Implementation of phosphor sedimentation to reduce thermal instability issue affecting white LED luminescence

Purpose In general, lighting application, white light emitting diode (LED) usually exposed to an extreme operating temperature of above 90°C. It is well-known that luminous efficacy and spectral characteristic of white LED are dependent on the temperature, causing thermal effects on luminous efficac...

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Veröffentlicht in:	Microelectronics international 2020-01, Vol.37 (1), p.1-9
Hauptverfasser:	Peng, Hui Yuen, Yam, Fong Kwong
Format:	Artikel
Sprache:	eng
Schlagworte:	Centrifuges Computational fluid dynamics Efficiency Electrostatic discharges Heat conductivity High temperature Hypotheses Light emitting diodes Luminescence Luminous efficacy Luminous intensity Operating temperature Optical properties Phosphors Sedimentation Sedimentation & deposition Sediments Semiconductors Silicones Simulation Stability analysis Substrates Temperature Temperature dependence Temperature distribution Temperature effects Thermal conductivity Thermal instability Thermal simulation Thermal stability White light Wire
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