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Mendeley readers
| Title |
Interface Intermixing in Type II InAs/GaInAsSb Quantum Wells Designed for Active Regions of Mid-Infrared-Emitting Interband Cascade Lasers
|
|---|---|
| Published in |
Discover Nano, December 2015
|
| DOI | 10.1186/s11671-015-1183-x |
| Pubmed ID | |
| Authors |
Marcin Motyka, Grzegorz Sęk, Krzysztof Ryczko, Mateusz Dyksik, Robert Weih, Gilles Patriarche, Jan Misiewicz, Martin Kamp, Sven Höfling |
| Abstract |
The effect of interface intermixing in W-design GaSb/AlSb/InAs/Ga0.665In0.335AsxSb1 - x/InAs/AlSb/GaSb quantum wells (QWs) has been investigated by means of optical spectroscopy supported by structural data and by band structure calculations. The fundamental optical transition has been detected at room temperature through photoluminescence and photoreflectance measurements and appeared to be blueshifted with increasing As content of the GaInAsSb layer, in contrast to the energy-gap-driven shifts calculated for an ideally rectangular QW profile. The arsenic incorporation into the hole-confining layer affects the material and optical structure also altering the InAs/GaInAsSb interfaces and their degree of intermixing. Based on the analysis of cross-sectional transmission electron microscopy images and energy-dispersive X-ray spectroscopy, we could deduce the composition distribution across the QW layers and hence simulate more realistic confinement potential profiles. For such smoothed interfaces that indicate As-enhanced intermixing, the energy level calculations have been able to reproduce the experimentally obtained trend. |
Mendeley readers
The data shown below were compiled from readership statistics for 16 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 16 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 7 | 44% |
| Student > Master | 4 | 25% |
| Lecturer | 1 | 6% |
| Researcher | 1 | 6% |
| Professor > Associate Professor | 1 | 6% |
| Other | 0 | 0% |
| Unknown | 2 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 11 | 69% |
| Engineering | 2 | 13% |
| Materials Science | 1 | 6% |
| Unknown | 2 | 13% |