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genhunter

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注册: 2013-07-22
专业: 肿瘤化学药物治疗

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超级老快: 金币+50, 翻译EPI+1, ★★★很有帮助 2016-08-16 20:45:10

事实证明,由荧光粉混合封装树脂得到的W-LEDs给整个照明领域带来了突飞猛进的发展。但是长期使用会由于芯片温度较高而导致荧光粉的性能劣化,同时,芯片散发的热量和短波福射,会导致封装树脂老化、变黄、透过率下降等,从而使得LED的光效降低,光色质量下降,寿命变短。因此, 发新型受热稳定、无光衰的优质光转换材料显得尤为突出和重要。
It has been demonstrated that W-LEDs, which is made of a mixture of fluorescent powders sealed with resin, have brought a dramatic advancement in the lighting industry. However, the performance of W-LEDs gradually goes down over time due to several facts, the relatively high temperature on chip causing flourescent powders to deteriorate, at the same time, the heat generated and short wavelength irradiation also cause aging, discoloration and less transparent to sealing resin, which leads to reduced light emitting efficiency, worsened quality of light emitted and shortened lifespan. Therefore research on the next generation of heat stable, light-emitting materials that do not readily decay over time is important and in timely need.

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