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We used two-dimensional Finte-Difference-Time-Domain (FDTD) software to studythe transition behavior of nano-particles from scatterers to an opticallyuniform medium. We measured the transmission efficiency of the dipole source,which is located in the high refractive index medium(index=2.00) andencapsulated by low index resin(index=1.41). In an effort to composeindex-matched resin and to reduce internal reflection, high-indexnano-particles are added to low-index resin in simulations of various sizes anddensities. As the size of the nano-particles and the average spacing betweenparticles are reduced to 0.02 lambda and 0.07 lambda respectively, thetransmission efficiency improves two-fold compared to that withoutnanoparticles. The numerical results can be used to understand the opticalbehavior of nano-particles and to improve the extraction efficiency of highbrightness light-emitting-diodes(LEDs), through the use of nano-compositeencapsulant.Comment: 9 pages, 5 jpg figure

Numerical Analysis of High-Index Nano-Composite Encapsulant for Light-Emitting Diodes