPSM.72.688

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