نتایج جستجو برای: microphotoluminescence
تعداد نتایج: 54 فیلتر نتایج به سال:
Structural and optical properties of the InGaAlAs-based multiple quantum well sMQWd 1.3 mm laser structures produced on InP s001d substrates by metal organic vapor phase epitaxy sMOVPEd technique in the regime of selective area growth sSAGd have been studied. An x-ray beam of 10 mm diameter generated by a microbeam high-resolution x-ray diffraction sm-HRXRDd setup based on an imaging one-bounce...
We have successfully fabricated single-crystalline CdSe nanowires, nanobelts, and sheets by a chemical vapor deposition (CVD) method assisted with laser ablation. The synthesized CdSe nanostructures have hexagonal wurtzite phase as characterized by X-ray diffraction (XRD). CdSe nanobelts can range in length from several tens to a hundred micrometers, in thickness from 40 to 70 nm, and a tapered...
Localization–delocalization transitions occur in problems ranging from semiconductor-devicephysics to propagation of disease in plants and viruses on the internet. Here, we report calculations of localized electronic and vibrational eigenstates for remarkably different, mostly realistic, disordered systems and point out similar characteristics in the cases studied. We show in each case that the...
We have fabricated a series of thin (~50 nm) erbium-doped (by ion implantation) silicon-rich oxide films in the configuration that mitigates previously proposed mechanisms for loss of light emission capability of erbium ions. By combining the methods of optical, structural and electrical analysis, we identify the erbium ion clustering as a driving mechanism to low optical performance of this ma...
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