Saemiconductors
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1. Confinamento de fónons ópticos em estruturas piezoelétricas periódicas e quasiperiódicas
We study the optical-phonon spectra in periodic and quasiperiodic (Fibonacci type) superlattices made up from III-V nitride materials (GaN and AlN) intercalated by a dielectric material (silica - SiO2). Due to the misalignments between the silica and the GaN, AlN layers that can lead to threading dislocation of densities as high as 1010 cm−1, and a sig
Publicado em: 2005