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As a new kind of semiconductor photoelectric device, Light-emitting diodes (LEDs) have begun to play an important role in many illumination applications due to their excellent performance in terms of high brightness, energy-saving and environment friendly. However, thermal management is one of the major issues to be improved for implementing LEDs into illumination applications because heat affects...
The degradation of high power white and blue light-emitting diodes (LEDs) was investigated by considering the electrical, optical and phosphor conversion. The LED samples were tested at the elevated temperature of 40°C with 700mA, 900mA, 1200mA. In order to research the degradation rule of fluorescent power in white LED, aging studies using white and blue LEDs with same batch of chips under same invariableness...
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