Figure 3 | Light: Science & Applications

Figure 3

From: An electrophosphorescent organic light emitting concentrator

Figure 3

(a) Geometric area ratio (G), extraction efficiency (ηext) and (b) CF vs. apex angle (θapex) at J=1.0 mA cm−2 for concentrators with θapex values of 15.5, 25.5, 35.5 and 55.5°. Note that CF increases monotonically as θapex decreases due to the increased number of reflections compared to concentrators with large θapex values. At the same time, ηext decreases due to increased propagation losses. CF, concentration factor.

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