To investigate the effect of nanoparticle/silicone composite films on the optical performances of double-layer encapsulated LEDs,nano ZrO2-doped composite films were prepared and applied in LED encapsulation.The experimental results revealed that appropriate doping concentration of nanoparticles and film thickness can enhance the luminous performance of double-layer encapsulated LEDs.Specifically,at the same doping layer thickness,a doping concentration of 4％yielded the best performance,with luminous efficacy increasing by 2.25％compared to single-layer encapsulated LEDs.Meanwhile,at the same doping concentration,a film thickness of 0.15 μm showed optimal performance,with luminous efficacy improving by 6.59％over single-layer encapsulated LEDs.Therefore,by adjusting the doping concentration of nanoparticles and the thickness of the composite film,the luminous performance of double-layer encapsulated LEDs can be effectively improved.
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