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WebQuestion: The refractive indices of GaAs, GaN, and light-emitting polymers are 3.4, 2.5 and 1.5, respectively. What is the fraction of the output light power from the planar semiconductor GaAs, GaN and polymer LEDs? If the reflection at the polymer/air interface is neglected, what improvement can be attained if a planar GaAs LED is encapsulated in a … WebSep 12, 2024 · In polymer chemistry, the width of the distribution of molecular weights is described by the dispersity (Ð, also called, in older texts, the polydispersity or the … WebPolymers is a peer-reviewed, open access journal of polymer science published semimonthly online by MDPI. Belgian Polymer Group (BPG), European Colloid & Interface … korean armory compilationist