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A degradation mechanism analysis methodology is proposed for the mid-power white-light LED packages in this paper. Based on the degradation data obtained from a series of aging tests that are performed on the individual packaging material, the degradation kinetics of lumen output and spectral power distribution of the LED packages are investigated using optical simulation. As a result, although the...
In this paper, the degradation modes and degradation mechanisms of mid-power LEDs were presented. For this study, commercially available mid-power LED packages were aged by method of accelerated temperature and humidity stress test (HAST). During ageing test, the ambient temperature and relative humidity was hold at 105 C and 100 %RH separately, which is so-called 105 C/100 %RH. As a result, little...
In this paper, the degradation modes and degradation mechanisms of mid-power LEDs were presented. For this study, commercially available mid-power LED packages were aged by method of accelerated temperature and humidity stress test (HAST). During ageing test, the ambient temperature and relative humidity was hold at 105 C and 100 %RH separately, which is so-called 105 C/100 %RH. As a result, little...
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