Journal
JOURNAL OF LUMINESCENCE
Volume 167, Issue -, Pages 21-26Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2015.05.064
Keywords
AC LED; Slow-decay phosphor; Luminescence; Flicker
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Funding
- Federal Aviation Administration [13G009-2013]
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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. (C) 2015 Elsevier B.V. All rights reserved.
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