Abstract
In this paper, we present results of Fourier-transformed photoluminescence measurements of quaternary GaInAsSb quantum wells with quinary AlGaInAsSb barriers grown on GaSb substrate, designed for spectral range of mid-infrared. Here, we show an emission shift towards longer wavelength as a result of incorporation of indium into the quantum wells reaching up to 3 μm at room temperature (RT). Additionally, we have observed an additional low-energy photoluminescence signal with maximum wavelength of 3.5 μm at RT, which we have attributed as states localised on the layer interfaces. The activation energy of carriers trapped in those states is estimated to be 35 meV.
| Original language | English |
|---|---|
| Pages (from-to) | 274-278 |
| Number of pages | 5 |
| Journal | Optical Materials |
| Volume | 91 |
| DOIs | |
| Publication status | Published - 1 May 2019 |
| Publication type | A1 Journal article-refereed |
Keywords
- Fourier-transformed spectroscopy
- MBE
- Optical gas sensing
- Photoluminescence
- Superluminescent diodes
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Computer Science
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering