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Optimization of colour mixing in white‐light sources based on light‐emitting diodes (LEDs) only and those utilizing partial light conversion by a yellow YAG:Ce3+ phosphor is carried out by simulations. The trade‐off between the colour rendering index (CRI) and efficacy of the white‐light sources is examined, accounting for the efficiency of electricity‐to‐light conversion in state‐of‐the‐art LEDs...
The paper reviews the basic aspects of sublimation growth of wide-bandgap semiconductors such as SiC and group-III nitrides. The most significant physical and chemical phenomena underlying the growth are considered: heat and mass transport, sublimation and condensation, heterogeneous chemical reactions, flow through reacting porous medium, thermoelastic stress, and defect generation. State of the...
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