| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Capellini, Giovanni
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Full Picture of Lattice Deformation in a Ge<sub>1 − x</sub>Sn<sub>x</sub> Micro‐Disk by 5D X‐ray Diffraction Microscopycitations
- 2024Selective Growth of GaP Crystals on CMOS-Compatible Si Nanotip Wafers by Gas Source Molecular Beam Epitaxycitations
- 2024High-quality CMOS compatible n-type SiGe parabolic quantum wells for intersubband photonics at 2.5–5 THzcitations
- 2024Full Picture of Lattice Deformation in a Ge 1-x Sn x Micro‐Disk by 5D X‐ray Diffraction Microscopycitations
- 2024Continuous-wave electrically pumped multi-quantum-well laser based on group-IV semiconductorscitations
- 2024Continuous-wave electrically pumped multi-quantum-well laser based on group-IV semiconductorscitations
- 2024High-quality CMOS compatible n-type SiGe parabolic quantum wells for intersubband photonics at 2.5–5 THzcitations
- 2024The Lattice Strain Distribution in GexSn1-x Micro-Disks Investigated at the Sub 100-nm Scale
- 2023Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators
- 2023Isothermal Heteroepitaxy of Ge1-xSnx Structures for Electronic and Photonic Applicationscitations
- 2023Isothermal Heteroepitaxy of Ge 1- x Sn x Structures for Electronic and Photonic Applicationscitations
- 2022Terahertz subwavelength sensing with bio-functionalized germanium fano-resonatorscitations
- 2022Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputteringcitations
- 2022Biocompatibility and antibacterial properties of TiCu(Ag) thin films produced by physical vapor deposition magnetron sputteringcitations
- 2018Advanced GeSn/SiGeSn Group IV Heterostructure Laserscitations
- 2018Advanced GeSn/SiGeSn Group IV Heterostructure Laserscitations
- 2018Morphological evolution of Ge/Si nano-strips driven by Rayleigh-like instabilitycitations
- 2018Antiphase boundaries in InGaP/SiGe/Si : structural and optical properties
- 2018Photoluminescence from GeSn nano-heterostructurescitations
- 2017Fully coherent Ge islands growth on Si nano-pillars by selective epitaxycitations
- 2017Strain relaxation in epitaxial GaAs/Si (0 0 1) nanostructurescitations
- 2017Structural and optical characterization of GaAs nano-crystals selectively grown on Si nano-tips by MOVPEcitations
- 2016Reduced-Pressure Chemical Vapor Deposition Growth of Isolated Ge Crystals and Suspended Layers on Micrometric Si Pillarscitations
- 2015Engineered coalescence by annealing 3D Ge microstructures into high-quality suspended layers on Sicitations
- 2015CMOS-compatible optical switching concept based on strain-induced refractive-index tuning
- 2007GeSi Intermixing in Ge Nanostructures on Si(111): An XAFS versus STM Studycitations
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article
High-quality CMOS compatible n-type SiGe parabolic quantum wells for intersubband photonics at 2.5–5 THz
Abstract
<jats:title>Abstract</jats:title><jats:p>A parabolic potential that confines charge carriers along the growth direction of quantum wells semiconductor systems is characterized by a single resonance frequency, associated to intersubband transitions. Motivated by fascinating quantum optics applications leveraging on this property, we use the technologically relevant SiGe material system to design, grow, and characterize n-type doped parabolic quantum wells realized by continuously grading Ge-rich Si<jats:sub>1−<jats:italic>x</jats:italic></jats:sub>Ge<jats:sub><jats:italic>x</jats:italic></jats:sub> alloys, deposited on silicon wafers. An extensive structural analysis highlights the capability of the ultra-high-vacuum chemical vapor deposition technique here used to precisely control the quadratic confining potential and the target doping profile. The absorption spectrum, measured by means of Fourier transform infrared spectroscopy, revealed a single peak with a full width at half maximum at low and room temperature of about 2 and 5 meV, respectively, associated to degenerate intersubband transitions. The energy of the absorption resonance scales with the inverse of the well width, covering the 2.5–5 THz spectral range, and is almost independent of temperature and doping, as predicted for a parabolic confining potential. On the basis of these results, we discuss the perspective observation of THz strong light–matter coupling in this silicon compatible material system, leveraging on intersubband transitions embedded in all-semiconductor microcavities.</jats:p>