Abstract
In this paper, we investigate the luminescence of slow-decay phosphors under flickering excitation from an alternating current light-emitting diode (AC LED). A mathematical model was developed to predict the behavior of slow-decay phosphors. The model predictions were validated by experiment. Results showed that it is possible to achieve good quality white light with low flicker index from an AC LED with a slow-decay phosphor. A human factors study confirmed the potential of slow-decay phosphors to improve acceptability of the light output from AC LEDs. Based on this study, we propose a set of recommendations for slow-decay phosphor luminescence properties to create a white AC LED with minimal flicker.
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