CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume PC12991 > Article
Presentation
11 June 2024 Direct band-gap hexagonal Silicon-Germanium type-I quantum wells
R. Farina, V. T. van Lange, W. H. J. Peeters, Max C. van Hemert, M. M. Jansen, C. Wakelkamp, Erik P. A. M. Bakkers, Jos E. M. Haverkort
Author Affiliations +
Proceedings Volume PC12991, Nanophotonics X; PC1299114 (2024) https://doi.org/10.1117/12.3016717
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Hexagonal SiGe alloys offer a group IV direct bandgap for integrated photonics, addressing the limitations of traditional silicon-based electronics. We have synthesized coaxial nanowire shells comprising direct bandgap hex-Ge/SiGe and hex-SiGe/SiGe Quantum Wells (QWs) around a wurtzite GaAs core. Time-resolved photoluminescence measurements demonstrate a 1 nanosecond radiative lifetime, proving direct bandgap emission. Photoluminescence spectra show the QW emission in between the emission of the well and the barrier material, indicating type-I band alignment. Measurements as a function of QW thickness demonstrate clear quantum confinement with emission up to room temperature for thick QWs. By changing the QW-thickness and the well composition, the emission could be tuned between 2000-3400 nm. The experimentally observed direct bandgap SiGe QWs with type-I band alignment are expected to be pivotal for the development of novel low-dimensional devices based on hex-Ge and hex SiGe.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
R. Farina, V. T. van Lange, W. H. J. Peeters, Max C. van Hemert, M. M. Jansen, C. Wakelkamp, Erik P. A. M. Bakkers, and Jos E. M. Haverkort "Direct band-gap hexagonal Silicon-Germanium type-I quantum wells", Proc. SPIE PC12991, Nanophotonics X, PC1299114 (11 June 2024); https://doi.org/10.1117/12.3016717
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Quantum wells
Silicon
Alloys
Germanium
Photoluminescence
Quantum features
Quantum light sources
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top