Table 2 Simulateda extraction efficiency, average intensity-weighted reflections and exit angles (ηext,x, and , respectively) of the exiting rays for two values for PHOLED reflectance (RPHOLED) vs. the relative position of the emission (x) from the apex

From: An electrophosphorescent organic light emitting concentrator

Position x RPHOLED (%) 0 0.1 0.2 0.8 0.9 1.0
η ext, x 66 14.2% 15.7% 17.7% 43.0% 53.8% 69.3%
71 18.7% 20.3% 22.5% 47.6% 57.4% 71.1%
66 3.63 3.44 3.20 1.33 0.84 0.31
71 3.92 3.71 3.44 1.45 0.94 0.37
66 1.2° 0.6° 0.5° 29.4° 39.1° 51.2°
71 1.1° 0.6° 0.5° 29.7° 39.3° 51.0°
  1. a Concentrator height is assumed to be unity and the device reflectance is assumed to be invariant to the incident angle.