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We reported the systematical study of optical anisotropy of AlxGa1-xN epitaxial films grown on sapphire using FTIR measurements. The experimental data can be theoretically fitted by employing a four-phase layered model. Several specific absorption dips were observed when the aluminum composition is larger than 24%. The dip intensity increases with the aluminum compositions. According to the reciprocal...
We observe the enhancement of photoluminescence excitation through the coupling of an InGaN/GaN quantum well (QW) with surface plasmons which are generated on an Ag nanostructure deposited on the SiN-coated QW epitaxial sample.
We demonstrated nanostructured semipolar III-nitride light emitters on low cost c-plane GaN templates using one-step epitaxy. The total light emission efficiency is improved by a factor of 2.6 compared to polar emitters at room temperature.
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