Table 1 Concentration factor (CF)a and geometric extraction efficiency (ηext) at a current density (J) of 1.0 mA cm−2 vs. the apex angle (θapex)

From: An electrophosphorescent organic light emitting concentrator

θapex (°)

15.5

25.5

35.5

55.5

CF b

2.9±0.1

2.05±0.03

1.64±0.02

1.46±0.03

ηext (%)

38.9±1.3

45.5±0.7

50.1±0.6

68.1±1.5

  1. aCF is calculated based on the effective luminance from a single panel, assuming that all four panels have identical luminous characteristics.
  2. b Errors for CF and ηext are standard deviations from at least three single-panel concentrator devices.
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