Fig. 3 | Nature Communications

Fig. 3

From: Investigating underlying mechanism in spectral narrowing phenomenon induced by microcavity in organic light emitting diodes

Fig. 3

Electroluminescence (EL) in cavity-free and cavity-based OLEDs. a The device structure of cavity-free F8BT OLED. b Broad EL spectrum for cavity-free OLED. c Negligible magneto-EL at different injection currents for broad EL in cavity-free OLED. d Narrow EL spectra for cavity-based OLEDs with different Q-factors. e Magneto-EL for cavity-based OLEDs with different Q-factors at constant injection current (20 mA cm−2)

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