Tang Yong, Li Zhi, Liang Guanwei, Li Zongtao, Li Jiasheng, Yu Binhai
Opt Express. 2018 Oct 15;26(21):27716-27725. doi: 10.1364/OE.26.027716.
Polyacrylonitrile electrospinning nanofiber film was introduced into a light emitting diode (LED) lamp to exploit the strong reflective and scattering effects. The light extraction mechanism was studied systematically for three different electrospinning types in three different types of LED lamps. For the all-electrospinning types, the luminous efficacy increased for the white LED, outwards remote phosphor layer, and inwards remote phosphor layer lamps by 10.98, 16.97, and 18.35%, respectively, compared with the reference lamp. Lamps with stronger backscatter had larger luminous efficacy enhancements. The reflector-electrospinning type helped redirect lights with large emission angles. The substrate-electrospinning type was beneficial for recycling the total interior reflection lights and increasing the yellow to blue ratio. Additionally, the all-electrospinning white LED lamps remains 97.89% luminous flux after a 96-hour aging process. Electrospinning fiber films are favorable luminous efficacy enhancers for the future generation of LED lamps.
将聚丙烯腈静电纺丝纳米纤维膜引入发光二极管（LED）灯中，以利用其强反射和散射效应。针对三种不同类型LED灯中的三种不同静电纺丝类型，系统研究了光提取机制。对于所有静电纺丝类型，与参考灯相比，白色LED灯、向外远程荧光粉层灯和向内远程荧光粉层灯的发光效率分别提高了10.98%、16.97%和18.35%。具有较强后向散射的灯具有更大的发光效率增强。反射器 - 静电纺丝类型有助于重定向大发射角的光。基板 - 静电纺丝类型有利于回收全内反射光并增加黄蓝比。此外，经过96小时老化过程后，全静电纺丝白色LED灯仍保留97.89%的光通量。静电纺丝纤维膜是下一代LED灯有利的发光效率增强剂。
