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A high refractive index (RI) and transparent encapsulant material is in great demand for light emitting diode (LED) packaging to lower the RI contrasts between a LED chip and an encapsulant, and therefore improve the light extraction efficiency. In this paper, we prepared TiO2/silicone nanocomposites and studied the effects of the crystalline phases of TiO2, and the TiO2 surface modifications on their...
Improving the light extraction efficiency is one of the key technologies for high brightness LED packaging, and is of great importance for the semiconductor illumination industry. Due to the large refractive index (RI) difference between LED chip and outside medium, the light will be trapped in the LED, convert into heat, and further lower the conversion efficiency. Encapsulants such as epoxy and...
For current LED packaging technology, one of the major limitations is the low light extraction efficiency, due to the refractive index (RI) difference between LED chip and air. Moreover, the trapped light in LED may convert into heat and further lower the conversion efficiency and reduction in the LED reliability. Encapsulants such as epoxy and silicone are usually added to reduce the RI contrast...
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