Cathodoluminescence hyperspectral imaging of trench-like defects in InGaN/GaN quantum well structures

High-resolution cathodoluminescence hyperspectral imaging of nitride nanostructures.

Hyperspectral cathodoluminescence imaging provides spectrally and spatially resolved information on luminescent materials within a single dataset. Pushing the technique toward its ultimate nanoscale spatial limit, while at the same time spectrally dispersing the collected light before detection, increases the challenge of generating low-noise images. This article describes aspects of the instru...

Cathodoluminescence Hyperspectral Imaging of Nitride Semiconductors: Introducing New Variables

Cathodoluminescence (CL) hyperspectral imaging—the acquisition of a full optical emission spectrum at each pixel of an image—has become firmly established as a measurement mode in scanning electron microscopy (SEM) [1]. CL is sensitive to the structural, compositional and electrical properties of a sample, and the inherent multimode nature of SEM makes it possible to combine CL with other techn...

Quantum well intermixing in GaInNAs/GaAs structures

Exciton condensate in semiconductor quantum well structures.

We propose that the exciton condensate may form in a well-controlled way in appropriately arranged semiconductor quantum well structures. The mean-field theory of Keldysh and Kopaev, exact in both the high density and the low density limits, is solved numerically to illustrate our proposal. The electron-hole pairing gap and the excitation spectrum of the exciton condensate are obtained. The ene...

circuit modeling of quantum well heterostructure biopolar phototransistor مدل سازی مداری qw-hbpt

چکیده ندارد.