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Thermally stable white LEDs

White light-emitting-diodes (WLEDs) perform well in many settings where solid-state light fittings with long lifetime, low power consumption, and high efficiency are required. However, high-power WLEDs suffer from high heat flux during operation. Improvements in chip structure and fabrication have solved the problem of heat degradation of chip materials, and now the challenge of high-power WLEDs is the reliability of their packaging

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