On the Color Stability of Phosphor-Converted White LEDs Under DC, PWM, and Bilevel Drive

Most commercial white LEDs are made from nitride-based blue LEDs coated with yttrium aluminium garnet phosphor, which produce spectra that shift in opposite directions under the influences of drive current and junction temperature changes. This property gives rise to different emitted spectra, hence...

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Veröffentlicht in:	IEEE transactions on power electronics 2012-02, Vol.27 (2), p.974-984
Hauptverfasser:	Loo, K. H., Lai, Y. M., Tan, S. C., Tse, C. K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Applied sciences Color Design. Technologies. Operation analysis. Testing Driving method Electric currents Electrical engineering. Electrical power engineering Electrical machines Electronics Exact sciences and technology Heat sinks Integrated circuits Junctions LED LED color Light emitting diodes Optoelectronic devices phosphor-converted (pc) LED Phosphors Regulation and control Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Temperature Temperature measurement white LED
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